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The Tokyo Gas Group's Approach to Environmental Action Environmental Protection Guideline Targets and Results Results of Efforts in FY2015 Continual Improvement of Environmental Management System Measures Taken against Environmental Risks Efforts to Prevent Global Warming Reduction of CO Emissions at Customers' Sites Energy Conservation and Reduction of CO Emissions in Business Activities Forest Preservation and Greenification Activities Toward the Creation of ResourceSaving Society Tackling Waste Emissions from Production Facilities and Construction Work Action in the Gas Supply Field Action on Waste at Offices Tackling Waste Emissions at Customers' Sites Activities to Conserve Biodiversity Action along Our Value Chains Nagano Tokyo Gas Forest and Other Measures 2 2

Tackling Waste Emissions from Production Nagano Tokyo Gas … · 2018-12-04 · Energy Conservation and Reduction of ... Material Balance Environmental Performance Data (1) Usage

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Page 1: Tackling Waste Emissions from Production Nagano Tokyo Gas … · 2018-12-04 · Energy Conservation and Reduction of ... Material Balance Environmental Performance Data (1) Usage

The Tokyo Gas Group's Approach to

Environmental Action

Environmental Protection Guideline

Targets and Results

Results of Efforts in FY2015

Continual Improvement of Environmental

Management System

Measures Taken against Environmental

Risks

Efforts to Prevent Global Warming

Reduction of CO  Emissions at Customers'

Sites

Energy Conservation and Reduction of

CO  Emissions in Business Activities

Forest Preservation and Greenification

Activities

Toward the Creation of Resource­Saving

Society

Tackling Waste Emissions from Production

Facilities and Construction Work

Action in the Gas Supply Field

Action on Waste at Offices

Tackling Waste Emissions at Customers'

Sites

Activities to Conserve Biodiversity

Action along Our Value Chains

Nagano Tokyo Gas Forest and Other

Measures

2

2

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Tokyo Gas Group Business Activities and

Material Balance

Environmental Performance Data (1)

Usage of Energy & Water / Emissions into

the Atmosphere & Water Systems

Environmental Performance Data (2)

Waste

Environmental Accounting

Development and Implementation of Local

Global Warming Action Plans

City Gas CO  Emission Factors

Assessment of CO  Emission Reduction

due to Reduction of Purchased Electricity

About Third Party Assurance

2

2

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Tokyo Gas Group has established an "Environmental Philosophy" and "Environmental Policies" based on

its  Management  Philosophy  and  Corporate  Action  Philosophy.  The  entire  group  is  working  actively  to

protect  regional  and  global  environments  in  line with  the mid­  to  long­term  environmental  action  targets

detailed in its Environmental Protection Guidelines. In fiscal 2015, designated part of the "step" stage of our

Challenge 2020 Vision, the Environmental Policies and Environmental Protection Guidelines were revised

to assist implementation of our main policies. Biodiversity conservation and compliance with environmental

legislation are nothing new to us, but we will need  to understand society's expectations even better  than

before  and  translate  them  into  further  improvements  if  we  are  to  successfully  evolve  as  a  total  energy

business and drive forward with our globalization. In fiscal 2016, therefore, we added two new items to our

Environmental Policies, namely "5. Biodiversity conservation and sustainable use" and "6. Compliance with

environmental law and fulfillment of social responsibilities." We will be taking group­wide action to put these

policies into effect.

The Tokyo Gas Group will promote more sustainable ways of energy use to contribute to the protection of

regional and global environments as well as to the sustainable development of society.

1. Reduction of the Environmental Impact of Customers' Energy Use Tokyo Gas will actively and continuously attempt to reduce the environmental impact of customers'

energy use by promoting the use of environmentally friendly energy (natural gas) and providing highly

efficient appliances and systems.

2. Reduction of the Total Environmental Impact of Tokyo Gas's BusinessOperations Tokyo Gas will continuously reduce energy intensity and resources used in its business operations

through the implementation of efficient and effective environmental management to contribute to the

realization of a sustainable society. At the same time, we will reduce our business operations' overall

environmental impact by aggressively promoting "green purchasing" and the 3R initiatives (Reduce,

Reuse, and Recycle).

3. Strengthening of Environmental Partnerships with the Local and InternationalCommunities Tokyo Gas will strengthen its environmental partnerships with both the local and international

communities by engaging in a wide variety of programs, such as participation in local environmental

events and technology transfers to developing countries.

4. Promotion of Green Technology R&D Programs Tokyo Gas will promote R&D programs for environmental technologies, including renewable energy,

to protect regional and global environments.

Environmental Philosophy

Environmental Policies

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5. Biodiversity Conservation and Sustainable Use Tokyo Gas will recognize the benefits of nature, and will monitor and mitigate the impact of our

business activity on biodiversity, promote sustainable use of resources, and conserve biodiversity in

partnership with local communities in order to ensure the continued enjoyment of those benefits in the

future.

6. Compliance with Environmental Law and Fulfillment of Social Responsibilities Tokyo Gas will comply with environmental laws, ordinances, agreements, and other relevant

standards and regulations, and all employees will practice social responsibility in accordance with

global standards.

Environmental Protection Guidelines

Tokyo Gas  formulated  its Environmental Protection Guidelines  in  fiscal  2000  to establish mid­ and  long­

term  targets  for  environmental  activities  in  line  with  its  Environmental  Philosophy  and  Environmental

Policies. In fiscal 2005, the scope of these guidelines was expanded to include subsidiaries and affiliates in

pursuit  of  environmental  action  in  three  core  areas:  global  warming  countermeasures,  promotion  of

resource saving, and promotion of green purchasing. In fiscal 2009, three additional core areas were added

with  the  aim  of  creating  a  low  carbon,  resource­saving  society  that  coexists  with  nature:  promotion  of

biodiversity  conservation,  promotion  of  environmental  communication,  and  promotion  of  environmental

technology development. The guidelines have been revised to reflect changes made to other policies and

guidelines in order to assist the realization of the Challenge 2020 Vision, and we are making a group­wide

effort to put them into practice.

Overview Image of Environmental Protection Guidelines

<Link>Environmental Advantages of Natural Gas

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Tokyo Gas Group has established and is working to achieve guideline targets in six fields in order to

contribute to the realization of a low carbon society, the creation of a resource-saving society, and the

development of a society that coexists with nature in line with its Environmental Policies. In fiscal 2015,

we reported on our targets and performance in accordance with the Environmental Protection Guidelines

(2014-2020) revised in fiscal 2014 (fiscal 2012 in the case of the Guidelines for Global Warming

Countermeasures). In fiscal 2016, the guidelines were partially revised, with, for example, the Guidelines

for Global Warming Countermeasures which cover our electric power business being revised to take into

account our entry into the electricity retail market. Regarding the revised Environmental Protection

Guidelines (2016-2020), please see the pdf file below.

Environmental Protection Guidelines (FY2015 Numerical Targets and Results)

Category Environmental ProtectionGuidelines (2014-2020)

FY2015 numerical

targets

FY2015 results

FY2016 numerical

targets

Global warmingcountermeasures

Customers'sites

We aim to reduce COemissions at customers'sites by 8 million tons byfiscal 2020. This will beachieved through ourGroup efforts implementedsince fiscal 2011 topromote the use of naturalgas and to develop anddisseminate gas equipmentand systems that havehigher efficiency and lowerenvironmental load.✽1

Reduce COemissions by 3.40million tons

Reduced COemissions by 3.43million tons

Reduce COemissions by 3.70million tons

Electricpowerbusiness

We aim to achieve a COemission factor of 0.35 kg -CO /kWh by fiscal 2020 forour electric powerbusiness.✽2

CO emissionfactor 0.36

CO emissionfactor 0.357

- SeeEnvironmentalProtectionGuidelines(2016-2020).

Businessactivities

(1) We aim to meet anenergy usage intensitytarget (consumption ofprimary energy per gasproduction unit) of 250GJ/million m at our LNGterminals by fiscal 2020.

Energyusageintensity of 220GJ/millionm

Energyusageintensity of 201GJ/millionm

Energyusageintensity of 215GJ/millionm

(2) We aim to meet a heatsales intensity target(consumption of primaryenergy per heat sales unit)

Heat sales intensity

Heat sales intensity

Heat sales intensity

Environmental Protection Guidelines (FY2015 Numerical Targets andResults)

2

2 2 2

2

2

2 2

3 3 3 3

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of 1.19 GJ/GJ at districtheating and cooling centersby fiscal 2020.

1.33GJ/GJ 1.34GJ/GJ 1.33GJ/GJ

(3) We aim to meet anenergy usage reductiontarget (primary energyusage) of 910TJ at ouroffices, etc. by fiscal 2020.

Energyusage 915TJ

Energyusage 887TJ

Energyusage 915TJ

Promotingthewidespreaduse ofrenewableenergy

We are working tocontribute to the realizationof a low carbon societythrough efforts to maximizethe implementation ofrenewable energy. Suchefforts include providingproducts and services thatutilize renewable energy,supplying renewableenergy (including powergeneration businesses),and promoting bothnetworked use of energyand energy usage in certainaspects.

- - -

Promotion ofresource saving

Industrialwaste

(1) Production plants withinour Group will maintainzero emissions (defined asa final disposal rate of lessthan 0.1%) until fiscal 2020through the reduction,reuse, and recycling ofindustrial waste. ✽3, 4

Finaldisposal rate less than0.1%

Finaldisposal rate 1.3%

Finaldisposal rate less than0.1%

(2) We will maintain therecycling rate ofconstruction wasteproduced from businessactivities by our Groupcompanies at 98% or aboveuntil fiscal 2020.

Recyclingrate 98% or above

Recyclingrate 96%

Recyclingrate 98% or above

(3) We will achieve therecycling rate of industrialwaste produced at the sitesof our Group companies to90% or above by fiscal2020. ✽5

Recyclingrate 88% or above

Recyclingrate 85.3%

Recyclingrate 88% or above

Generalwaste

(1) Our Group companieswill work to reduce theamount of general wasteproduced and increase therecycling rate of generalwaste to 75% or above byfiscal 2020 through stricterseparation of waste and thepromotion of recycling.

Recyclingrate 75% or above

Recyclingrate 78%

Recyclingrate 75% or above

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(2) We will reduce theamount of copy paper usedby our Group companies by8% relative to the amountused in fiscal 2012 to 132million sheets or less byfiscal 2020. ✽6

Reduction by

1% from previousyear

Increase of 0.9% from previousyear

Reduction by

1% from previousyear

Excavatedsoil

We are working to reduce,reuse, and recycle (3Rs)excavated soil arising fromroadside construction workordered by our companyand its subsidiaries andaffiliates. Through theseefforts, we will maintain theamount of excavated soil at16% or less until fiscal2020.✽7

Reduce excavatedsoil to 16% or less

Reduced excavatedsoil to 22.3%

Reduce excavatedsoil to 16% or less

Promotion of biodiversityconservation

Our Group companies areaware of the importance ofthe benefits born frombiodiversity (ecosystemservice). As such, we workto understand and analyzethe impacts our businessactivities have onbiodiversity, and work toimprove our businessoperations, promotingactivities for biodiversityconservation. Moreover, aspart of our social programs,we are also involved inissues concerningbiodiversity, even in areasthat are not related to ourown business activities.

- -

- SeeEnvironmentalProtectionGuidelines(2016-2020).

Promotion of greenpurchasing

(1) Our Group companieswork in concert with ourbusiness partners towardthe realization of a lowcarbon society by makingefforts toward energyconservation and COreduction in our purchasingactivities.

- - -

(2) Our Group companieswork in concert with ourbusiness partners towardthe realization of a resourcesaving society through ourpurchasing activities, bymaking efforts to promotethe 3Rs (reducing wasteproduced, reusing, and

- - -

2

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recycling) for gas meters,gas pipes, paper, and otheritems.

(3) The green purchasingrate for purchases madethrough electronic catalogswill be maintained at 75%or above until fiscal 2020.✽8

Greenpurchasingrate of 75%

Greenpurchasingrate of 80%

Greenpurchasingrate of 75%

Promotion of environmentalcommunication

Tokyo Gas Group workstogether with our customersunder a variety of programsto create the kind of eco-friendly and happy lifestylesthat are desired for asustainable future. (1) We work with localcommunities through ourenvironmental contributionactivities and provideinformation on easy ways toconserve energy, thushelping to realize anenvironmentally friendlylifestyle together with ourcustomers.

- -

- See

EnvironmentalProtectionGuidelines

(2016-2020).

(2) We are communicatingwith stakeholders, includingfuture generations, to helpthem learn about theimportance of energy andthe environment, how theyrelate to each person, andhow the Tokyo Gas Groupcontributes toenvironmental protection.

- -

(3) We are fosteringenvironmentalconsciousness amongTokyo Gas Groupemployees and theirfamilies, and encouragingthem to work towardenvironmental conservationin their offices, homes, andcommunities.

- -

Promotion of environmentaltechnologies development

We will accelerate thedevelopment of innovativeenvironmental technologiesin the fields of fuel cells,renewable energy, and inthe management ofhydrogen and CO , and willpromote the expansion of asmart energy network.

- -

- SeeEnvironmentalProtectionGuidelines(2016-2020).

2

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Notes:

Environmental Protection Guidelines (2016-2020) (PDF: 3,061KB)

Framework for Establishing the Guidelines Index

The framework for establishing quantitative indices for the Environmental Protection Guidelines isexplained in the following section.

Guidelines for Global Warming CountermeasuresIn our city gas business, the amount of CO emissions at customers' sites far exceeds that from ourbusiness operations. Thus, reducing the amount of CO emissions at customers' sites is the utmostimportance, and our targets have been established accordingly.Regarding the CO emissions from our own business operation, our primary goal is to reduce theenergy usage intensity of city gas production at our LNG terminals, which have the highest energyusage. We also reduce absolute emissions from energy usage at our offices, etc. Targets have alsobeen set for reducing CO emission factors and the heat sales intensity of power generation andheating and cooling business.

Guidelines for Promotion of Resource SavingThe gas industry is involved in three waste management fields: industrial waste, general waste, andexcavated soil.In particular, industrial waste is managed by: efforts to achieve zero emissions targets at productionplants of Tokyo Gas Group, and by promoting the 3Rs (Reduce, Reuse, Recycle); and efforts toenhance recycling rate of industrial waste generated from locations other than those productionplants.Under the Guidelines revised in fiscal 2014, we are stepping up such efforts by further dividingindustrial waste from locations other than production plants into that from construction sites and thatfrom offices and other locations.When conducting construction work of gas pipeline, roads and other surfaces must be drilled, whichresults in the generation of excavated soil (soil, asphalt concrete, etc.). Thus, we are involved inefforts to reduce, reuse, and recycle in order to reduce the amount of excavated soil generated.

Guidelines for Promoting Green PurchasingWe strive to reduce our overall environmental burden not only by working to improve our ownoperations to use less energy and produce less waste, but also by helping to reduce theenvironmental burden in upstream activities through the promotion of green purchasing. Among our

Reduction of CO emissions through "Global warming countermeasures at customers' sites" has been calculated in thecategories of cogeneration (including ENE-FARM) installation, enhanced efficiency of gas equipment, fuel switching, anddiffusion of power generation from natural gas power plants. Reduction effects of cogeneration and the increase of powergeneration from natural gas power plants were calculated with a marginal emission factor (0.69kg-CO /kWh, 0.65kg-CO /kWh).

✽1 2

22

The average CO emissions factor for transmitted power of all wholesale electricity, including not only business-use powerpurchased from power plants of our Group, but also that of other companies and markets.

✽2 2

"Production plants" refer to sites that produce city gas and other products, district heating and cooling centers, and powerplants.

✽3

"Zero emission" is defined as a "final disposal rate of less than 0.1%," where the final disposal rate is obtained by dividingthe amount of waste disposed of by landfill per year by the total emissions of industrial waste by production plants per year.However, asbestos and other non-recyclable industrial waste are excluded from the figure for total emissions of industrialwaste by production plants.

✽4

Sites refer to our business locations except for production plants and construction work sites. Construction work on mainand branch supply pipelines, for which orders are placed by Tokyo Gas and received by its subsidiaries and affiliates,produces a large amount of industrial waste, most of which is recycled. This has therefore been excluded from this category.

✽5

Amount of copy paper sheets is calculated based on A4-sized paper.✽6Ratio of actual surplus soil disposed of against baseline when compared to that from conventional construction methods.✽7Subject items consist of all items purchased through electronic catalogs, including office supplies, office furniture, officefixtures, business cards, envelopes, and printed materials (but excluding tools, safety items, laboratory instruments, etc.).Calculation was made based on the purchase amount.

✽8

2

2

2

2

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efforts, we are indexing and controlling the green purchasing rate targeting overall purchases fromelectronic catalogs (however, this excludes difficult to acquire eco-friendly items such as tools,safety items, and physics and chemistry equipment).

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Global warming countermeasures at customers´ sites ✽1

The reduction in CO  emissions at customers' sites amounted to 3.43 million tons thanks to the promotion

of natural gas use and the development and popularization of more efficient and environmentally  friendly

gas  appliances  such  as  Eco­JOES  and  CGSs.  The  spread  of  high­efficiency  natural  gas­fired  thermal

power generation made an especially significant contribution to reduced emissions, allowing us to achieve

our target.

Global warming countermeasures in our electric power business✽2

The emission factor decreased due to increased power generation by high­efficiency power plants from the

previous year, allowing us to attain our target.

In parallel with our entry  into  the electricity  retail  business  in  fiscal  2016, we changed our  target  for  the

electric power business from the wholesale stage to  the retail stage  in accordance with commitments  for

achieving  a  low  carbon  society  (new  framework)  and  new  reporting  arrangements  under  the  Act  on

Promotion of Global Warming Measures. As our procurement of supplies  from  the electricity market and

our  use  of  back­up  electric  power  purchased  from  general  electric  utilities  at  the  retail  stage  make  it

impossible  for  us  to  completely  control  the  emission  factor,  our  Guidelines  for  Global  Warming

Countermeasures set a qualitative rather than a quantitative target.

Guidelines for Global Warming Countermeasures (Results of Efforts inFY2015)

2

Reduction of CO  Emissions at Customers' Sites2

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Global warming countermeasures in our business activities(1) Global warming countermeasures at LNG terminals

(2) Global warming countermeasures in district heating and cooling centers

CO  Emission Factor in the Electric Power Business2

Despite  higher  energy  usage  intensity  due  to  an  increase  in  gas  supply  pressure  to meet  growing  gas

demand, we managed to achieve our target by running our facilities more energy efficiently

Energy Usage Intensity at LNG Terminals

Although efficiency improvements were made to our facilities, we were unable to meet our target due to theapproximately six­month shutdown of large­scale district heating and cooling centers' cogenerationsystems for improvement work. We will continue to upgrade our facilities and fine­tune their operation inpursuit of further improvements.

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(3) Global warming countermeasures in Tokyo Gas offices, etc.

Promoting the widespread use of renewable energy

We are verifying  the effectiveness of using  renewable energy  through our efforts  to create smart energy

networks, as demonstrated at the Senju Smart Energy Network and other projects, and we are applying the

insights gained to other redevelopment projects. The input and injection of biogas derived from food waste

into  gas  pipelines  is  taking  place  as  well.  In  fiscal  2015,  we  received  675  thousand  m   of  biogas

(amounting to a CO  reduction of about 1,150 tons).

We also jointly submitted an environmental impact statement with Fukushima Prefecture on a wind power

generation project in Fukushima, and conducted surveys in preparation for implementing the provisionally

named "Fukushima Coastal Wind Power Generation Initiative."

Heat Sales Intensity for District Heating and Cooling Centers

Energy­efficient equipment was installed and energy conservation measures adopted. We achieved ourtarget, aided by an unusually cool summer and mild winter.

Energy Usage at Offices, etc.

3

2

Reduction of CO  emissions through "Global warming countermeasures at customers' sites" has been calculated in thecategories of cogeneration (including ENE­FARM) installation, enhanced efficiency of gas equipment, fuel switching, anddiffusion of power generation from natural gas power plants. Reduction effects of cogeneration and the increase of powergeneration from natural gas power plants were calculated with a marginal emission factor (0.69kg­CO /kWh, 0.65kg­CO /kWh).

✽1 2

22

The average CO  emissions factor for transmitted power of all wholesale electricity, including not only business­use powerpurchased from power plants of our Group, but also that of other companies and markets.

✽2 2

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Promoting Resource Saving of Industrial Waste(1) Efforts toward zero emissions at production plants✽3

(2) Efforts to recycle construction waste and industrial waste generated at our offices

Efforts to Recycle Construction Waste and Industrial Waste Generated at Our Sites

Promoting Resource Saving of General Waste(1) Efforts to separate and recycle general waste

We recycled 78% of our general waste (including 94.1% of our paper waste) in fiscal 2015, exceeding the

target rate for the year of 75% or over. Alongside more rigorous sorting of waste for recycling, employees

are becoming more aware of the importance of cutting emissions and recycling more. We will continue to

work to maintain and raise the recycling rate for general waste as a whole.

Guidelines for Promoting Resource Saving (Results of Efforts in FY2015)

In  fiscal  2015,  we  worked  to  increase  recycling  in  order  to  achieve  zero  emissions  (defined  as  a  final

disposal rate of under 0.1%). As there was still some scope for further resource recycling in some cases,

however,  our  final  disposal  rate  remained  at  1.3%.  We  will  reinforce  our  collaboration  with  disposal

contractors as we continue our efforts to reduce the final disposal rate.

Construction waste 

In fiscal 2015, we failed to meet our target rate for recycling construction waste due to increased

emissions of non­recyclable waste. We will continue to work to reduce emissions and increase

recycling.

Industrial waste at our sites ✽4 

Although the recycling rate improved slightly in fiscal 2015, we fell short of our target due to an increase

in emissions from the previous fiscal year. We will continue our efforts to reduce the amount generated

and recycle more.

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(2) Efforts to reduce usage of copy paper

Our copy paper usage rose 0.9% from the previous fiscal year due to the need to print new standardized

manuals following mergers of subsidiaries and affiliates, and due also to an increase in paper­based work

associated with our sales of electricity. As a result, we were unable to attain our target. We will continue to

practice the 3Rs by replacing paper documents with electronic ones (by, for example, scanning documents,

promoting paperless meetings, and making it easier for employees to keep track of their paper usage).

We will continue to reduce copy paper usage in order to achieve the challenging target set for fiscal 2020.

Promoting Resource Saving of Excavated SoilPromoting the 3Rs for excavated soil from gas pipeline construction

Although  the  amount  that  had  to  be  disposed  of  in  fiscal  2015 was  kept  down  to  22.3%  relative  to  the

baseline amount had the 3Rs not been implemented, we fell short of our final target because (a) there were

cases in which excavated soil could not feasibly be reburied, and (b) there was more work performed on

trunk  lines  in  fiscal  2015,  which  produces  considerably more  excavated  soil  than work  on  ordinary  gas

pipelines. We will  continue  to  pursue  the  reduction  of  excavated  soil  by means  of  the  shallow­laying  of

pipes  in  narrow  trenches  and  non­open­cut  construction  methods.  We  will  also  continue  our  efforts  to

obtain approval  from and negotiate a  relaxation of conditions with authorities  that have not yet approved

reburial  of  excavated  soil  and  the  use  of  improved  soil  and  recycled  road  surface materials  in  order  to

further reduce the amount of soil excavated in gas pipeline construction works.

General Waste Generation and Recycling Rate

Copy Paper Usage and Reduction Rate ✽5

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Making efforts at every stage, from natural gas procurement and production to distribution andmaintenance at customers´ sites

We are working to protect biodiversity throughout the Group's value chain.

At the LNG procurement and transportation stages, follow­up surveys were made of the measuresbeing taken to protect biodiversity at gas fields, confirming that there were no particular problems at the15 projects surveyed (including those under construction or development). We are also continuing tocontrol ballast water during transportation of LNG in vessels owned or managed by Tokyo Gas.At the production and supply stages, the biodiversity of green spaces at our three LNG terminals wassurveyed. Additional surveys were conducted taking into consideration area­wide linkages betweenvarious environmental factors, and the results will be used to assist management of green space in thefuture. The impact of gas pipeline laying work on ecosystems caused by use of pit sand was reduced byreducing, reusing, and recycling (i.e., the 3Rs) excavated soil.With regard to initiatives at customers' sites, we have incorporated biodiversity into our environmentalcommunication activities, including the Watashi no Mori Project ("My Forest") to develop mini forests athousing complexes, and the Donguri (Acorn) Project being undertaken by our Gas Science Museum.We also continued our forest conservation activities and conducted biodiversity surveys at the NaganoTokyo Gas Forest, and provided support to NPOs and other groups through the Tokyo GasEnvironmental Support Fund.

Contributing to the realization of a low carbon society through purchasing activities conductedin concert with our business partners

Efforts in FY2015

We continued our efforts to reduce delivery distances through batch delivery of construction materials.

Contributing to the realization of a resource­saving society through purchasing activities

Ratio of Actual Surplus Soil Disposed of Against Baseline in Gas Pipeline Construction ✽6

"Production plants" refers to sites that produce city gas and other products, district heating and cooling centers, and powerplants. Waste generation here excludes asbestos and other non­recyclable industrial waste.

✽3

"Our sites" refers to our business locations except for production plants and construction work sites. Construction work onmain and branch supply pipelines, for which orders are placed by Tokyo Gas and received by its subsidiaries and affiliates,produce a large amount of industrial waste, most of which is recycled. This has therefore been excluded from this category.

✽4

Amount of copy paper sheets is calculated based on A4­sized paper.✽5

"Disposal ratio" refers to the rate of actual surplus soil disposed of against baseline.✽6

Guidelines for Promoting Biodiversity Conservation (Results of Effortsin FY2015)

Guidelines for Promoting Green Purchasing (Results of Efforts inFY2015)

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Contributing to the realization of a resource­saving society through purchasing activitiesconducted in concert with our business partners

Efforts in FY2015

553 thousand (46%) of the 1,215 thousand meters newly installed were reused, reducing waste by 2,302

tons, while 100% of waste gas pipes were recycled. We are also continuing efforts to recycle waste paper

generated by our company into paper for printing and other uses through the Tokyo Gas Recycled Paper

Program.

Green purchasing rate for purchases through electronic catalogs ✽7

We  achieved  our  target  with  a  green  purchasing  rate  of  80.3%.  This  was  thanks  to  a  combination  of

measures,  including  promoting  the  placement  of  environmentally  friendly  items  in  electronic  catalogs,

system modifications to give priority to environmentally friendly products in searches, and data disclosure

by sector. As of the end of fiscal 2015, 15,165 items had been registered as environmentally friendly.

Environmental Activities at the Local Community Level

We  provided  information  on  the Group's  activities  and  suggested  ways  to  save  energy  in  everyday  life

through  a  variety  of  channels,  including  by  participating  in  environmental  events  organized  by  local

governments,  organizing  seminars,  presentations,  and  workshops,  and  publishing  information  on  our

website. We  further  aided  NPOs  and  other  organizations  through  the  Tokyo  Gas  Environment  Support

Fund, passed on environmentally friendly dietary tips through our "eco­cooking" program, and contributed

to the creation of community green spaces through the Tokyo Gas Tree Planting Project.

Education on energy and the environment for the next generation

Tokyo Gas employees taught special classes in elementary and junior high schools (434 classes reaching

13,020  pupils). We  also  assisted  the  provision  of  energy  and  environmental  education  by  teachers  (by

providing training for 842 teachers).

We  have  also  allocated  a  greater  role  to  our  Gas  Science  Museum  as  a  center  for  energy  and

environmental education, and have launched two new field trip courses: one on the environment and one

on energy.

Green Purchasing Rate

Subject items consist of all items purchased through electronic catalogs, including office supplies, office furniture, officefixtures, business cards, envelopes, and printed materials (but excluding tools, safety items, laboratory instruments, etc.).Calculation was made based on the purchase amount.

✽7

Guidelines for Promoting Environmental Communication (Results ofEfforts in FY2015)

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Events normally held in Nagano as part of the Donguri (Acorn) Project, an outdoor environmental education

program at Nagano Tokyo Gas Forest, were held instead at our Gas Science Museum due to the eruption

of nearby Mount Asama.

Through all these activities, we helped provide the children upon whom the future depends with enhanced

opportunities to learn about energy and the environment.

Cultivating environmental consciousness among Tokyo Gas Group employees and their families

We provided  a  range  of  programs  for  Tokyo Gas Group  employees,  including  environmental  education,

symposiums, and eco­driving courses. In February 2016, we held Environmental Forum 2016 to encourage

employees to think about how they can personally address environmental issues moving forward in light of

COP21. The event was attended by about 500 employees of Tokyo Gas Group.

We  also  again  presented  our  the  Environmental  Program Promotion  Award  to  honor  the  environmental

contributions made by Tokyo Gas Group members and business partners, and continued to run the Tokyo

Gas Tree Planting Project  participated  in  by  employees  and  their  families.  Through  these  initiatives, we

have cultivated environmental consciousness among Tokyo Gas Group employees and their families, and

encouraged environmentally friendly practice in the home and in communities.

Development of innovative environmental technologies to contribute to the realization of a lowcarbon society

We realized and brought to market efficiency enhancements and other improvements achieved through

joint development of various cogeneration systems and air conditioners.

Regarding fuel cells, we began demonstration testing of a 5 kW­class solid oxide fuel cell (SOFC) at a

public facility, and we also succeeded in producing the theoretical design for an innovative technique to

raise the power generation efficiency of SOFCs to over 80%.

To promote the adoption of smart energy technologies, we developed a smart energy network in Block II

of the northern district adjacent to Tamachi Station's east exit, and we developed and began marketing

the ENESINFO service for optimally controlling "Smart Multi" commercial gas/electricity air­conditioning

systems.

In the hydrogen field, our Senju and Urawa Hydrogen Stations entered commercial operation, and we

joined the NEDO­backed research and development project on hydrogen utilization technology to

pursue R&D on hydrogen stations.

Guidelines for Promoting the Development of EnvironmentalTechnologies (Results of Efforts in FY2015)

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In order to promote environmental protection activities in line with our Management Philosophy, Corporate

Action Philosophy, Our Code of Conduct,  and Environmental Policies,  Tokyo Gas has developed and  is

operating  an  environmental  management  system  (EMS)  that  complies  with  the  ISO  14001:2004

international  standard. We ensure  that  resource  and  energy  conservation  and  various  other  activities  to

protect the environment are practiced properly and systematically by applying solid PDCA principles, and

these initiatives offer the additional benefit of reducing costs. We plan to be compliant with ISO 14001:2015

from September 2017. We will continue working to raise employees' environmental awareness and ensure

legal compliance by promoting ISO­compliant business practices.

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Tokyo  Gas  Group  has  introduced  EMS,  including  certification  to  ISO  and  Eco­Action  21  standards,  at

consolidated  subsidiaries  and  affiliates  and  other  group  companies  that  have  a  major  impact  on  the

environment  in  order  to  enhance  environmental  management  throughout  the  Group.  Today  95%  of  the

Group (in terms of sales) practices environmental management in accordance with ISO 14001 standards.

Looking  ahead,  we  will  explore  new  arrangements  for  implementing  EMS  that  are  suited  to  individual

Environmental Management System 2016

Efforts of the Group

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companies' scales and lines of business as we construct our new group formation, and the Group will work

as one in pursuing steps to improve the environment.

Status of implementation of Environmental Management System by Tokyo Gas and its consolidatedsubsidiaries (May 1, 2016)

Tokyo Gas Co., Ltd. [ISO]

<Residential Sales and Service Division>Living Engineering Co., Ltd. / Tokyo Gas Remodeling Co., Ltd. / Tokyo Gas Lease Co., Ltd. / Tokyo GasTelemarketing Co., Ltd. / Tokyo Gas Living Line Co., Ltd. / Tokyo Gas Lifeval Nishi­Ota Co., Ltd. / TokyoGas Lifeval Minami­Setagaya Co., Ltd. / Tokyo Gas Lifeval Chiba Co., Ltd. / Capty Co., Ltd. (ResidentialSales and Service Division) [ISO]

<Energy Solution Division>Tachikawa Toshi­Center Co., Ltd. / Capty Co., Ltd. (Energy Solution Division) [ISO]

<Regional Development Division>Tokyo Gas Energy Co., Ltd. / Enelife Carrier Co., Ltd. / Tokyo Auto Gas Co., Ltd. / Tokyo Gas LPG TerminalCo., Ltd. / Tochigi Gas Co., Ltd. [ISO] / Washinomiya Gas Co., Ltd. [ISO] / Shoei Gas Co., Ltd. [ISO] /Nagano Toshi Gas Co., Ltd. [ISO] / Tokyo Gas Yamanashi Co., Ltd. / Showa Unyu Co., Ltd.

<Pipeline Network Division>Capty Co., Ltd. (Pipeline Network Division) [ISO] / Capty Tech Co., Ltd. ✽1 / Kawasaki Gas Pipeline Co.,Ltd. ✽2 / Tokyo Gas Pipeline Co., Ltd.

<Regasification & Power Generation Division>Tokyo Gas Baypower Co., Ltd. (Sodegaura Power Station) [ISO] ✽2 / Tokyo Gas Yokosuka Power Co., Ltd./ Ohgishima Power Co., Ltd.

<Energy Resources & Global Business Division>Tokyo LNG Tanker Co., Ltd. [ISO] ✽2

<IT Division>Tokyo Gas i Net Corp.

<Other>Tokyo Gas Engineering Solutions Corporation / Tokyo Gas Communications, Inc. / Tokyo Gas Auto ServiceCo., Ltd. / Tokyo Gas Urban Development Co., Ltd. [ISO] ♯1 / Tokyo Gas Facility Service Co., Ltd. [ISO] ♯2 /Tokyo Gas Site Development Co., Ltd. / Tokyo Gas Liquid Holdings Co., Ltd. / Tokyo Gas Chemicals Co.,Ltd. / Tokyo Oxygen And Nitrogen Co., Ltd. / Tokyo Carbonic Co., Ltd. / Tokyo Rare Gases Company, Ltd. /Japan Super Freeze Co., Ltd. [ISO] / Niccho Operation Co., Ltd.✽3 / Park Tower Hotel Co., Ltd. / Nijio Co.,Ltd.✽2 (Total of Tokyo Gas Co., Ltd. and 43 consolidated subsidiaries in Japan)

[ISO] ISO14001:2004 certification

In fiscal 2015, an internal audit of 50 divisions' conformance in the areas set forth in our internal auditing

plan found no instances of non­conformance with the requirements of the ISO 14001:2004 standards, and

EMS was found to be functioning effectively.

Included in the EMS activities of Capty Co., Ltd.✽1

Included in the EMS activities of Tokyo Gas Co., Ltd.✽2

Included in the EMS activities of Japan Super Freeze Co., Ltd.✽3

The ISO registration scope covers operational activities of the building of Shinjuku Park Tower (excluding the hotel).♯1The ISO registration scope covers the head office and the management division of the Park Tower.♯2

In addition to the ISO­compliant EMS, the Group runs an "Eco­Action 21" program, an EMS program for subsidiaries andaffiliates developed by Tokyo Gas, a LIFEVAL EMS program, and EMS programs developed independently by individualgroup companies.

Result of Internal Audit

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Tokyo Gas believes that being actively involved in both regional and global environmental issues is an

important aspect of our corporate management, and we conduct our business activities accordingly. We

identify the latent environmental risks present in our business activities, and we practice proper

management to mitigate them and prevent them from having a serious impact on the environment. We also

voluntarily research and publish information on the environmental impacts and pollution caused by our

operations in the past, and we believe that we must take swift action to address any concerns that arise in

order to protect the environment. 

When serious environmental risks manifest themselves, we take swift emergency action and measures to

prevent a recurrence according to their risk level in accordance with our Emergency Response

Organization Regulations, and we also standardize management flows to ensure that secondary risks do

not arise.

In fiscal 2015, we committed no infringements and were subject to no fines under any laws or ordinances

on the environment.

Since  fiscal  1999, we have been  conducting  soil  tests  and groundwater  surveys on all  land  currently  or

formerly owned by Tokyo Gas on which  soil  contamination may have occurred,  such as  the  sites of  old

plants.  When  contaminants  have  been  found,  we  have  proactively  released  the  relevant  information

through a variety of methods, including by reporting the issue to the relevant local authority, informing the

media,  and explaining  the  situation  to  local  residents. The  revised Soil Contamination Countermeasures

Act  came  into  force  in  2010,  and  we  will  continue  to  abide  by  applicable  laws  and  ordinances  in  a

responsible manner. Press releases related to soil contamination can be viewed under the List of Measures

Taken for Soil Remediation on our website. All necessary measures have already been fully implemented

at our sites.

Although virtually no hazardous chemicals are used in the process of producing and supplying gas, theGroup will continue to manage chemical substances in accordance with applicable laws and regulationsand take action to reduce emissions.

In fiscal 2015, the Group handled or otherwise dealt with the following amounts of substances subject toreporting under the PRTR Act.

State of Compliance with Environmental Regulations and Fines

Measures Taken for Soil Remediation

Management of Chemical Substances

Response to the PRTR Act✽

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Tokyo Gas

Subsidiaries and Affiliates of Tokyo Gas

(Unit: kg)

Substance Amount handled Release Transfer Remarks

Xylene 4,414 0.1 0.0 Refueling

1,2,4­Trimethylbenzene 2,251 0.0 0.0 Refueling

Toluene 9,595 0.5 0.0 Refueling

N­hexane 2,832 1.1 0.0 Refueling

Benzene 501 0.1 0.0 Refueling

(Unit: kg)

Substance Amount handled Release Transfer Remarks

Nickel 1,058 0.0 52.0 Heat exchanger brazing

Tokyo  Gas  identified  and  inspected  specified  products  (commercial  air  conditioners,  refrigerators,  andfreezers) for which it is responsible as manager under the Act on Rational Use and Proper Management ofFluorocarbons, which came into force in April 2015. As a registered fluorocarbons filling/recovery operator,it also collected and appropriately disposed of fluorocarbons removed during inspections and maintenanceof GHP products.

VOC Measures

Since 1991, Tokyo Gas has been working on reducing VOCs (volatile organic compounds) emission when

painting  items  such as gas holders. Recent  efforts  include  the  transition  to  a  painting method  that  uses

weak solvent­based paints  (low VOC paint method). We will continue  to work on  further VOCs emission

reduction.

Hazardous waste management

Act on Confirmation, etc. of Release Amounts of Specific Chemical Substances in the Environment and Promotion ofImprovements to the Management Thereof

Measures for Fluorocarbons

Estimated Leakage as Manager

Amounts Filled, Recovered, and Destroyed by Tokyo Gas as a RegisteredFluorocarbons Filling/Recovery Operator

(Unit: t­CO eq)

Substance Estimated leakage

HCFC 44.0

HFC 129.1

(Unit: kg)

Substance Filled Recovered Destroyed

HCFC 54.0 29.8 29.8

HFC 4.0 1.6 1.6

2

Paintwork on gas holder

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Hazardous waste management

Hazardous waste held by Tokyo Gas that contains PCBs  is centrally stored at  the Negishi LNG Terminal

and other sites, and managed appropriately  in accordance with  the Act on Special Measures concerning

Promotion of Proper Treatment of PCB Wastes. Items such as high­level PCB­contaminated high voltage

transformers  and  capacitors  and  low­level  PCB­contaminated waste  are  processed  properly  in  line with

administrative processing schedules and policies. High­level PCB­contaminated capacitors and stabilizers

of less than 3 kg were pre­registered with JESCO in the first half of fiscal 2016 and are to be appropriately

disposed of in fiscal 2017.

Disposal of PCB Waste in FY2015

Substance Disposal amount

Low­level PCB­contaminated high voltage transformers and capacitors 10 units

Low­level PCB­contaminated reactors 3 units

Low­level PCB­contaminated discharge coils 6 units

The Group recognizes concerns that climate change may affect our business activities as follows, and  is

taking appropriate action in response.

Global warming countermeasures (mitigation)

In order to reduce emissions of greenhouse gases, which are considered to be a cause of temperature rise,

the  Group  has  formulated  Guidelines  for  Global  Warming  Countermeasures  and  will  act  to  reduce

emissions  from our main sources of emissions, namely city gas production  facilities, district heating and

cooling centers, power plants, and offices, as well as work to reduce emissions at customers' sites.

<Link>Toward the Realization of a Low Carbon Society

Natural disaster countermeasures (adaptation)

Among the possible effects of climate change (heavy localized downpours, storm surges, etc.) are damage

to  city  gas  facilities  and  delays  to  or  interruption  of  LNG  supplies  in  transit.  Tokyo  Gas  is  therefore

hardening its production and supply facilities against disasters, and is making active use of private­sector

weather  forecasts  to  help  prepare  for  and  prevent  wind  and  flood  damage.  In  addition,  we  believe  that

diversifying the sources of the LNG we use to make city gas will help limit disruption to supply chains in the

event that a source is struck by a natural disaster.

Response to stricter legal regulation to combat climate change

Regulations in areas such as carbon emission trading and carbon taxes may impose constraints on the use

of fossil fuels. However, by stepping up efforts to encourage fossil fuel users to switch from oil and coal to

cleaner  natural  gas,  promote  wider  adoption  of  highly  energy  efficient  equipment  and  systems  such  as

cogeneration  systems,  encourage  renewable  energy  use,  and  develop  smart  energy  networks,  we  are

committed to contributing to the realization of a low carbon society.

Action on Climate Change

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The Group recognizes threats to water resources as a business risk and therefore manages the amount of

tap water,  industrial water, and seawater  it uses  in order  to conserve  freshwater and control wastewater

emissions. In fiscal 2015, we used a total of 5,421 thousand m  of freshwater at the LNG terminals where

city  gas  is  produced,  district  heating  and  cooling  centers  (DHCs),  power  plants  using  LNG,  offices,  and

other  facilities  in Japan. We are working  to  reduce process water consumption at LNG terminals, DHCs,

and power plants by optimizing boiler operation, reducing steam loss, replacing chillers with more efficient

electric  turbo  types,  and  more.  To  reduce  our  use  of  tap  water  at  offices  and  similar  facilities,  we  are

making greater use of wastewater, installing water­saving toilets, and encouraging employees to conserve

water. Regarding wastewater, we measure emissions and manage indicators of water quality, including pH,

COD,✽  and  nitrogen  and  phosphorus  concentrations,  in  accordance  with  local  government  ordinances,

agreements, and other relevant standards. Seawater is used mainly at LNG terminals and power stations

as a heat source, and is returned in its entirety to the sea. Looking overseas, although we are not presently

doing  business  in  any  regions  subject  to  high  water  risk,  we  will  monitor  risks  wherever  we  establish

operations and respond appropriately as we accelerate our globalization in the years ahead,.

Water resource inputs of Tokyo Gas Group (tap/industrial water)

Action on Water Risks

3

COD: Chemical Oxygen Demand.✽

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As an energy company, Tokyo Gas Group recognizes its duty to prioritize action to prevent global warming.

We  have  therefore  established  Guidelines  for  Global  Warming  Countermeasures  that  set  concrete

numerical targets, and are working as a group to put them into practice. As CO  emissions from LNG value

chains are highest at  the city gas consumption stage,  i.e.,  customers'  sites, we place a strong  focus on

curbing  emissions  at  this  point  and  are  pursuing  a  variety  of  strategies  to  achieve  this,  including  the

development and adoption of low­carbon systems. In the electric power segment of our business activities

(see  diagram  below)  we  are  taking  active  steps  to  generate  power  using  highefficiency  thermal  power

plants, and generate and procure more power produced using renewable energy. We are also monitoring

the  impact  on  global  warming  of  our  raw  material  procurement  activities,  and  are  working  with  group

companies to deploy high­efficiency LNG carriers to reduce emissions from transportation by sea.

Looking ahead, we will contribute further to the fight against global warming by rolling out our CO  emission

reduction technologies to other countries and other means in order to meet social needs and expectations

in the wake of COP21.

2

2

Greenhouse Gas Emissions along the LNG Value Chain (FY2015)

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<Link>Tokyo Gas Group Business Activities and Material Balance

Action along the LNG value chain (FY2015)

Calculated based on emission intensity analyzed following the LCA (life­cycle assessment)✽1, 2

Standards for calculation and reporting of greenhouse gas emissions: Scope 1: Business's own direct emissions of greenhouse gases. Scope 2: Indirect emissions from consumption of electricity, heat, and steam supplied by others. Scope 3: Indirect emissions other than covered in Scope 1 and 2 (emissions by other parties involved with business'sactivities).

✽3,4

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As gas use by customers is the largest source of CO  emissions along the LNG value chain, Tokyo Gas

Group  places  a  particular  focus  on  reducing  CO   emissions  at  customers'  sites.  Specifically,  we  are

pursuing a number of strategies to achieve this, including not only encouraging users to switch from other

fuels to natural gas, but also the development and dissemination of highly energy­efficient equipment and

systems,  the support of  renewable energy use, and the development of smart energy networks. We also

suggest ways our customers can use energy more efficiently in their daily lives through activities including

the provision of "Eco­Life" proposals and energy and environmental education for the next generation.

2

2

Reduction of CO2 Emissions at Customers' Sites✽

Reduction due to diffusion of gas cogeneration and natural gas­fired power generation was calculated using marginalcoefficients (respectively 0.69 kg­CO /kWh (demand side) and 0.65 kg­CO /kWh (transmission side)).

2 2

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To cut the CO  emissions generated when customers use city gas, we are developing and promoting wider

use of highly energy­efficient equipment and systems.

In  the  residential  sector,  we  are  developing  and  encouraging  wider  use  of  gas  stoves  fitted  with  highly

energy­efficient burners, high­efficiency latent heat recovery gas water heaters, and home generators that

utilize waste heat at the same time as they generate electricity.

Whereas  conventional  residential  gas water  heaters  have  a maximum heating  efficiency  of  80%,✽  high­

efficiency Eco­JOES home water heaters come equipped with an exhaust heat and  latent heat  recovery

system that boosts this figure to 95%.✽ Assisted by the  industry­wide “Eco­JOES Adoption Campaign”  to

promote the adoption of Eco­JOES, the number of home installations is rising by the year. As of the end of

fiscal 2015, the number shipped by the industry as a whole had reached some 6,270,000. Our estimates

show that  these units produce 13% lower CO  emissions than conventional models. We are also adding

EneLook functionality to our water heater remote controls to display how much gas and hot water is being

used, helping our customers to save water and energy.

2

Popularization of high­efficiency gas appliances in the home

Popularization of high­efficiency Eco­JOES water heaters

2

Calculated on higher heating value (HHV) basis.✽

How Eco­JOES High­Efficiency Water Heaters Work

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Aisin model Panasonic model Yanmar model

In the commercial air conditioning market, we are promoting the GHP XAIR gas heat pump air­conditioning

system,  which  cuts  annual  energy  consumption  compared  with  previous  models,  and  "natural  chillers"

which use natural refrigerant for building use. We are also encouraging adoption of Suzuchu cool kitchen

systems, which reduce heat and air­conditioning load in locations such as restaurants and hotel kitchens.

Popularization of high­efficiency gas heat pumps (GHPs)

GHP  air­conditioning  systems  both  save  power  and  conserve  energy,  and  we  have  been  working  to

promote  the XAIR series of GHPs, which are  the most efficient of all.  In October 2015 we  launched  the

even  more  energy­efficient  GHP  XAIR  II  with  20%  lower  annual  primary  energy  consumption  than  its

predecessor. This is made possible by its lower engine speed in the light load zone that accounts for much

of the system's running time, allowing it to function even more efficiently.

GHP XAIR II

Annual Energy Consumption Compared to the XAIR

Comparison between 15­year­old model and XAIR based on actual past performance. Comparison between XAIR and XAIRII based on Tokyo Gas estimates.

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Our Green Help Pro✽ service achieves energy savings without sacrificing comfort by allowing GHPs to be

controlled over the Internet so that they can be operated more efficiently and their operating status can be

tracked at a glance. Since April  2016, we have also offered Smart Multi  air­conditioning systems, which

help lower energy consumption, CO  emissions, and peak load by combining a GHP with an electric heat

pump  (EHP)  using  the  same  refrigerant  system.  These  can  be  optimally  controlled  by  the  ENESINFO

remote control service, also launched that same month.

2

Green Help Pro is a registered trademark of Tokyo Gas.✽

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In the industrial sector, we are dramatically cutting CO  emissions by enabling energy users to switch from

fuels such as oil and LPG to natural gas, and to use natural gas in more sophisticated ways. We are also

helping businesses reduce their energy use, CO  emissions, and costs by delivering a variety of solutions.

These include TG Miru Net, which monitors and analyzes facilities online so that customers can keep track

of their energy usage at a glance, and the Steam Fit steam energy service, which helps customers optimize

their generation, supply, and use of steam.

Promotion of high­efficiency burners for industrial furnaces

Regenerative burner systems work by capturing the heat from exhaust gas in a heat reservoir and using it

to preheat an air feed, resulting in extremely high combustion efficiency coupled with low NOx emissions.

Up to 50% more energy efficient  than conventional systems,  these systems are drawing attention for  the

crucial contribution that they can make to reducing CO  emissions from industrial furnaces.

Reducing CO  emissions by switching to natural gas and using it more efficiently

Switching  from  fuels  such  as  oil  and  LPG  to  natural  gas  can  reduce  CO   emissions  by  about  25%.

However, emissions can be slashed even further by switching to more efficient equipment and systems and

making more sophisticated use of natural gas.

2

2

2

Regenerative burner system

2

2

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Gas cogeneration systems (CGSs) are distributed energy systems that generate electricity by means of a

high­efficiency engine powered by clean natural gas, a turbine, and a fuel cell, while capturing the waste

heat generated in the process to produce steam or hot water, which is then supplied, along with electricity,

in the location of installation. Systems of this kind are very environmentally friendly, enhance energy

security (by providing power source redundancy), and help conserve electricity. At the end of fiscal 2015,

1,943 MW of CGS capacity (excluding the residential sector) was in operation in Tokyo Gas's service area.

Innovations in gas cogeneration technology

Some  CGSs  surpass  the  average  efficiency  (on  the  demand  side,  including  transmission  loss)  of

conventional  thermal  power  plants  as  a whole  due  to  advances  in  generating  efficiency  pursued  during

technology development,  and  it will  be possible  to achieve major  reductions  in energy consumption and

CO  emissions as well by combining these technologies with effective waste heat recycling technologies. In

fiscal 2015, we launched a new compact 35 kW CGS model that achieved top­of­its­class total efficiency of

88% thanks to the increased amount of waste heat captured by employing stoichiometric combustion✽ and

the higher heat exchange efficiency made possible by  improvements  to  the heat exchanger. The use of

high­temperature operating solid oxide fuel cells (SOFCs) is expected to lead to even more efficient CGSs

in the future.

2

A method of combusting a gas fuel mixed with air at a concentration at which they react completely.✽

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Effective use of energy and reduction of CO  emissions by a gas cogeneration system

Commencement of 5 kW­class commercial fuel cell demonstration trial at a public facility inArakawa

In March  2016,  we  installed  a  5  kW­class  commercial

fuel cell at the Arakawa Sogo Sports Center in Arakawa,

Tokyo, and a demonstration  trial  is now underway. The

approximately  one­year  trial  will  run  until  the  end  of

March  2017  and  is  being  conducted  under  an

agreement  on  real­world  testing  of  5  kW­class

commercial  fuel  cells  signed  between  Arakawa  and

Tokyo Gas  at  the  end  of  2015.  It  is  the  first  trial  of  its

kind to be conducted at a public facility in Japan.

Electricity generated by a commercial SOFC will power

first­floor lighting at the center, while waste heat will be used to produce some of the hot water for

locker room showers. During the trial, a monitor will be displayed showing the amount of electricity

generated  by  the  SOFC,  and  visitors  will  be  able  to  experience  the  hot  water  produced  for

themselves. The project will be used to raise awareness of fuel cells and the contribution that they

2

Estimated by Tokyo Gas.Note:

On a lower heating value (LHV) basis. The heat efficiency and total loss of thermal power plants was calculated based onthe FY2003 operating performance of the nine electric power companies and wholesale electricity utilities (Subcommittee onClassification Standards for Plants and Other Facilities, September 2005).

✽1

Efficiency of gas cogeneration system on an LHV basis using the recommended configuration.✽2

Grid power emission factor of 0.66 kg­CO /kWh (average thermal power factor in fiscal 2030 according to the Plan forGlobal Warming Countermeasures announced in May 2016).

✽3 2

Presentation on the 5 kW­class commercialfuel cell demonstration trial

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can make to creating a low carbon society.

Breaking the 80% power generation efficiency barrier: Successful development of a theoretical design for an innovative concept to dramatically improve solid oxide fuel cell efficiency

In  a  joint  study, Kyushu University's Next­Generation Fuel Cell Research Center  (NEXT­FC) and

Tokyo  Gas  have  succeeded  in  designing  an  innovative  concept  to  dramatically  improve  the

electrical efficiency over 80% LHV (lower heating value) of SOFCs and proving its mechanism in a

world  first.  This  result  was  published  in  July  2015  in  Scientific  Reports,  Nature's  sister  online

publication.

Super­efficient  energy  conversion  from  fossil  fuel  to  electricity  is  expected  to  make  a  major

contribution  to  reducing  CO   emissions  and  provide  the  core  energy  technology  for  creating  a

highly environmentally  friendly  smart  energy  society.  In addition,  super­efficient  power generation

systems are potentially  far more adaptable  to market needs because  they produce so  little waste

heat during the power generation process that  they can eliminate the need to make use of waste

heat.

Schematic of Innovative Concept for Further Improving the Electrical Efficiency

Residential cogeneration systems: ENE­FARM fuel cells for home use

In  a  world  first,  the  ENE­FARM  residential  fuel­cell  cogeneration  system  designed  for  use  in  detached

dwellings went on general sale  in May 2009. ENE­FARMs can cut primary energy consumption (at rated

operation)  by  about  37%  and  CO2  emissions  by  about  47%  (1.2  t/year)  compared  with  conventional

systems producing an equivalent amount of electricity (0.7 kWh) and heat (1.01 kWh). They are expected

to play a key role in taking the fight against climate change into the home.

2

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The  ENE­FARM  lineup  for  detached  dwellings  underwent  facelifts  in  2011  and  2013,  followed  by  the

release  of  a  new  fourth model  in  April  2015.  To meet  demand  for  a  way  to  be  able  to  continue  using

electricity during power outages,  the new model has a built­in self­sustaining power generation capability

allowing  operation  during  a  grid  power  failure  (formerly  only  available  as  a  separate  option).  In  another

world first, an ENE­FARM model designed specifically for home use in housing complexes was launched in

April  2014.  Due  to  the  more  restrictive  installation  conditions  found  in  condominiums  than  in  detached

homes, this new model's main unit was made more airtight, allowing it to be installed in the pipe shafts of

open hallways in condominium buildings. So that it could be installed on higher floors as well,  it was also

made more earthquake  resistant  by  strengthening  the  legs used  to anchor  the unit,  and  the  supply and

exhaust  structure was modified  to  improve wind  resistance  and  allow  operation  in  strong winds.  In  July

2016, the condominium model range was further expanded with new models with added functionality such

as built­in self­sustaining power generation capability.  In March 2016, combined sales of ENE­FARMs for

detached homes and condominiums hit the 60,000 mark.

"ENE­FARM" residential fuel cellcogeneration system

CO  emissions (g­CO )

(Assumptions for estimates)

2 2

Comparison with a conventional system used to produce the equivalent amount of electricity (0.70kWh) and heat (1.01 kWh/approx. 35 L at 40 °C with water temperature of 15 °C) as an ENE­FARM atrated operation for one hour

CO  emission factor: 0.65 kg­CO /kWh for electricity (average factor for thermal power in FY2013 according to the Plan forGlobal Warming Countermeasures (May 2016)), 2.29 kg­CO /m  for gas (Tokyo Gas data)

(1) 2 22 3

Annual load: 16.6 GJ for hot water, 1.3 GJ for bath reheating, 2.2 GJ for cooking, 6.4 GJ for AC (cooling), 12.7 GJ for floorheating, 5.5 GJ for AC (heating), 12.5 GJ for lighting, etc. (for a four­person family living in a detached dwelling with a totalfloor area of 120 m )

(2)

2

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Electricity demand for a dwelling supplied with both gas and electricity (using conventional systems): 4,223 kWh (includingpower consumed by gas water/space heater)

(3)

Equipment used for conventional system: gas water/space heater, gas hydronic floor heating (living room), gas stove,electric AC used for cooling and heating in other rooms ENE­FARM: ENE­FARM, gas hydronic floor heating (living room), gas stove, electric AC used for cooling and heating inother rooms

(4)

Figures may not sum due to rounding.Note:

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Maximum adoption of renewable energy sources is essential to the development of a low carbon society.

However,  given  the  current  state  of  renewable  energy  technology,  there  is  presently  little  installed

renewable capacity and costs remain high. Vulnerability to changing weather conditions and other factors

also work to make renewables an unstable energy source.

To  counter  these  problems,  Tokyo  Gas  Group  offers  systems  that  combine  renewable  use  with  gas

appliances to compensate for the instability of solar output. Natural gas cogeneration systems (gas CGSs)

provide  a  comparatively  easy­to­control  means  of  meeting  heat  demand  that  can  compensate  for  the

instability of power generation using renewables, making  it  the  ideal "partner"  for encouraging the further

adoption  of  renewable  energy  technologies.  It  is  also  possible  to make  efficient  use  of  a  regions'  latent

biomass resources by deploying such natural gas­based technologies as multi­fuel combustion.

Tokyo  Gas  offers  two  solutions  that  combine  use  of  gas  and  renewables  in  the  home:  Dual  Power

Generation,  which  combines  photovoltaic  power  generation  with  an  ENE­FARM  or  an  ECOWILL  home

generator,  and SOLAMO, which  combines  solar  heating with  an Eco­JOES high­efficiency water  heater.

Both of  these solutions provide the backup systems needed when actively utilizing solar energy given  its

fluctuating output, and can make a major contribution to reducing households' environmental footprints.

Alongside  SOLAMO,  we  also  offer  commercial  users  a  solar  cooling  system  which  uses  solar  thermal

energy for air conditioning, in order to further encourage their adoption of renewable energies.

Schematic of Water Heating System Using Solar Heat

Active Utilization of Solar Energy

Schematic of Dual Photovoltaic and ENE­FARM Power Generation

The photovoltaic system is not a Tokyo Gas product.Note:

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Solar heat collector

Biomass is the generic term for plant and animal­derived organic resources (excluding fossil resources)that

can be recycled into energy and material. Examples of biomass are rice straw, forest and fishery products

such  as  livestock  excrement,  food  waste,  sewage  sludge,  and  waste  wood.  Dried­biomass  can  be

combusted directly to obtain heat and electricity from the steam thus generated, and also wet­biomass can

be  fermented  to  produce  biogas  for  use  as  energy  by,  for  example,  cogeneration  systems. As  the CO

emitted as a result of combusting biomass or biogas is CO2 that had been absorbed from the atmosphere

by photosynthesis during organic processes, using energy  from biomass  in place of energy derived  from

fossil  resources  can  make  a  major  contribution  to  reducing  total  CO   emissions,  which  is  one  of  the

greenhouse gases driving global warming.

We  aim  to  expand  and  popularize  the  use  of  biomass  to  help  reduce  greenhouse  gas  emissions  by

promoting  not  only  the  technologies  for  using  biogas  that  we  have  developed  to  date  (such  as  mixed

combustion of  city gas and biogas),  but also  technologies  for generating biogas more economically and

efficiently  through methane  fermentation  of  biomass  such  as  food waste,  together with  technologies  for

upgrading the biogas into higher quality gas.

Schematic of Solar Cooling System Using Solar Heat

The natural chiller is used to provide air conditioning in summer. Natural chiller: An air­conditioning system that uses heat from the vaporization of water. A solar natural chilleruses solar heat as well as gas as its heat source to reduce energy consumption and cost.

Effective Use of Biomass

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2

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Pilot methane fermentation plant at a research institute

Development of biogas utilization technologies

Tokyo Gas Group possesses technologies for digesting biomass such as food waste and sewage sludge

for use as fuel for boilers and power generators, and is currently using biogas generated at customers' sites

primarily  as  fuel  for  generating  electricity  by  CHP  (onsite  use).  As  biogas  is  a  lean  fuel  consisting  of

approximately 60% CH  and 40% CO , CHP must be specially designed to run on it.

We were the first in Japan to begin upgrading biogas, adjusting its calorific value, and odorizing it so that it

could be injected to city gas grid. In fiscal 2015 we received 675 thousand m  of biogas (equivalent to an

approximately 1,151­ton reduction in CO  emissions) derived from food waste into our pipelines.

How Biogas is Fed into Gas Pipelines

In addition to the above, we have been engaged in joint research with Yokohama City since fiscal 2013 with

the goal of broadening the use of biogas generated at the North Yokohama Sludge Recycling Center. For

this project, research is being conducted on ways to remove CO  from digestion biogas using separation

membranes  to  produce  concentrated methane,  and we  are  also  studying ways  of  using  biogas  in  high­

efficiency CHP such as solid oxide fuel cell (SOFC) systems.

4 2

3

2

2

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Test biogas refiner at the Yokohama CityHokubu Sludge Treatment Plant

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Developing a sustainable society requires not only reducing CO  emissions as has long been sought, but

also society­wide action to conserve electricity and ensure energy security.

As one means of solving issues such as these, Tokyo Gas Group is promoting the development of "smart

energy communities" to make smarter use of energy by connecting the buildings in a community via a heat

and electric power network. At the same time, we are pursuing improvements at the building level to turn

homes, office buildings, and factories into smarter energy users.

Creating Smart Energy Communities

Smart energy communities are created by developing smart energy networks  (SENs). These combine a

gas  cogeneration  system  for  generating  and  consuming  heat  and  electricity  locally  with  the  use  of

renewable and untapped energy  resources  to create a heat and electricity network across which energy

supply and demand  is  optimized by energy management using  ICT. Making waste­free use of  heat  and

electricity at the community level in this way serves to raise energy efficiency in the community as a whole,

allows business activities and everyday life to be sustained in the event of a power outage, and enhances

cities' value.

Energy­smart  community  development  is  spreading  throughout  the  Tokyo  metropolitan  area,  further

propelled by central and local government policies.

<Link>Social Report / Working with Local Communities / Safe and Secure Ways of Life and Urban Development

To promote smarter energy use  in everyday  life, we built an employee dormitory  in  Isogo­ku, Yokohama,

that  makes  maximum  use  of  renewable  energy  and  distributed  energy  systems,  and  conducted

demonstration tests there for three years from April 2012 to March 2015.

The tests involved sharing energy at the housing complex level and operating systems efficiently by means

of integrated control. Residents were encouraged to save energy by providing incentives and by enabling

them  to keep  track of  their energy usage at a glance by means of a home energy management system

(HEMS).  The  tests  confirmed  the  energy­saving  effect  of  these  measures  in  resident­occupied  areas.

Demand  response  using ENE­FARM and  storage  battery  cell  systems was  also  tested  under  real­world

conditions designed to replicate power shortages at the local level.✽

The project achieved an approximately 30% reduction in energy consumption and a 38% reduction in CO

emissions overall thanks to the installation and efficient use of ENE­FARMs and other equipment. We also

achieved  a  7%  energy  saving  in  resident­occupied  areas  as  a  result  of  changes  in  resident  behavior

brought about by the installation of HEMS. In addition, peak load was cut by 58% in summer and 49% in

winter as a result of demand response.

2

Making Life Smarter

2

This is a means of adjusting electricity demand on the user side in response to a request to limit power use. Supply anddemand for heat and electricity in an entire residential building is controlled by an integrated control system. When a demand

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Isogo Smart House Demonstration Project A 24­unit Tokyo Gas employee dormitory consisting of four stories aboveground and a basement. It was also used for the FY2011 Next­GenerationEnergy and Social Systems Demonstration Project and the FY2010 MLITHouse and Building CO  Reduction Pioneer Project.

Housing Complex Smart House Demonstration Project

We are pursuing ways of enabling visual tracking of energy usage in office buildings, factories, and other

facilities by using building energy management systems (BEMS) and smart meters. We are also working to

enhance energy services to enable, for example, optimized operation and control of cogeneration systems,

renewable energy, air conditioners, and boilers in order to reduce energy consumption and CO2 emissions

at customers' sites.

response signal is received from the local energy management system during peak load periods, the system tells thebuilding's ENE­FARM fuel cells to maximize output. At the same time, individual households are asked to conserve electricityby the home energy management system.

2

Promotion of Smart Office Buildings and Factories

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Schematic of an Energy Smart Commercial Building

Visual tracking of energy use by TG Green Monitors

The TG Green Monitor service provides data on energy use measured at the customer's end by displaying

it using easily understood graphs and other visual aids. Customers access the service via a special section

of our website. Providing customers with an easy means of tracking their energy usage is an effective way

of encouraging them to save energy.

Typical TG Green Monitor Screenshot

Saving energy and electricity at commercial buildings with Raku­Sho BEMS

Raku­Sho  (Easy Conservation) BEMS ("the winning way  to save energy")  is a service  launched  in  fiscal

2013 by which Tokyo Gas monitors customers' equipment and energy usage to help them save energy and

electricity. This system centrally manages the operation of electrical  facilities (air conditioning, ventilation,

lighting,  etc.)  and  gas  equipment  (GHPs,  natural  chillers,  boilers, Genelight,  etc.)  at  primarily  small  and

medium­sized commercial facilities, helping them to save energy and conserve electricity. Control of GHP,

ventilation  systems,  and  other  equipment  has  led  to  energy  savings  at  customer  facilities  (commercial

multi­tenant buildings) where Raku­Sho BEMS is used, reducing gas consumption by approximately 11%

and  electricity  consumption  by  approximately  4%.  Customers  have  also  been  able  to  cut  their  peak

demand by approximately 6% (as of February 2015).

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Typical Energy Savings Achieved by Using Raku­Sho BEMS at a Customer Facility (CommercialMulti­Tenant Building)

Example of a Raku­Sho BEMS System

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Among the types of automobile that are currently commercially viable, Tokyo Gas is working to popularize

the use of clean, low CO ­emitting natural gas vehicles (NGVs). We are also helping to develop the

hydrogen supply infrastructure to assist the spread of fuel cell vehicles, which emit no CO  at the

combustion stage, in order to diversify fuel use.

There  are  presently  about  45,000  NGVs  on  Japan's  roads  (as  of  March  2016),  and  their  numbers  are

steadily growing. In fiscal 2015, a further 410 NGVs (primarily trucks and garbage trucks) appeared on the

roads in our service area alone. As of the end of March 2016, there were 16,205 NGVs in operation in our

service area.  In addition,  there were 76 natural gas stations  (including 13  fueling stations used solely by

buses or delivery vehicles) in our service area.

Number of NGVs in Use (in Tokyo Gas's Service Area)

Environmental friendliness of NGVs

As NGVs use natural gas as fuel instead of diesel or gasoline, they emit almost no black smoke or SOx. In

terms of NOx emissions, the newest NGV models even clear the future emission regulations introduced in

October 2016, considered the world's most stringent. They produce about 10%­20% fewer CO  emissions

than gasoline vehicles and are receiving positive coverage as environmentally friendly vehicles.

2

2

Popularization of NGVs

2

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New long­range heavy­duty CNG truck launched (Isuzu Motors Limited)

NGVs' environmental  friendliness, cost performance, and superiority  in  terms of  improved energy

security make them a highly viable alternative to gasoline vehicles, and NGV cargo trucks, buses,

garbage trucks, vans and other vehicles are already in widespread use on urban roads. Until now,

however, almost all long­distance inter­city road haulage has still used vehicles running on diesel. In

light of the need to diversity fuel use to improve energy security, Isuzu Motors Limited in December

2015 unveiled a new heavy­duty NGV truck model. This means the medium­ and light­trucks used

on urban  roads will  now be  joined by heavy­duty  trucks  for  long­distance  inter­city haulage,  thus

enabling CO  emission and cost reductions throughout the logistics sector.

Development of the Hydrogen Supply Network

Construction and operation of hydrogen stations

We  are  building  and  operating  hydrogen  stations  and  contributing  to  the  development  of  the  hydrogen

supply  infrastructure  in  order  to  promote  wider  use  of  fuel  cell  vehicles.  Our  goal  is  to  reduce  carbon

emissions and diversify fuels in the transportation sector.

Having previously built and operated two hydrogen stations (one in Senju and another in Haneda) for R&D

and demonstration purposes, we began building our first hydrogen stations for ordinary commercial use in

fiscal 2013. The first to be completed was the Nerima Hydrogen Station, which became the Kanto region's

first  commercial  hydrogen  station  when  it  opened  in  December  2014.  It  was  followed  by  the  Senju

Hydrogen  Station,  which  was  repurposed  for  commercial  use  in  January  2016.  One  month  later,  in

February 2016, we opened our first hydrogen station in Saitama Prefecture, the Urawa Hydrogen Station.

The Nerima Hydrogen Station  uses  an  "offsite"  system  for  receiving  hydrogen  produced  elsewhere  and

supplying  it  to  fuel  cell  vehicles  onsite.  Our  Senju  and  Urawa  stations,  on  the  other  hand,  are  "onsite"

stations that supply fuel cell vehicles with hydrogen produced onsite from city gas.

NOx/PM Limits

Diesel limits are for diesel vehicles weighing over 3.5 tons GVW.✽

2

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Nerima Hydrogen Station Senju Hydrogen Station Urawa Hydrogen Station

From city gas to hydrogen supply (an onsite hydrogen station)

Taking advantage of city gas's  low CO  emissions and  limited  impact on  the environment, Tokyo Gas  is

reforming it to generate hydrogen.

Development of hydrogen technologies

Tokyo Gas  is  pursuing R&D on  hydrogen  stations  for  supplying  hydrogen  fuel  to  fuel  cell  vehicles  as  a

participant in the FY2013­17 research and development project on hydrogen utilization technology run by

the New Energy and Industrial Technology Development Organization (NEDO). Through this program, we

are  investigating  methods  of  controlling  the  quality  of  hydrogen  fuel  dispensed  to  fuel  cell  vehicles,

assessing measurement accuracy when  refueling, and studying ways of  refueling  fuel cell vehicles other

than passenger cars  (i.e., buses and motorcycles). We are also developing  industry guidelines on  these

methods and are working to have them incorporated into international standards. We are further exploring

efficient ways to run commercial hydrogen stations and to reduce maintenance costs.

Refueling a Toyota MIRAI FCV

2

A device for cooling hydrogen to prevent the temperature in an FCV's fuel tank from rising during refueling.✽

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EneLook remote control

HEMS terminal

We provide lifestyle solutions, including means of "visualizing" energy use and approaches to saving

energy, to enable our customers to make smarter use of energy in their everyday lives.

"Visualization" of Energy Usage

The meter reading slips distributed every month to customers' homes indicate their gas consumption at the

same time a year before so that they can compare it with their current usage. Customers can also check

their  monthly  gas  and  electricity  bills  and  usage  online  by  accessing  the  myTokyoGas  service,  which

displays  their  data  in  an  easy­to­understand  graph. We  also  provide ways  of  better  "visualizing"  energy

usage through technologies such as the EneLook remote control, which displays the gas and water used

by home water heaters, to enable customers to keep a visual track of their energy use. Tokyo Gas's high­

efficiency  Eco­JOES  water  heaters  with  latent  heat  recovery  come  with  EneLook  remote  control  as  a

standard feature, and we are equipping all our new products with eco­mode functionality to help customers

conserve water and energy. Looking ahead, we aim to promote energy­saving, low­carbon behavior by our

residential customers by enabling them to keep a visual  track of  their usage of all  forms of energy  in the

home,  including  gas  and  electricity,  by  incorporating  the  results  of  our  real­world  trials  of  home  energy

management systems (HEMS).

Energy­Saving Lifestyle Solutions

We provide a number of publications and services to help customers make smarter use of energy and lead

greener lifestyles. These include The Ultra Energy Saving Handbook, which is full of ideas on how to save

energy, and our eco­cooking classes, which teach people how to both cook and eat greener. At our Gas

Science Museum, we have exhibits and programs  that engage children  through all  five  senses  to  teach

them about energy and the environment in an enjoyable way. Visitors are encouraged to think about how

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The Ultra Energy SavingHandbook

Eco­cooking class

Gas Science Museum "The Save the Earth Best BalanceChallenge!" exhibit teaches visitorsabout how energy sources can becombined in an environmentally friendlymanner

Tokyo  Gas  is  a  member  of  the  Lifestyle  Creation

Workshop  (an  organization  of  experts  and  housing­

related  groups  organized  by  the  Japan  Gas  Energy

Promotion  Council)  and  the  allied  Energy  Saving

Behavior  Workshop.  In  addition  to  researching  and

surveying ways of popularizing energy­saving behavior,

we  are  developing  easy­to­disseminate  resources  to

effectively  promote  energy­saving  behavior  among

home­related businesses and ordinary consumers.

The  resources  we  have  developed  to  date  include

"green  action"  playing  cards  (which  provide  a  simple

introduction  to  energy­saving  behavior  through  card

games),  a  home  improvement  board  game  (which

demonstrates  the effects  that  home  improvements  can

have as  players  progress  through  the  game),  and The

Energy  Saving  Starter  Book  (an  instructor's  textbook

with worksheets for use when incorporating the topic of

energy­saving  behavior  into  school  lessons).  We  are

working to promote the use of these resources, and will

"Green action" playing cards with tips on howto save energy

Home improvement board game

they can use and choose energies in an environmentally friendly way in their everyday lives, and what they

can do in practice to protect the environment at the local level.

Research on effectively promoting energy­saving behavior

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work  to  assess  how  their  use  can  affect  every­day

behavior.

The Energy Saving Starter Book

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Natural gas drilled overseas is liquefied and transported by carrier in the form of LNG at a temperature of

­162 °C. Tokyo Gas produces city gas at  its  terminals  in Negishi, Sodegaura, Ohgishima, and Hitachi  for

supply via a network incorporating mutual backup arrangements.

Little energy is used in the process of making city gas from LNG, and energy efficiency at the production

stage  is at  least 99%. As city gas  is supplied directly  to where  it  is used  in gas  form, energy  loss during

production and supply is negligible.

We are making even further efforts to conserve energy by, for example, using the cold energy of LNG.

Ohgishima LNG Terminal

High Efficiency of the City Gas System

One kilogram of ­162 °C LNG has sufficient cold energy to freeze 2.5 kg of water. We are using this cold

energy  at  various  temperature  levels  for  applications  including  power  generation,  cold  storage,  and  the

production of dry ice. In all, 2,364 thousand tons was used in this way in fiscal 2015. At the Negishi LNG

Terminal, about 35% of the electricity used is generated from cold energy. In fiscal 2015, 29,441 MWh was

generated from cold energy, resulting in a CO  emission reduction of about 20,000 tons.

Utilization of LNG Cold Energy

2

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Purpose of use LNG used for cold energy (1,000 tons)

Supplied to subsidiaries and affiliates 852

Electricity generated using cold energy 724

BOG✽ processing 788

Total 2,364

Cold Energy Use in FY2015

Boil­off gas. This is gas generated by the vaporization of LNG in tanks caused by heat leaks from the atmosphere.✽

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Tokyo Gas Group has  to date contributed  to preventing global warming by actively expanding  its use of

renewable energy sources,  such as wind power,  to generate electricity  to  supplement  its high­efficiency,

environmentally  friendly  natural  gas  power  plants.  Now  that  the  electricity  retail  market  has  been

completely  liberalized and we are also an electricity retailer, we will strive  to  increase procurements  from

high­efficiency  thermal  and  renewable  power  plants  as well  in  order  to  lower  our  emission  factor  at  the

retail stage. We have been a participant in the Electric Power Council for a Low Carbon Society since its

inauguration, and through our involvement we will work with other electricity utilities to build a low carbon

society.

Tokyo Gas currently has stakes in power plants operated by Tokyo Gas Baypower Co., Ltd. (100,000 kWh,

wholly owned by Tokyo Gas, 50% maximum efficiency on an LHV basis at the generating end), Tokyo Gas

Yokosuka Power Co., Ltd. (240,000 kW, 75% owned by Tokyo Gas, 51% maximum efficiency), Kawasaki

Natural Gas Power Generation Co., Ltd. (420,000 kW x 2 units, 49% owned by Tokyo Gas, 58% maximum

efficiency),  and  Ohgishima  Power  Co.,  Ltd.  (400,000  kW  x  3  units,  75%  owned  by  Tokyo  Gas,  58%

maximum efficiency).

In addition  to  these sources,  in September 2014 we decided  to  receive  the entire output  (approximately

1,200,000 kW) of the Moka Power Station, which Kobelco Power Moka Inc. (a wholly owned subsidiary of

Kobe Steel, Ltd.) is preparing to build in Moka, Tochigi Prefecture. (The plant's first unit will be completed in

late 2019, and its second in early 2020.)

These plants are all highly energy­efficient natural gas power plants that generate electricity using cutting­

edge gas turbine combined cycle technology.

Using  the  electricity  generated  by  these  newly  built  high­efficiency  power  plants  in  place  of  electricity

produced by less efficient existing thermal power plants will help reduce our CO  emissions by the resulting

difference in CO  emissions per unit of electricity generated.

Ohgishima Power Station now

Gas turbine combined cycle technology

Combined  cycle  power  plants  that  use  liquefied  natural  gas  (LNG)  as  fuel  achieve  higher  generating

efficiency by using the heat captured from a gas turbine to convert water to steam, which is then recovered

to drive a steam turbine that also generates electricity.

Cutting­Edge High­Efficiency Natural Gas Power Plants

2

2

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Steps in the Power Generation Process

The Group is expanding its procurements of electricity from renewable sources in order to contribute to the

development of a low carbon society.

Wind power plants' generating costs have come down in recent years, thanks in part to increases in scale,

and they are increasingly expected to become one of the most important sources of renewable energy. We

built  a  wind  power  plant  with  an  output  of  1,990  kW  at  our  Sodegaura  LNG  Terminal  and  have  been

generating wind power since 2005. The Sodegaura wind power  facility was decertified under  the Act on

Special  Measures  Concerning  New  Energy  Use  by  Operators  of  Electric  Utilities  ("RPS  Act")  in  March

2013,  and  certified  instead  as  a  facility  under  the Act  on Special Measures Concerning Procurement  of

Electricity from Renewable Energy Sources by Electricity Utilities ("FIT Act"). Electricity generated is sold to

ENNET Corporation, an electricity retailer.

Our  second  venture  into  the  wind  power  business  began  with  the  announcement  in  April  2011  of  our

investment in Shonai Wind­Power Generation Co., Ltd. Shonai Wind­Power Generation was established in

December 2003, and  it now operates  two wind power plants  in Yamagata Prefecture,  including  the Yuza

Wind Power Plant (operational since December 2010), which have a combined power generating capacity

of 15,910 kW and estimated annual electricity output of 37 GWh.  In February 2016, we  teamed up with

Fukushima Prefecture  to  jointly  submit  an  environmental  impact  statement  for  a wind  power  generation

project in Fukushima to the Ministry of Economy, Trade and Industry and the relevant local governments,

and  we  are  now  surveying  wind  conditions  and  other  factors  in  preparation  for  implementing  the

provisionally named "Fukushima Coastal Wind Power Generation Initiative."

Promotion of Renewable Energies

Wind power facility at Sodegaura LNG Terminal

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In other ventures, on January 19, 2015, we signed a power purchasing agreement with Kuroshio Furyoku

Hatsuden K.K., and we have been purchasing approximately 12,000 kW of electricity under this agreement

since April 2015. This electricity is generated by two plants operated by Kuroshio Furyoku Hatsuden in the

Kanto region: the Choshi Takada­cho Wind Power Plant, which entered service in 2006 and has one 1,990

kW  turbine,  and  the Shiishiba Wind Power Plant, which entered  service  in 2009 and has  five 1,990 kW

turbines.

Looking beyond wind power  generation, we plan  to  investigate  biomass power  generation  (which  has a

high  capacity  factor),  abundant  photovoltaic  power,  and other  renewable  power  sources  to  continue our

contribution to the creation of a low carbon society.

Yuza Wind Power Plant

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Tokyo  Gas  Group  operates  district  heating  and  cooling  plants  (including  small­scale  spot  heat  supply

centers) in 43 districts. Steam and heated and chilled water are produced by various natural gas systems,

including gas cogeneration systems, absorption chillers, and boilers, and are supplied within specific areas.

To increase energy efficiency, we are working to fine­tune operation of these facilities and make them more

efficient.

Makuhari District Heating and Cooling Center

We are upgrading  the Makuhari District Heating and Cooling Center's heat source equipment  in order  to

transform the facility from a conventional district heating and cooling center that simply supplies heat into a

"community energy center" that also generates electricity in order to help conserve energy and reduce CO

emissions  throughout  the  area  as  a  whole.  Using  the  latest  high­efficiency  large­scale  gas  engine

cogeneration system (with a total capacity of 15.7 MW), electric turbo chiller, boiler, and absorption chiller,

we have achieved  the "best mix" of heat and power supply systems,  resulting  in a 24% reduction  in  fuel

consumption and a 24 thousand ton reduction in CO  emissions.

Initiatives at the Makuhari District Heating and Cooling Center

2

2

Schematic of Makuhari District Heating and Cooling Center

Only when demand cannot be met by the cogeneration system.✽

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DHC service to Makuhari Shintoshin area

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We are making our offices more energy efficient in both tangible and intangible ways. Even as we are

making tangible changes like installing gas cogeneration systems (gas CGS) and high­efficiency lighting

equipment, we are also taking less tangible steps to conserve energy by encouraging our employees to

adopt "cool biz" and "warm biz" dress appropriate to the seasons, maintaining room temperatures at more

appropriate levels, and generally raising employee energy awareness and ensuring that equipment is used

in more energy efficient ways.

Tokyo Gas  has  long  been  interested  in  saving  energy  at  our  offices. We  equipped  our  Hamamatsucho

Head Office Building with  its first gas cogeneration system as far back as 1984, and upgraded it  in fiscal

2008 to take advantage of the latest cogeneration technology,✽ with the new system entering operation in

April 2009. As a result, our head office building CO  emissions have been cut by some 1,400 tons annually.

When all­out efforts were needed to save power during the summer of 2011 following the Great East Japan

Earthquake, all the Group's gas CGSs were put to work and achieved significant power savings.

In fiscal 2010, Tokyo Gas introduced a set of design guidelines for buildings that call attention to improving

energy  conservation,  seismic  safety,  and building  lifespans. The new guidelines have been  incorporated

into improvement plans for buildings owned by Tokyo Gas Group.

We are installing more efficient lighting and air­conditioning equipment at our offices and facilities, focusing

on those where the greatest energy savings can be achieved. On the lighting front, we are installing high­

efficiency LED and HF­ballast  fluorescent  lighting. Significant savings have also been achieved  in  recent

years by using LED lights instead of mercury lights for outdoor lighting and in the experimental area at the

Senju Techno Station's B Block.

Paying  particular  attention  to  buildings'  outer  skins,  we  retrofitted  a  number  of  the  windows  in  our

Hamamatsu Head Office Building with double glazing in fiscal 2013.

Effective Use of Energy by Gas Cogeneration Systems

2

Upgraded gas CGS: 930 kW­class gas engines x 2, total efficiency of 72% (38% power generation, 32% waste heat capture)✽

Making Old Buildings Both Energy Efficient and EnvironmentallyFriendly

Saving Energy by Improving Facilities

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Tokyo Gas is working with the owners of the buildings it occupies, their facility managers, and the specific

departments  that  are  tenants  in  these  buildings  to  implement  effective  ways  of  saving  energy.  These

measures  include  the  establishment  of  energy  conservation  committees, management  of  lighting  levels,

and maintenance of humidity and temperature at appropriate levels.

Since  fiscal  2014,  we  have  also  been  installing  displays  in  some  of  our  buildings  to  make  it  easier  to

visualize energy usage and raise awareness of energy conservation.

Raising energy conservation awareness through "visualization"

A display panel has been installed in the foyer of our Hamamatsucho Head Office Building to present visual

data  on  actual  electricity  usage  and  information  on  energy  conservation.  Meanwhile,  our  Hon­Chiba

Building is supplying online data on energy usage provided by the Raku­Sho (Easy Conservation) BEMS

service, along with analyses of the results, to other Tokyo Gas offices.

A  display  has  also  been  installed  at  our  recently  retrofitted  Hiranuma  Building,  and we  are  refining  the

content presented to reflect the results of questionnaire surveys of users there and at our head office and

Hon­Chiba buildings.

Alongside  these  ongoing  activities,  we  also  organize  a  power­saving  campaign  every  summer  to

encourage employees to save electricity. In fiscal 2015, the campaign slogan was "Little Changes Lead to

Summer Power Savings," and the result was a 1% reduction from a year earlier in electricity usage at our

office buildings.

Motion sensitive lighting Fluorescent LED lighting

Saving Energy by Improving Use

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Data visualization at our head office building Summer power­saving campaign

Eco­driving information (such as information on avoiding idling) is provided to employees by instructors and

through our intranet and other channels. We also offer eco­driving courses, and studies of fuel consumption

before and after taking these courses shows that drivers become at least 10% more fuel efficient.

Introduction of fuel cell vehicles

We  are  adopting  the  use  of  low­emission  and  fuel­efficient  vehicles  in  order  to  reduce  nitrogen

oxides (NOx), particulate matter (PM), and CO  emissions produced when driving. In fiscal 2014 we

introduced two fuel cell vehicles.

Promotion of Eco­Driving

Explaining the keys to eco­driving

2

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Green Procurement of Energy

The Green  Power  Certificate  System  is  a  system  for  turning  electricity  generation  using  natural  energy

sources  (such as biomass and wind power)  into  "environmental value"  that can be  traded  in  the  form of

"green  power  certificates"  in  order  to  promote  wider  adoption  of  natural  energy  sources,  energy

conservation, and reductions in CO  emissions. We have purchased green wind power certificates from the

Japan Natural Energy Company Limited since April 2002, and allocate them to our corporate museums and

offices. We are making a positive contribution to the fight against global warming at the local level as well,

and  since  April  2007  have  been  a  "Yokohama­Green  Partner"  in  Yokohama's  Hama Wing  wind  power

project.

Carbon offsetting partner for the G7 Ise­Shima Summit and Intercity Baseball Tournament

Tokyo Gas uses reductions in greenhouse gas emissions accredited under the J­Credit Scheme✽1

administered  by  the  Japanese  government  to  offset  carbon  emissions✽2  from  events  within  and

outside the company in order to better contribute to the environment. For example, we provided 100

tons of  J­Credits  for  the G7  Ise­Shima Summit  in May 2016,✽3  and 250  tons  for  Japan's  annual

Intercity Baseball Tournament in July.

2

Green Power Purchases and Use in FY2015

Facilities using green power Electricity (kWh)

Gas Science Museum 132,000

Earth Port (Tokyo Gas Kohoku New Town Building) 112,000

Hiranuma Building 112,000

Yokohama Showroom 94,000

Yokohama Service Branch 38,576

Ohgishima Power 1,000

CSR Report 2015 (Japanese and English print editions) 3,400

The Ultra Energy Saving Handbook (print edition) 600

Tokyo Gas buildings, Tokyo Gas Senju property (Tokyo specified anti­globalwarming facility)

450,000

Total 943,576

This is a program by which reductions and sequestrations of greenhouse gases such as CO  achieved by, forexample, forest management and installing energy­saving equipment are certified by the government as "credits."Credits created under this scheme can be used in various ways, including to attain targets set by commitments forachieving a low carbon society and to offset carbon emissions.

✽1 2

For the Ise­Shima Summit held in Mie Prefecture on May 26­27, 2016, the Ministry of Economy, Trade andIndustry, the Ministry of the Environment, and the Ministry of Agriculture, Forestry and Fisheries (which together runthe J­Credit program) partnered with the Ministry of Foreign Affairs to enable the buying and selling of carbonoffsets by the public and private sectors through the J­Credit Scheme and related arrangements. Enterprises andlocal governments were invited to take part in the project. This public­private partnership on carbon offsettingdemonstrated to the international community Japan's positive commitment to tackling climate change, and alsocontributed to fostering public understanding of and involvement in action against climate change in Japan.

✽2

Once CO  emissions at the Summit have been confirmed, offset credits up to the amount offered by each companywill be finalized.

✽3 2

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Nagano Tokyo Gas Forest was opened in Kitasaku­gun, Nagano Prefecture, by Tokyo Gas as a means of

engaging in forest development and conservation activities in order to contribute to the fight against global

warming in fulfillment of its duties as an energy supplier. The forest celebrated its 10th anniversary in 2015,

and in the 10 years since its inception some 300,000 saplings have been planted and 40,000 thinned out to

promote  forest  regeneration.  The  plan  for  the  future  is  to  clearly  quantify  how  much  CO   the  forest

sequestrates so that this can be offset against emissions from other business activities using the J­Credit

Scheme in order to promote conservation activities.

In  addition,  we  are  supporting  the  preservation  and  expansion  of  precious  green  space  in  the  Group's

service areas through the Tokyo Gas Tree Planting Project.

Nagano Tokyo Gas Forest administration building, a mountain lodge called Ohisama House Trees are thinned, pruned, and otherwise maintained to conserve the forest, while the forest'sadministration building, a mountain lodge called Ohisama House, has been designed to makemaximum use of natural energy sources (such as wind, sun, and water to generate power and a pelletstove for heating).

Tokyo Gas Tree Planting Project Trees have been planted along a section ofTokyo Metropolitan Route 306 (Oji Senju Minami­sunamachi) through a donation to the "My Tree"program organized as part of the TokyoMetropolitan Government's Green TokyoFundraising Campaign.

2

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Practicing the 3Rs (reduce, reuse, and recycle) is essential to creating a resource­saving society. The most

important of these is controlling the generation of waste.

In addition to limiting emissions by, for example, producing zero emissions at production plants (defined as

a  final  disposal  rate  of  less  than  0.1%)  and  reducing  the  amount  of  soil  excavated  during  gas  pipeline

construction, Tokyo Gas Group practices the 3Rs at every stage of its business activities, including reusing

gas meters  and  recycling used gas pipes and gas appliances,  in  order  to  recycle  and  reuse waste and

other resources.

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Tokyo Gas Group is working to achieve zero waste emissions (defined as a final disposal rate of less than

0.1%) at not only its city gas production facilities, but also at power plants, gas appliance factories, district

heating and cooling centers, and plants making products such as systems that use the cold energy of LNG.

In fiscal 2015, total waste emissions came to 1,291 tons, the amount disposed of by landfill was 18 tons,

and the final disposal rate was 1.3%.✽

The Group generates waste  (mostly  construction  rubble and sludge,  scrap metal,  and wood chips) as a

result of activities performed under direct contract for gas utilities (such as the construction of gas facilities),

gas  pipeline  work  at  customers’  sites,  installation  of  air  conditioning,  space  heating,  and  water  heating

systems, and home improvement work. In fiscal 2015 we generated 144,594 tons of waste, 96% of which

was recycled.

Tackling Waste Emissions from Production Facilities

Excluding asbestos and other non­recyclable industrial waste.✽

Tackling Waste Emissions from Construction Work

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We pursue a range of activities in the gas supply field to contribute to the development of a resource saving

society. These include 3R activities to deal with emissions of byproducts during gas pipeline work, and the

reuse and recycling of gas meters.

Roads must be dug up when gas pipelines are laid, producing emissions of excavated (residual) soil and

asphalt concrete lumps. The Group takes a "3R" approach (reuse, reduce, and recycle) to decreasing the

amount of excavated soil by, for example, shallow­laying of pipes in narrow trenches and use of non­open­

cut construction methods, as well as by reburying excavated soil and making  increased use of  improved

soil and  recycled  road surface materials. When  it  is necessary  to  re­excavate  the same  location, we are

using  a  new  kind  of  temporary  backfill  called  "Eco­balls,"  and  wider  use  is  being made  of  other  newly

developed materials and construction methods as well.  In  fiscal 2015, 1.00 million tons of excavated soil

was disposed of, which is 22.3% of the 4.49 million tons (estimated baseline disposal) that would have had

to  be  disposed  of  had  conventional  methods  been  used.  As  a  result,  our  use  of  trucks  to  transport

excavated soil was also reduced, cutting CO  and NOx emissions.

Trend in Reduction in Emissions of Excavated Soil Relative to Estimated Baseline

Reuse, Reduction, and Recycling of Excavated Soil

2

Eco­ball temporary backfill Pipeline work using Eco­balls

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Increased  recycling  of  used  gas  pipes  removed  when  pipes  were  replaced  enabled  us  to  once  again

achieve  a  100%  recycling  rate  in  fiscal  2015. We  established  a  system  for  recycling  polyethylene  (PE)

pipe✽ scrap and excavated sections of pipes in fiscal 1994, and in fiscal 2015 recycled a total of 235 tons

as raw materials for use in the gas business and for making stationery. In the gas business, these materials

are used to make items such as labels for customers' gas meters explaining how to restart the meters after

an emergency. Regarding steel and cast­iron pipes, we collected a total of 5,003 tons in fiscal 2015, and

the entire amount was recycled as raw materials for use by electric furnace manufacturers and other users.

Used PE Gas Pipe Recycling Process

Tokyo Gas has led the gas industry, and other industries, in its reuse of gas meters ever since it first began

installing them. 

The  gas meters  installed  at  customers'  sites  are  replaced  before  their  certified  life  (normally  10  years)

expires. We collect the removed meters, replace all expendable parts, and recertify them, allowing them to

be used  for  three cycles  (30 years)  in  total. All  replaceable parts have been assessed  for durability and

design changes made where necessary, with  the result  that now almost all  reusable parts are reused.  In

Recycling of Used Gas Pipes

PE gas pipes are highly earthquake and corrosion resistant, and were rapidly adopted following the Great Hanshin­AwajiEarthquake.

Gas Meter Reuse and Recycling

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fiscal 2015, 553 thousand (46%) of the 1,215 thousand meters newly installed were reused, enabling us to

reduce the amount of waste generated by 2,302 tons. 

Meters  that  have  completed  three  cycles are  recycled  through our  own  recycling  channels and used as

material for new products by electric furnace manufacturers and other companies.

Steps in Reuse of Gas Meters

Gas meter

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Tokyo Gas Groups' offices and other facilities produce all kinds of industrial waste, including waste plastic

from containers and packaging and waste generated  in  the course of developing  technologies, providing

education and practical training, and performing maintenance work at customers' sites. The Group strictly

sorts and stores waste, which it then ensures is recycled or properly disposed of. In fiscal 2015, our offices

and other facilities produced a total of 3,431 tons of industrial waste (85% of which was recycled). We fell

short of the target set in our Resource Recycling Guidelines (revised in fiscal 2014), and we will redouble

our recycling efforts to meet this goal.

Our  offices  are  working  to  reduce  their  consumption  of  copy  paper,  cut  emissions  of  waste  paper,  and

recycle more used paper. Following the attainment of a 95% waste paper recycling rate by the Group as a

whole  in  fiscal 2013, our Environmental Protection Guidelines were  revised  in  fiscal 2014  to expand  the

scope of waste management  to cover general waste  (such as  food waste) so as  to  increase our  rate of

recycling of waste other than waste paper. As a result, the Group as a whole produced only 3,143 tons of

general waste in fiscal 2015, meeting its target with a recycling rate of 78%.

Paper Recycling by Tokyo Gas

In fiscal 2003, Tokyo Gas launched a program to collect old documents and waste paper and have them

turned into recycled paper for our own use. In fiscal 2015, we purchased 537 tons of paper that had been

recycled  in  this  way,  and  used  it  to  produce  sales  pamphlets,  leaflets,  calendars,  reports,  and  other

literature.  Unlike  ordinary  recycled  paper,  the  paper  that  we  use —which we  call  "Tokyo Gas Recycled

Paper"— is made from materials both provided (i.e. waste generated) and then purchased back by us. This

independent program observes green purchasing practices and  is designed  to promote  the "greening" of

the paper product  chain. We work with a wide  range of  companies at  every  stage of  the paper product

lifecycle,  including  waste  paper  haulers,  waste  paper  wholesalers,  paper  wholesalers,  and  paper

manufacturers  at  the  waste  paper  distribution  through  to  the  recycled  paper  production  stages,  and

production  companies  and  printing  firms  at  the  printing  stage.  Internally  as  well,  all  of  our  employees

carefully separate waste to make it possible for us to provide high­quality waste paper for recycling.

Tokyo Gas Recycled Paper is certified to be made from legally sourced lumber that has been traced from

the felling stage.

In the case of printed materials that cannot be made from Tokyo Gas Recycled Paper, we support the use

of sustainable forest resources by recommending the use of FSC­certified paper in order to ensure that it

has  been  sourced  in  an  environmentally  friendly  manner  (by,  for  example,  paying  attention  to  forest

conservation).

Tackling Waste Emissions at Offices

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Careful sorting of wastepaper Collected waste paper

How Tokyo Gas Waste Paper is Recycled

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We promote the reduction, reuse, and recycling of materials at customers' sites in a variety of ways. These

include reducing waste emissions by making our products more environmentally  friendly  from the design

stage, and collecting used appliances and parts via our own collection channels.

Since  August  1994,  Tokyo Gas  has  operated  its  own waste  collection  and  recycling  system,  called  the

Saving & Recycling  Innovative Model System (SRIMS). This system enables us  to reduce the  impact on

the environment and cut costs by collecting waste at the same time we deliver gas appliances, parts, and

piping materials to partner companies. Under SRIMS, we are working to collect used gas appliances and

waste materials produced when equipment is replaced or gas installation or renovation work is carried out

at customers' sites. 

In fiscal 2015, we collected 8,936 tons of waste and recycled 8,367 tons.

Tokyo Gas­branded residential gas air conditioners and clothes dryers are subject to the Act on Recycling

of Specified Kinds of Home Appliances ("Home Appliances Recycling Act"). They are  therefore collected

and recycled by a consortium of companies (known as the "A Group")  led by Panasonic Corporation and

Toshiba Corporation. 

In terms of gross weight, 90% of our air conditioners and 88% of our clothes dryers were recycled in fiscal

2015 (exceeding the respective legal minimums of 80% and 82%).

SRIMS for Used Gas Appliances, Etc.

How SRIMS Works

Action under the Act on Recycling of Specified Kinds of Home Appliances

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Corrugated cardboard boxesdesigned to use less cushioning

Shrink wrap packaging Returnable containers

In  order  to  reduce  emissions  of  waste  containers  and  packaging  at  customers'  sites,  we  meticulously

collect unwanted containers and packaging generated when gas appliances are sold and installed by our

partners. 

Containers and packaging collected from customers' sites are recycled mainly via SRIMS. In fiscal 2015,

approximately 697 tons of corrugated cardboard and 13 tons of expanded polystyrene were collected and

recycled  in  their  entirety. We  are  also  reducing  the  quantity  of  containers  and  packaging  used  for  gas

appliances  in  several  ways.  These  include  reducing  the  amount  of  cushioning  required  by  redesigning

corrugated  cardboard packaging,  using  less  corrugated  cardboard by employing  shrink wrap packaging,

and using returnable packaging (tops and bottoms that can be collected and reused).

Action under the Home Appliances Recycling Act

UnitFY2015

Air conditioners Clothes dryers

Number received at designated collection points Number 14,863 6,710

Number transported to processing plants Number 14,862 6,707

Recycling Number recycled Number 14,824 6,649

Weight undergoing recycling Tons 615 258

Weight post recycling Tons 559 228

Recycling rate % 90 88

Fluorocarbons Weight recovered kg 9,646 ­

Weight destroyed kg 2,238 ­

In  addition,  specified  residential  waste  appliances  collected  from  customers  by  partner  retailers  are

properly  transported  to  specified  collection points  in  accordance with  our Saving & Recycling  Innovative

Model System (SRIMS).

Reduction of Waste Containers and Packaging

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Biodiversity Conservation and Sustainable Use

Many species are facing imminent extinction due to human activities, and natural ecosystems around the

world  are  being  disrupted  at  an  alarming  rate.  Tokyo  Gas  Group  considers  the  realization  of  rich

ecosystems  to  be one of  our  important  business bases  in  order  to  protect  the global  environment while

sustaining  our  business,  and  has  formulated  its  Guidelines  for  Promoting  Biodiversity  Conservation.

Specifically, we are monitoring conditions along each value chain to mitigate their  impact on ecosystems,

practicing  forest  conservation at  our  own Nagano Tokyo Gas Forest,  and engaging  in  a  variety  of  other

initiatives.

In fiscal 2016, we added an item on biodiversity conservation to our Environmental Policies, and we will be

both ramping up our efforts in this area and adopting a more global approach to protecting biodiversity as

our own business activities become more globalized.

Impacts on biodiversity and responses along LNG value chain (PDF: 895KB)

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We are monitoring conditions and working to conserve biodiversity at every stage of our value chains, from

procurement of natural gas to transportation, production, and supply.

Efforts being made at the site of procurement

The  companies  from whom we procure  LNG  (liquefied  natural  gas)  are  taking  a  variety  of measures  to

protect  biodiversity  in  their  gas  fields,  including  protection  of  endangered  wildlife,  forest  conservation,

afforestation, and protection of marine life. In the case of our LNG project in Indonesia, for example, action

is  being  taken  to  protect  an  endangered  species  of  painted  terrapin  called  the  Sea  Tuntung  and  a

mangrove restoration program is also underway.

Immature Sea Tuntung terrapins(Source: KOMPAS.COM­Pertamina dan YSCLI Selamatkan Tuntong Laut dari Kepunahan)

At our LNG projects in Australia, we are implementing Significant Species Management Plans (SSMPs) to

identify  the  potential  impacts  on  endangered  and  near  threatened  animals,  plants,  and  biocommunities

affected by projects. Under these plans, we not only  identify the processes that may have an impact, but

also  report  on  appropriate  control  methods  and  mitigation  responses  in  the  case  that  impacts  exceed

regulatory limits.

Making LNG transportation more environmentally friendly

Concerns have been raised about  the possible  impact on ecosystems of aquatic organisms contained  in

the ballast water (seawater used to provide additional weight when a vessel is not fully laden) discharged

by vessels at ports when they are loaded with LNG.

Tokyo Gas carriers therefore exchange their ballast water on the open seas to reduce the impact on local

ecosystems.

Procurement

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LNG carrier Hard clams not previously found in Japanesewaters

We  are  creating  more  green  space  at  our  LNG  terminals  at  Sodegaura,  Negishi,  and  Ohgishima  by

allowing vegetation in grassy areas to grow more and cutting back on our use of herbicides. 

We aim  to  create  green  areas  that  blend with  the  local  natural  habitat,  and  to  achieve  this  the  Jumoku

Kankyo  Network  Society  (NPO)  has  been  helping  us  survey  local  plants,  insects,  and  animal  life.  The

results of these surveys are then used to improve our conservation activities in these locations.

Production

Greenification is being promoted at each of theLNG terminals at Sodegaura, Negishi, andOhgishima. (Photo of Negishi LNG Terminal)

Planting activity at one of our terminals. Thetrees are planted by the employees themselves.

Greenification activities at LNG terminals

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We  are  reducing  the  amount  of  excavated  (residual)  soil  produced  by  gas  pipeline  laying  work.  For

example, we  lay pipes  in shallower, narrower  trenches  than used  to be  the norm, and use non­open cut

construction (a method of laying pipelines without digging up road surfaces). 

Holes  are  conventionally  refilled  using  pit  sand.  We  have  reduced  the  excavation  of  pit  sand  by,  for

example, refilling holes with the soil that was excavated from them, using improved soil and recycled road

surface materials as refilling materials, and using a new type of backfill to temporarily refill holes that will be

soon be excavated again.

The animal, insect, and plant life at our terminalsis surveyed with the assistance of the JumokuKankyo Network Society (NPO).

A wide variety of bird species have been found ingreen areas at our LNG terminals. Surveys haveshown the dusky thrush to be a common wintervisitor.

Ecosystem surveys of LNG terminals

Supply

Pipeline construction using non­open­cut methods

The amount of soil excavated is reduced by a method that allows gaspipes to be laid without digging up road surfaces. (The photo shows ashaft through which gas pipes are thrust into place)

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We are planting trees on rooftops and creating "green curtains" at our offices and corporate museums.

Pipeline construction using "Eco­balls," a new type of temporary backfill

Pit sand use is reduced by employing a new kind of temporary backfillcalled "Eco­balls" to refill holes that will soon be excavated again.

Recycling Excavated Soil

Soil generated from gas pipeline work (excavated soil) is processed at thesoil improvement center, and reused as refilling soil. This helps to protectthe ecosystems of mountains and other environments.

Offices

Rooftop greenification at the Gas Science Museum

The museum is used to promote effectivecommunication with customers and localcommunities, including their elementary schools.

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Green curtain of bitter gourd plants at the Kumagaya Building

At our Kumagaya Building, greenery is grown on the walls and outside windows to provide shade andkeep rooms cooler.

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We protect woodland at Nagano Tokyo Gas Forest  (opened  in  2005)  and  conserve biodiversity  through

projects undertaken  in partnership with our  customers  such as  the Donguri  (Acorn) Project and  the  "My

Forest"  Project.  We  also  support  biodiversity  conservation  groups  through  the  Tokyo  Gas  Environment

Support Fund and our involvement in the Keidanren Committee on Nature Conservation.

Conservation of biodiversity at Nagano Tokyo Gas Forest

We engage in ongoing forest conservation work, including thinning and pruning, in order to contribute to the

environment and prevent global warming by developing woodlands. Work is performed in collaboration with

the local Saku Forestry Association, and we also carry out other activities such as thinning as part of our

outdoor  nature  education  program.  In  order  to  help  conserve  biodiversity,  we  are  supplementing  the

coniferous trees that make up most of the forest by planting broad­leaved trees, as these can provide more

accessible  food sources  for bird, mammal, and  insect  life. We are also working  in partnership with  local

NPOs to conduct flora and fauna surveys of the forest.

Timeline of Flora and Fauna Surveys

Survey year Survey details

2007 Mammal fauna survey (confirmed presence of 16 species of mammals)

2008 Flora survey (confirmed presence of 324 species of plants)

2009 Ornithological survey (confirmed presence of 61 species of birds)

2010 Dietary analysis of Japanese marten from fecal remains

2011 Stationary camera survey (confirmed presence of 30 species of wildlife)

2012 Stationary camera survey (confirmed presence of 29 species of wildlife)

2013 Stationary camera survey (confirmed presence of 21 species of wildlife)

2014 Stationary camera survey (confirmed presence of 20 species of wildlife)

2015 Stationary camera survey (confirmed presence of 25 species of wildlife)

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Iris sanguinea Japanese primrose

Japanese badger Family of weasels

Changes in Animals Recorded between 2007 and 2015

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Owl bathing Hare

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We monitor and manage impacts on the environment at every stage of our LNG value chain in order toreduce the impact on the environment.

Tokyo Gas Group Business Activities and Material Balance (FY2015)

Companies included in the data: Tokyo Gas and its 46 consolidated subsidiaries in Japan.(PDF: 24KB) 

Tokyo Gas Group Business Activities and Material Balance (PDF: 152KB)

For city gas production by the Tokyo Gas Group.✽1

Energy usage by the Tokyo Gas Group excluding double­counting due to intra­group supply of heat and electricity.✽2

City gas : Volume of gas sales by the Tokyo Gas Group excluding supply to other gas utilities. Wholesale supply : Volume of gas supplied to other gas utilities. Heat: Includes sales from LNG terminals as well as district heating and cooling center and spot heat supply. Includes intra­group supply. Electric power: Volume of sales of all electric power, including power purchased for business use from other companies andthe market as well as Group power stations.

✽3

CO , CH , NOx: Excludes double­counting due to intra­group supply. Volume of wastewater: Specified wastewater and domestic sewage.

✽4 2 4

PE pipes, Steel and cast­iron pipes: Tokyo Gas on a non­consolidated basis.✽5, 6Gas sales volume according to consolidated financial statements multiplied by emission intensity.✽7

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Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Number of Customers (Note)

thousands 10,855 10,978 11,111 11,263 11,398

Number of ConsolidatedSubsidiaries

companies53 51 51 49 46

Feedstock and Production

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

City gasfeedstock (Note 1)

FeedstockLNG

thousandtons

10,531 10,760 11,057 11,513 11,411

FeedstockLPG

thousandtons

321 368 418 441 438

Production City gassales (Note 2)

millionm 14,160 14,211 14,527 15,358 15,263

Heatsales (Note 3)

TJ3,282 3,282 3,353 3,287 3,251

Powersales (Note 4)

billionkWh 8.27 9.98 9.71 10.61 10.96

Companies included in the data (Tokyo Gas and ConsolidatedSubsidiaries) ✽Companies included in the data.(PDF:24KB)

Number of customers of Tokyo Gas and its consolidated subsidiaries in Japan.Note:

Usage of Energy & Water / Emissions into the Atmosphere & WaterSystems

3

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Energy Usage ✽1,2

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Energyusage

(Note 1) TJ 56,245 62,565 60,457 66,399 68,561

LNG terminals TJ 3,789 3,818 3,894 4,069 3,998

District heatingand coolingcenters

TJ4,559 4,513 4,361 4,167 4,167

Power plants TJ 45,289 51,745 49,733 55,639 57,871

Tokyo Gasbusiness offices,etc.

TJ1,494 1,469 1,453 1,417 1,387

Other groupcompanies

TJ1,681 1,536 1,541 1,490 1,460

(Tokyo Gas non-consolidated)

TJ5,588 5,586 5,638 5,785 5,678

Electricpower (Note 2)

  MWh 543,186 542,724 545,218 593,097 615,419

LNG terminals MWh 289,115 298,742 304,788 334,229 345,227

District heatingand coolingcenters

MWh72,585 76,975 76,446 90,973 94,640

Power plants MWh 16,055 13,263 10,732 8,774 11,407

Tokyo Gasbusiness offices,etc.

MWh55,405 55,022 54,499 52,350 52,372

Other groupcompanies

MWh131,163 118,785 118,673 115,677 112,890

(Tokyo Gas non-consolidated)

MWh350,876 359,707 364,971 391,536 402,357

City gas thousandm3

1,177,796 1,324,428 1,275,444 1,402,022 1,447,012

LNG terminals thousand22,496 20,978 21,378 18,769 14,600

For city gas production by Tokyo Gas Group.Note 1:Volume of gas sales by Tokyo Gas Group including supply to other gas utilities.Note 2:Includes sales volume from LNG terminals, in addition to district heating and cooling center and spot heat supply. Alsoincludes intra-group supply.

Note 3:

Volume of sales of all electric power, including power purchased for business use from other companies and the marketas well as Group power stations.

Note 4:

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m

District heatingand coolingcenters

thousandm3 87,713 85,647 82,570 74,482 73,328

Power plants thousandm3

1,047,873 1,198,427 1,152,267 1,289,852 1,341,099

Tokyo Gasbusiness offices,etc.

thousandm3 17,699 17,149 16,900 16,726 15,969

Other groupcompanies

thousandm3

2,015 2,228 2,328 2,192 2,015

(Tokyo Gas non-consolidated)

thousandm3

45,630 43,542 43,837 40,994 35,990

Heat (Note 2)

  TJ 25 24 31 38 48

District heatingand coolingcenters

TJ105 104 176 203 198

Tokyo Gasbusiness offices,etc.

TJ86 88 89 85 88

Other groupcompanies

TJ205 165 167 158 166

(Tokyo Gas non-consolidated)

TJ102 102 99 94 96

Otherfuels

TJ 4.89 4.62 5.40 5.23 5.80

LNG terminals TJ 0.17 0.18 0.18 0.22 0.68

Tokyo Gasbusiness offices,etc.

TJ0.66 0.29 0.64 0.64 0.60

Other groupcompanies

TJ4.06 4.15 4.59 4.37 4.52

(Tokyo Gas non-consolidated)

TJ0.83 0.81 0.85 0.86 1.28

Fuel forvehicles

Gasoline kL 3,449 3,634 3,571 3,282 3,219

(Tokyo Gas non-consolidated)

kL1,465 1,494 1,461 1,425 1,444

Diesel oil kL 206 243 228 219 208

(Tokyo Gas non-consolidated)

kL35 36 37 35 41

City gas thousandm3

297 237 218 203 175

(Tokyo Gas non-consolidated)

thousandm3

257 201 185 172 142

LPG kL 273 274 295 280 220

(Tokyo Gas non-consolidated)

kL― ― ― ― ―

LNGcryogenicenergy

  thousandtons

2,504 2,487 2,659 2,289 2,364

Cryogenic power thousand

3

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generation tons816 696 796 460 724

Portion sent tosubsidiaries andaffiliates

thousandtons 769 818 821 853 852

BOG treatment,etc.

thousandtons

918 973 1,042 976 788

Water Usage

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Tap waterandindustrialwater

thousandm3

5,273 5,647 6,023 5,751 5,421

LNG terminals thousandm3

1,271 1,460 1,542 1,662 1,457

District heatingand coolingcenters

thousandm3 1,628 1,711 1,597 1,439 1,459

Power plants thousandm3

1,437 1,504 1,890 1,703 1,569

Tokyo Gasbusinessoffices, etc.

thousandm3 554 595 607 572 537

Other groupcompanies

thousandm3

383 376 387 375 399

(Tokyo Gasnon-consolidated)

thousandm3 1,880 2,111 2,192 2,276 2,036

Seawater LNG terminals thousandm3

765,369 791,092 795,227 784,406 773,963

Excludes double counting by intra-group supply of heat and electricity.Note 1:Excludes double counting by intra-group supply.Note 2:

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Emissions into the Atmosphere

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Greenhousegas

CO2

✽1,3

(Note 1) thousandtons ofCO2

2,795 3,154 3,074 3,376 3,479

LNGterminals (Note 2)

thousandtons ofCO2

160 180 200 210 202

Districtheating andcoolingcenters (Note 3)

thousandtons ofCO2 231 225 223 213 211

Power plants

(Note 4)

thousandtons ofCO2

2,297 2,627 2,522 2,823 2,938

Tokyo Gasbusinessoffices, etc. (Note 5)

thousandtons ofCO2

71 72 75 73 71

Other groupcompanies (Note 6)

thousandtons ofCO2

75 76 81 77 75

(Tokyo Gasnon-consolidated)

(Note 7)

thousandtons ofCO2 246 268 290 298 288

CH4 (Note 8) thousandtons ofCO2

equivalent

3 3 4 6 14

NOx   tons 290 264 272 272 302

LNGterminals (Note 9)

tons13 12 14 14 11

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Districtheating andcoolingcenters

tons

61 62 59 53 52

Power plants tons 200 175 182 187 223

Tokyo Gasbusinessoffices, etc. (Note 9)

tons

16 16 17 18 15

(Tokyo Gasnon-consolidated)

tons30 29 32 32 28

Greenhouse Gas Emissions from Feedstock Procurement (Scope 3)

Category Unit FY2012 FY2013 FY2014 FY2015

LNG procured milliontons

12.71 12.80 13.97 13.87

Greenhouse gas (CO2

equivalent) (Note)Extraction million

tons ofCO2

0.56 0.57 0.62 0.58

Liquefaction milliontons ofCO2

5.80 5.84 6.38 5.08

Marinetransport

milliontons ofCO2

1.37 1.38 1.50 1.12

Excludes double counting by intra-group supply. Totaling 3,490 thousand tons (based on adjusted emission factors) forthe Tokyo Gas Group overall.

Note 1:

200 (based on adjusted emission factors)Note 2:210 (based on adjusted emission factors)Note 3:2,938 (based on adjusted emission factors)Note 4:71 (based on adjusted emission factors)Note 5:74 (based on adjusted emission factors)Note 6:286 (based on adjusted emission factors)Note 7:About 570 tons of CH emissionsNote 8: 4

Emissions from facilities that generate soot and smoke specified in the Air Pollution Control Act.Note 9:

Calculated based on greenhouse gas emission intensity throughout the lifecycle, from extraction of natural gas toprocessing and transportation, as analyzed by the LCA approach.

Note:

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FY2012-14 emission intensityExtraction: 0.81 / Liquefaction: 8.36 / Transportation by sea: 1.97 g-CO /MJ, based on gross heating value Source: "Future Forecast for Life Cycle Greenhouse Gas Emissions of LNG and City Gas Type 13A" (Energy and Resources, Volume 28, No. 2, March 2007).FY2015 emission intensity Extraction: 0.77 / Liquefaction: 6.71 / Transportation by sea: 1.48 g-CO2/MJ, based on gross heating value Source: "Study of Life Cycle Greenhouse Gas Emissions of LNG and City Gas 13A" (35th Annual Meeting of the JapanSociety of Energy and Resources, June 2016).

CO2 Emissions and Emissions Reduction at Customers´ Sites

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

CO2 Total amount million tons ofCO2

26.94 27.09 27.67 29.36 28.96

Amount ofreduction relative toFY2011

million tons ofCO2

Base 0.87 1.52 3.29 3.43

Energy Usage and CO Emissions Associated with Cargo Transportation (for Tokyo Gas on aNon-Consolidated Basis) (Scope 3)

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Transportation amount million tons-km

82.91 81.32 93.12 94.59 98.42

Energy usage (crude oilequivalent)

kL3,172 3,109 3,258 3,275 3,354

Energy usage intensity kl/milliontons-km

38.3 38.2 35.0 34.6 34.1

CO emissions tons-CO 8,368 8,181 8,576 8,615 8,810

Emissions into Water Systems

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Wastewater thousandm3

1,187 1,154 1,106 1,116 1,091

LNG terminals (Note 1)

thousandm3

372 274 242 265 287

District heatingand coolingcenters

thousandm3 361 398 321 325 330

Power plants thousandm3

454 483 544 525 474

(Tokyo Gasnon-consolidated)

thousandm 381 284 249 273 296

COD tons 1.7 1.7 1.9 1.9 1.6

LNG terminals tons 1.3 1.4 1.2 1.2 1.2

Power plants tons 0.3 0.3 0.6 0.6 0.5

(Tokyo Gasnon-consolidated)

tons1.3 1.4 1.2 1.2 1.2

2

2

2 2

3

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Conversion Factor, etc.

CO2 Emission Factor

Category Unit FY 2011

FY 2012

FY 2013

FY 2014

FY 2015

City gas (Tokyo Gas 13A) (Note 1)

kg-CO2/m3

2.21

Purchased electricity (average of all powersources) (Note 2)

kg-CO2/kWh

0.384etc.

0.464etc.

0.525etc.

0.530etc.

0.505etc.

Heat (Note 3)

Steam (excluding industrial use),hot water, cold water

kg-CO2/MJ

0.057

Industrial steam kg-CO2/MJ

0.060

Other fuels (Note 3)

Heavy oil A kg-CO2/L 2.71

Diesel kg-CO2/L 2.58

Kerosene kg-CO2/L 2.49

Gasoline kg-CO2/L 2.32

LPG kg-CO2/kg

3.00

Unit Calorific Value

Category Unit FY 2011

FY 2012

FY 2013

FY 2014

FY 2015

City gas (Tokyo Gas 13A) (Note 1)

MJ/m3N 45.00

Data is for wastewater discharges from wastewater treatment facilities and sewage discharges.Note:

Calculated based on the typical composition of city gas (type 13A) supplied by Tokyo Gas (15°C, gauge pressure of 2kPa).

Note 1:

Emission factors from electric power companies, released in accordance with the ministerial ordinance stipulated by theAct on Promotion of Global Warming Countermeasures.

Note 2:

Calculated using the unit calorific value released in accordance with the ministerial ordinance stipulated by the Act onPromotion of Global Warming Countermeasures, and multiplying this amount by the emission factor per unit calorificvalue and by 44/12.

Note 3:

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Purchasedelectricity (Note 2) ✽4

Daytime electricity MJ/kWh 9.97

Nighttime electricity MJ/kWh 9.28

Other than general electricityutilities

MJ/kWh9.76

Heat (Note 2)

Steam (excluding industrial use),hot water, cold water

MJ/MJ1.36

Industrial steam MJ/MJ 1.02

Other fuels (Note 2)

Heavy oil A MJ/L 39.1

Diesel MJ/L 37.7

Kerosene MJ/L 36.7

Gasoline MJ/L 34.6

LPG MJ/kg 50.8

Crude oil equivalent coefficient (Note 2)

kL/GJ 0.0258

City gas calorific value of Tokyo Gas (0°C, 1 atmospheric pressure)Note 1:Act Concerning the Rational Use of Energy (the Energy Efficiency Act)Note 2:

For district heating and cooling centers that sell power using Combined Heat and Power (cogeneration), the amount ofenergy usage is divided between those for heat production and those for power generation using the allocation factorcalculated based on the Act on Promotion of Global Warming Countermeasures. Data for energy used to produce heat isreflected in "District heating and cooling centers," and data for energy used for power generation is reflected in "Powerplants." Data for "Tokyo Gas business offices, etc." does not include energy used for LNG terminals and district heating andcooling centers. "Other group companies" refers to data on group companies excluding district heating and cooling centers,and power plants.

✽1

Some variance in the data listed under different categories may exist since the data has been processed to properly assessthe changes in energy usage intensity for each business activity (such as by reflecting the amounts commissioned by othercompanies at LNG terminals).

✽2

CH (methane) emissions were converted to CO emissions by multiplying by the global warming potential of 25, asstipulated in the Act on Promotion of Global Warming Countermeasures.

✽3 4 2

For the crude oil equivalent of electricity usage under "District heating and cooling centers" and "Tokyo Gas businessoffices, etc.," the amounts purchased from power utility companies were all calculated using daytime electricity factors.

✽4

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Industrial Waste ✽1

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Industrial waste✽2 Generation tons 118,733 117,832 122,705 130,193 149,317

Amountrecycled

tons116,478 114,994 119,039 124,975 142,629

Finaldisposal

tons1,167 1,956 2,450 3,714 2,433

Recyclingrate

%98 98 97 96 96

Finaldisposalrate

%1 2 2 3 2

  Productionplants (group)

Generation tons 1,213 1,254 1,476 1,330 1,291

Amountrecycled

tons958 1,089 1,062 925 851

Finaldisposal

tons1 0 2 16 18

Recyclingrate

%79 87 72 70 66

Finaldisposalrate

%0 0 0 1 1

Constructionwork ✽2 (group)

Generation tons 114,060 113,451 118,111 125,816 144,594

Amountrecycled

tons112,543 111,160 115,303 121,455 138,851

Finaldisposal

tons1,016 1,820 2,258 3,472 2,221

Recyclingrate

%99 98 98 97 96

Finaldisposalrate

%1 2 2 3 2

Businessoffices, etc. (group)

Generation tons 3,460 3,128 3,118 3,046 3,431

Amountrecycled

tons2,976 2,746 2,674 2,595 2,926

Finaldisposal

tons149 136 190 226 194

Recyclingrate

%86 88 86 85 85

Finaldisposalrate

%4 4 6 7 6

Tokyo Gas Generation tons 4,413 3,903 4,137 4,430 4,462

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non­consolidated

Amountrecycled

tons 4,074 3,531 3,647 3,719 3,629

Finaldisposal

tons102 117 194 360 431

Recyclingrate

%92 90 88 84 81

Finaldisposalrate

%2 3 5 8 10

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Results by Major Sites (FY2015)

Major LNG terminals (Negishi, Sodegaura, Ohgishima)

Category Generation (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Sludge 117.3 2.2 0.2 1.9 0.2

Scrap metal 11.1 11.1 0.0 100.0 0.0

Waste oil 4.0 3.8 0.0 95.9 0.1

Waste plastics 8.6 8.1 0.0 93.8 0.5

Specially­controlled industrialwaste

4.0 2.1 0.0 53.3 0.0

Other 1.5 0.0 0.0 1.3 0.9

Total 146.5 27.3 0.3 18.7 0.2

Gastar Co., Ltd. (gas appliance manufacturer)

Category Generation (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Scrap metal 563.1 563.1 0.0 100.0 0.0

Sludge 28.3 28.3 0.0 100.0 0.0

Waste plastics 29.8 29.8 0.0 100.0 0.0

Waste oil 29.9 29.9 0.0 100.0 0.0

Total 651.2 651.2 0.0 100.0 0.0

Data for "Production plants" includes that from business offices that produce city gas and other products, district heating andcooling centers, and power plants. Data for "Construction work" is for construction taken on by group companies as originalcontractors. Data for "Business offices, etc." includes all data other than that from "Production plants" and "Constructionwork."

✽1

Including construction work for customers of our subsidiaries and affiliates.✽2

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District Heating and Cooling Centers

Category Generation (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Sludge 8.0 5.7 0.0 72.0 0.1

Scrap metal 40.3 40.3 0.0 100.0 0.0

Waste oil 4.1 3.7 0.1 90.4 2.3

Waste plastics 10.3 10.3 0.0 99.7 0.3

Other 7.2 7.2 0.0 99.5 0.0

Total 69.9 67.2 0.1 96.1 0.2

Waste from Construction Work

Category Generation (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Debris 127,437 126,777 660 99.5 0.5

Sludge 9,399 5,717 588 60.8 6.3

Scrap metal 2,008 1,956 42 97.4 2.1

Wood chips 1,626 1,510 101 92.9 6.2

Waste plastics 1,544 1,102 279 71.4 18.1

Glass, concrete, ceramic waste 1,269 842 423 66.3 33.3

Paper waste 274 232 13 84.9 4.6

Other 1,037 715 115 69.0 11.1

Total 144,594 138,851 2,221 96.0 1.5

Business Offices, etc.

Category Generation (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Scrap metal 895 880 12 98.3 1.3

Waste plastics 852 772 72 90.6 8.4

Waste oil 266 263 1 98.8 0.4

Sludge 417 119 49 28.7 11.8

Glass, concrete, ceramic waste 203 174 29 85.9 14.0

Debris 288 284 4 98.5 1.5

Other 510 433 27 84.9 5.3

Total 3,431 2,926 194 85.3 5.6

General Waste

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

GeneralWaste

  Generation tons 3,335 3,407 3,645 3,457 3,143

Amountrecycled

tons2,473 2,489 2,755 2,725 2,441

Recyclingrate

%74 73 76 79 78

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Tokyo Gasnon­consolidated

Generation tons 1,147 1,213 1,154 1,132 1,016

Amountrecycled

tons943 1,020 977 967 870

Recyclingrate

%82 84 85 85 86

  Paperwaste

  Generation tons 2,134 2,199 2,329 2,299 2,056

Amountrecycled

tons1,974 2,060 2,220 2,194 1,934

Recyclingrate

%93 94 95 95 94

Tokyo Gasnon­consolidated

Generation tons 856 920 863 882 783

Amountrecycled

tons801 876 821 830 738

Recyclingrate

%94 95 95 94 94

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By­Products from Gas Pipe Construction Work

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Gas pipe (Note 1)

PE pipe Amountrecovered

tons219 250 231 228 235

Amountrecycled

tons219 250 231 228 235

Recyclingrate

%100 100 100 100 100

Steelandcast­ironpipe

Amountrecoveredandrecycled

tons

3,864 3,711 3,995 4,670 5,003

Recyclingrate

%100 100 100 100 100

Excavatedsoil (Note 2)

Pipe extension work km 1,027 1,183 1,160 1,170 1,121

Estimated excavatedamount

milliontons

3.33 3.59 3.57 3.71 4.49

Actualreducedamount

Reduction(byshallower­laying ofpipes innarrowtrenchesand non­open­cutmethod)

milliontons

1.36 1.40 1.43 1.42 1.32

Reuse(generatedsoil)

milliontons 0.43 0.47 0.49 0.52 0.84

Recycle(improvedsoil,regenerationtreatment)

milliontons

1.04 1.10 1.10 1.15 1.33

Totalreductionamount

milliontons 2.83 2.98 3.02 3.09 3.49

Rate ofreductionamount(comparisonto estimatedexcavatedamount)

%

85 83 84 83 78

Residual soil (actualamount)

milliontons

0.50 0.61 0.55 0.62 1.00

Rate of residual soil(comparison toestimated excavatedamount)

%

15 17 16 17 22

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Tokyo Gasnon­consolidated(Note 2)

Pipe extension work km 931 1,064 1,064 1,065 1,020

Estimated excavatedamount

milliontons

3.11 3.32 3.33 3.47 4.25

Actualreducedamount

Reduction(byshallower­laying ofpipes innarrowtrenchesand non­open­cutmethod)

milliontons

1.28 1.34 1.36 1.35 1.25

Reuse(generatedsoil)

milliontons 0.39 0.41 0.45 0.47 0.79

Recycle(improvedsoil,regenerationtreatment)

milliontons

1.02 1.08 1.07 1.12 1.31

Totalreductionamount

milliontons 2.69 2.83 2.89 2.94 3.35

Rate ofreductionamount(comparisonto estimatedexcavatedamount)

%

87 85 87 85 79

Residual soil (actualamount)

milliontons

0.41 0.49 0.45 0.52 0.90

Rate of residual soil(comparison toestimated excavatedamount)

%

13 15 13 15 21

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Recovery from Our Customers

Category Unit FY2011 FY2012 FY2013 FY2014 FY2015

Waste,etc.

Subject toHomeApplianceRecyclingLaw

Home air­conditioningunits

Units recovered units 21,594 20,045 22,009 15,901 14,863

Units sent toprocessing plants

units21,611 20,041 21,892 16,061 14.862

Units disposed ofbyremerchandising,etc.

units

22,471 19,764 19,962 17,882 14,824

Weight disposedof byremerchandising,etc.

tons

959 829 836 748 615

Tokyo Gas non­consolidatedNote 1:

Data for excavated soil and asphalt concrete. Includes related city gas companies.Note 2:

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Remerchandisedweight

tons 827 732 740 670 559

Remerchandisingrate

%86 88 88 89 90

Fluorocarbons Recoveredweight

kg13,180 12,718 13,036 10,837 9,646

Clothes dryers Units recovered units 5,591 5,604 6,873 6,193 6,710

Units sent toprocessing plants

units5,579 5,607 6,820 6,259 6,707

Units disposed ofbyremerchandising,etc.

units

5,569 5,390 6,671 6,573 6,649

Weight disposedof byremerchandising,etc.

tons

198 193 247 249 258

Remerchandisedweight

tons164 158 209 211 228

Remerchandisingrate

%82 81 84 85 88

SRIMS recovery amount (Note)

Used gasappliances, etc.

tons4,136 4,423 4,345 3,933 3,861

Other tons 3,399 3,804 4,343 5,057 5,075

Total tons 7,535 8,227 8,687 8,991 8,936

SRIMS Recovery Results (FY2015)

Category Recovery (tons)

Amountrecycled (tons)

Finaldisposal (tons)

Recyclingrate (%)

Finaldisposal rate

(%)

Used gas appliances and scrapmetal

3,860.9 3860.9 0.0 100.0 0.0

Waste plastics   585.2 565.0 20.2 96.6 3.4

Polystyrene foam 12.5 12.5 0.0 100.0 0.0

Cardboard boxes 696.6 696.6 0.0 100.0 0.0

Debris 763.2 655.9 107.3 85.9 14.1

Concrete and tile scraps 248.0 179.7 68.3 72.5 27.5

Other 2,782.1 2,408.7 373.4 86.6 13.4

Total 8,935.9 8,366.8 569.1 93.6 6.4

Excludes waste from specified kinds of home appliances.Note:

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Our environmental protection costs in fiscal 2015 totaled 5.78 billion yen, a decrease of 0.2 billion yen

from the previous fiscal year.

Investments totaled 0.87 billion yen, down 0.34 billion yen from the previous year due mainly to

decreased investment by the production division.

Expenses totaled 4.92 billion yen, an increase of 0.13 billion yen from the previous fiscal year.

The economic effect totaled 13.12 billion yen, an increase of 1.39 billion yen from the previous fiscal

year attributable mainly to increased cost savings resulting from a reduction in excavated soil and the

use of energy-saving equipment.

Environmental Accounting of Tokyo Gas Co., Ltd. on a Non-Consolidated Basis (FY2015 Results)

Period: April 2015 to March 2016 Boundary: Tokyo Gas Co., Ltd. Standard of reference: "Environmental Accounting Guidelines 2005" issued by Japan's Ministry of the Environment, and"Manual for the Introduction of Environmental Accounting in City Gas Business" prepared by the Japan Gas Association

(Unit: million yen)

Categories ofEnvironmental

Protection CostsInvestment Expenses Difference

Major items(examples)

FY 2014

FY 2015

FY 2014

FY 2015 Investment Expenses

Pollutionprevention

Capitalinvestment,maintenanceexpenses,depreciation costs,personnelexpenses, etc. forprevention of airpollution, waterpollution, noisepollution, etc.

281 166 305 308 -115 3

Globalenvironmentalprotection

Capitalinvestment,maintenanceexpenses,depreciation costs,personnelexpenses, etc. forenergyconservation,effective use ofenergy, protectionof the ozone layer,etc.

409 197 784 515 -212 -269

Environmental Protection Costs

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Companybusiness

Resourcerecycling

Capitalinvestment,maintenanceexpenses,depreciation costs,personnelexpenses, etc. forreduction/recyclingof excavated soil,waste control, etc.

11 11 395 787 0 392

Environmentalmanagement

Costs for greenpurchasing,environmentaleducation,development andoperation of theEnvironmentalManagementSystem,environmentalorganizations, etc.

0 6 317 322 6 5

Other

Costs associatedwith greenificationand soilrehabilitation inaccordance withthe FactoryLocation Act andordinances

52 21 506 511 -31 5

Customersites

EnvironmentalR&D

Costs for researchand developmentof technologies tominimizeenvironmentalimpact and high-efficiencyappliances andsystems

422 422 1,170 1,158 0 -12

Recycling of used gasappliances

Costs of recoveryand recycling ofsold gasappliances,packaging, etc.

0 0 8 9 0 1

Socialaction

programs

Voluntary greenification,landscape conservation, natureconservation, beautification, support of local environmentalactivities, environmentaladvertising, disclosure ofenvironmental information

27 44 1,298 1,305 17 7

Total 1,203 866 4,783 4,916 -337 133

Notes:

Since decimal places have been rounded off to the nearest whole number, the calculated total and amount of increase ordecrease may not match.

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"Expenses" includes depreciation costs of 593 million yen in fiscal 2014 and 545 million yen in fiscal 2015.Since the costs for environmental R&D are extracted from those for environmental protection, they may differ from thefigures stated in the financial report.Capital investment by Tokyo Gas Co., Ltd. (non-consolidated basis) was 182.8 billion yen, while the sales volume was1,677,345 million yen.

<Main differences from the previous fiscal year>

Pollution prevention The decrease in investment was due mainly to decreased investment by the production department.Global environmental protection The decrease in investment was due mainly to a decrease in capital investment by the productiondepartment. The decrease in expenses was due mainly to the decreased cost of repairs by the productiondepartment.Resource recycling The increase in expenses was due mainly to the increased cost of waste disposal and transport.

Level of Environmental Burden

Category FY 2014

FY 2015

Company

business

Pollution

prevention

NOx (plants) mg/m 0.5 0.4

NOx (district heating and cooling centers) g/GJ 6.6 6.6

COD (plants) mg/m 0.0 0.0

Global

environmental

protection

Energy usage intensity (plants) GJ/million m 203 201

Heat sales intensity (district heating and cooling centers)

GJ/GJ2.0 2.0

Energy usage (business offices) TJ 896 887

Resource

saving

Excavated soil (thousand tons) 551 902

Industrial waste (tons) 4,430 4,462

General waste (tons) 1,132 1,016

Customer

sites

Environmental

R&D

(Reference figures)

CO emissions reduction (million tons - CO )3.29 3.40

Recycling of

used gas

appliances

(Reference figures)

Recovery of used gas appliances and scrap metal by

SRIMS (tons)

3,933 3,861

Notes:

Level of environmental burden is based on environmental performance data.Figures are rounded to the nearest whole number.

(Unit: million yen)Economic effect FY2014 FY2015 Difference

Level of Environmental Burden

3

3

3

2 2

Economic Effect

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Cost reduction from the operation of energy-saving equipment 428 528 100

Cost reduction from a reduction in the amount of excavated soil 10,854 12,161 1,307

Sale of valuables 448 374 -74

Other (cost reduction from water conservation) 9 61 52

Total 11,739 13,124 1,385

Note:

The total and difference figures may not be equal to actual calculation results because the numbers are rounded off to thenearest integer.

<Main differences from the previous fiscal year>

Economic effect The economic effect increased from the previous fiscal year due mainly to higher cost savingsresulting from reductions in excavated soil and use of energy-saving equipment.

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Tokyo Gas prepares and publishes global warming action plans and reports in accordance with localauthority ordinances on measures against global warming.

Tokyo: Global Warming Action Plan (Large Establishments)

Tokyo Metropolitan Government FY2015 Hamamatsucho (Head Office) Building

Tokyo Metropolitan Government FY2015 Senju Techno Station

Tokyo: Global Warming Action Report (Small/Medium­Sized Establishments)

Saitama Pref.: FY2015 Global Warming Action Plan Report

Kanagawa Pref.: FY2015 Report on Results of Action against Global Warming in Business

Yokohama City: FY2015 Report on State of Action against Global Warming

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CO2 is emitted when city gas is used. There are two ways of calculating CO2 emissions: calculating them

directly from the amount of city gas used (in m ), and calculating them from the calorific value (MJ).

CO  emission factor for city gas in terms of usage of kg­CO  per m N of gas

CO2 emission factor

Service area (Pref.)Type of

gasCO2 emission factor per 1 m N (kg­CO2/m N)

Tokyo, Kanagawa,

Chiba, Ibaraki,

Tochigi, Saitama13A

Gunma ✽4 13A

CO  emission factor for city gas in terms of kg­CO  per MJ of gas or CO  emission factor for city gas in terms of kg­C per MJ of gas

Unit calorific values and CO2 emission factors

Service area (Pref.)Type of

gas

Calorific value 

per 1 m N 

MJ/m N

(kcal/m N)

CO2 emission factor 

per 1 MJ of calorific value

(kg­CO2/MJ)

C emission factor 

per 1 MJ of calorific value

(kg­C/MJ)

Tokyo, Kanagawa,

Chiba, Ibaraki,

Tochigi, Saitama

13A 45(10,750) 0.0509 0.0139

Gunma ✽ 13A 43.14(10,306) 0.0506 0.0138

Calculation of CO  emission factors from proportional composition of city gas (PDF:297KB)

3

Calculation from usage (m )3

2 2 3

3 3

Emission factor for residential and other low­pressure gas users   2.21kg­CO /m ✽12 3

Emission factor for factory, commercial building, and other medium­pressure gas users 2.19kg­CO /m ✽22 3

Emission factor at Standard Temperature and Pressure   2.29kg­CO /m N ✽32 3

Emission factor for residential and other low­pressure gas users   2.21kg­CO /m ✽12 3

Factory, commercial building, and other medium­pressure gas users   2.09kg­CO /m ✽22 3

Emission factor at Standard Temperature and Pressure   2.18kg­CO /m N ✽32 3

At 15°C and gauge pressure of 2 kPa✽1

At 15°C and gauge pressure of 0.981 kPa✽2

0°C and 101.325kPa (1 atm)✽3

Same as the above service areas since October 14, 2016.✽4

Calculation from calorific value (MJ)

2 2

2

3

3

3

Same as the above service areas since October 14, 2016.✽

2

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In  Japan,  the  electricity  supplied  by  electric  utilities  is

generated  primarily  by  thermal  power,  nuclear  power,

and hydroelectric power plants. 

Nuclear power plants operate at full capacity except when undergoing routine inspection, while the annual

power output of hydroelectric power plants is determined by the amount of rainfall. 

Therefore, in terms of total annual output, it is most likely to be thermal power generation that is cut when

electricity use is reduced by energy­saving measures.

Different  approaches  are  adopted  for  "calculation  of  actual

emissions"  and  "assessment  of  reduction  due  to  measures."

Actual  emissions  are  typically  calculated  using  the  average

factor for all power uses based on the assumption that all power

sources  are  used.  The  effects  of  measures  pertaining  to

electricity use, on the other hand, must be calculated using the

emission factors for the marginal power sources (thermal power

in the case of Japan) affected by those measures. 

Greenhouse  gas  emission  calculation,  reporting,  and  publication  arrangements  similarly  assume  that

reductions  due  to  such  measures  can  be  calculated  using  the  emission  factors  of  the  power  sources

affected  by  the measures.  For  example,  the  reduction  in  the  case  of  an  annual  300  kWh power  saving

(equivalent to approximately 10% of a standard family's annual electricity use) can be calculated as follows

using the emission factor for thermal power sources: 

300 kWh × 0.66 kg­CO /kWh ✽ ⇒ CO  reduction of 198 kg 

The  Greenhouse  Gas  (GHG)  Protocol's  global  "Guidelines  for  Quantifying  GHG  Reductions  from  Grid­

Connected  Electricity  Projects"  (WBCSD/WRI)  also  require  the  use  of  marginal  factors  to  calculate  the

reduction of CO2 emissions resulting from power reductions.

For more details GHG Protocol Guidelines

The amount of thermal power generation varies according to electricityusage

Methods of calculating CO  emission reductions resulting fromdecreases in electricity usage

2

2 2

Plan for Global Warming Countermeasures Attachment 1: Estimated Reduction in CO2 Emissions in 2030 due toCogeneration Use

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About Third Party Assurance

The environmental  and  social  performance  indicators  (data  on  the  environment  and  human  resources)✽

provided in "The Tokyo Gas Group 2016" on this website have been third­party assured by KPMG AZSA

Sustainability Co., Ltd. (a member of the KPMG Japan group) to enhance the credibility of the data. We will

continue to raise our CSR standards by addressing the issues raised in the third­party assurance process

and reader feedback received online and through other channels.

Content that has been third­party assured is indicated by the phrase "third­party assured" next to the title on each page.✽

Independent Assurance Report on the Tokyo Gas Group CSR Report 2016

Independent Assurance Report on the Tokyo Gas Group CSR Report 2016 (PDF: 490KB)