Sustainable Energy Management (SEM) - KIVI SEM.pdfEnergy KPI Breakdown Overview Sustainable Energy Management 17 PRODUCED PURCHASED UTILITIES UTILITY 100% eff 9,2 m3/kWh 82% eff 82%

Sustainable Energy Management (SEM)June 2017

Johan Ike – Team lead Process control departmentPersonal details

Sustainable Energy Management 2

• 30 years with AkzoNobel (Research & Engineering)• Senior Process Automation Engineer / Team lead P&E PC• Studies, pre-projects, projects, programs

• IT architect for industrial networks• Process control, DCS, SCADA, MES,• Validation in pharmaceutical industry• Program lead Energy Diagnostics

• Projects:• IT lead for several pharmaceutical factories in Oss,• Revamp DCS,• Energy Diagnostics,• Wireless energy metering & monitoring.• Cyber Security

• Coaching / Mentoring

WhyWhy

WhatWhat

HowHow

Sustainable Energy ManagementProgram

3Sustainable Energy Management

1. Introduction

2. Program approach

3. Program execution Technical

4. Technical examples

5. Program execution Mindset & Behavior

Today, we are over-utilizing the earth’s resources


Number of planetEarths used each year

Today 1.6

Why the SEM program?


• For operational (energy) excellence

• To decrease the carbon footprint

• To engage colleagues to be more energy efficient

SEM and AkzoNobel


Scope Operational Eco-Efficiency:Gate-to-Gate


Operational Eco-Efficiency:9 parameters have been defined that measure our footprint

8

• Energy

• VolatileOrganicCompounds(VOC)

• Fresh Water

• Waste

• ChemicalOxygenDemand (COD)

Indirect CO2

Direct CO2

NOx

SOx

Sustainable Energy Management

Sustainable Energy ManagementAgenda


WhyWhy

WhatWhat

HowHow

1. Introduction

2. Program approach




Sustainable Energy ManagementProgram

What is it?• Structured approach• Visualization (usage, ideas & efforts)• Knowledge sharing• Stimulation of continuous improvement• Provision of tools• Support

What is it not?• Audit• Corporate directive• One day initiative• Reinvention of the wheel


Sustainable Energy ManagementEnergy target


Make conventionalenergy as green as

possible

>20% andgrowing

Priority 1:Energy savings

Common opportunities

growing

Priority 2:Renewable energy

Innovative opportunities

Sustainable Energy ManagementSupport


2: Identify targets & saving ideas

3: Prioritize opportunities

4: Generate Measure cards (AR-ready)

Plan & Implementthe measures

1: Install metering to visualize energy usage

5:Stimulate Energy Continuous ImprovementContinuousImprovement

Celebrate success

>5% energy savingcan already berealized after thisstep

>10% energysaving can berealized at this step

>2% energy savingeach year can berealized at this step



WhyWhy

WhatWhat

HowHow

1. Introduction

2. Program approach




Sustainable Energy ManagementRoadmap


Visit 1 Metering Visit 2 Tracking

Make inventoryfor a meteringplan

Investigate theenergy savingsopportunities

Identify quickwins

StimulateMindset &Behavior

Install meteringand monitor for6 months

Evaluatemetering results

Make measurecards, ready forA.R.

Extradashboards &reports

StimulatePerformanceManagement

Track progressof the projects

Put newmeasures onthe priority list

1 week 6 months 1 week Next years

(ISO 50001 compliant)

Sustainable Energy Management3 pillars


PerformanceManagement

Mindsets andbehavior

Technicalsystem

Efficient equipmentVariable speedHeat integration

InsulationGreen energy

Lighting

KPI’s & targetsTracking

DashboardsDialogs

FeedbackDirection

Leadership

MotivationAccountability

ValuesCulture

EducationDecisionsInnovation

Each pillar is equally important

Sustainable Energy ManagementDeliverables


KPI breakdown

Monitoring system

Idea list

Measure cards (AR-ready)

KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards

Continuous improvement

SurveyKPI cockpit

Dashboards


Technicalsystem



Energy KPI BreakdownOverview


PRODUCEDPURCHASED UTILITIES

UTILITY 100% eff 9,2 m3/kWh 82% eff 82% eff eff

0 kWh 0 Nm3 kwh 0 kWh 0 kWh 0 m3100%

3.409.476 Euro 354.151 Euro 39.142 Euro 13.047 Euro 62.627 Euro 573.333 Euro 2.265.025 Euro11 17 26 29 32 35

51.861.000 kWh 1.918.857 kWh 1.918.857 kWh 777.915 kWh 259.305 kWh 1.244.664 kWh 726.054 kWh 45.015.348 kWh76,5% 10

2.609.476 Euro 96.551 Euro 96.551 Euro 39.142 Euro 13.047 Euro 62.627 Euro 36.533 Euro 2.265.025 Euro

28.118.563 kWh 196.830 kWh 9.054.177 kWh 0 kWh 0 kWh 0 kWh 18.867.556 kWh 0 kWh23,5% 14

800.000 Euro 5.600 Euro 257.600 Euro 0 Euro 0 Euro 0 Euro 536.800 Euro 0 Euro

51.643 kWh 51.643 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh0,0% 30

0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro

kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh0,0% 34

Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro

Gas cooling

1,5%

Helium 100,0%

0,0%32,2% 0,0%

10,4% 1,1%

0,5%

Compressed air

0,7%Natural Gas

Electricity

Hot water

Diesel 0,0%

3,7%

Total Energy Cost Direct

3,7%

0,0%100,0% 0,0%

0,0%0,0% 0,0%

2,4% 1,4% 86,8%

0,0% 67,1% 0,0%

VSDS cooling GRU heating Compressors

0,0% 0,0% 0,0%

0,0% 0,0% 0,0%

Energy KPI BreakdownDetail 2013




KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem




Wi-Pulse meter

Mesh Node(Repeater)

Energy analytics & reportingWi-LEM

meter nodes

Tbox data concentratorCommunication PLC

Gas meter

Pump

Compressor

Energy databaseServer



KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



Idea list: difficult to discuss with a group


ID TitleIDcategory Phase GJ savings CO2 savings Net savings Impl. costs Impl.

Payback(y)

100 Install metering for visualization and awareness 1: High savings, Easy to implement7: Measure Defined 844,17 194920 kg € 10.787 € 15.000 Estimate 1,4

104Install a new more energy efficient chiller in stead ofthe 20 year old one. 1: High savings, Easy to implement4: MC candidate 882,00 203654 kg € 11.270 € 30.000 Guess 2,7

105 Install compressed air survey and repair service 0: Savings, Very easy to implement8: Measure Implemented474,73 109614 kg € 3.500 € 1.500 Estimate 0,4

109

Separate compressed air supply lines for WB and SBproduction. During high season block off SB areaduring second shift. 3: No high savings, Easy to implement3: Prioritized 35,60 8221 kg € 455 € 300 Estimate 0,7

111Install timer on the compressors to shut downautomatically after the shift end. 0: Savings, Very easy to implement3: Prioritized 81,00 18703 kg € 1.035 € 200 Estimate 0,2

120

Internal directive for the split heater set points forsummer and winter. A recommendation on the bestsetpoint for building 1 0: Savings, Very easy to implement3: Prioritized 49,00 9400 kg € 650 € 0 Estimate 0,0

122Re-use the heat from the compressors to heat building#5. 2: High savings, Not easy to implement3: Prioritized 395,93 29022 kg € 7.600 € 7.000 Calculation 0,9

130Insulate the Fan Coil Heater pipes going to the Fanboxes in buildings 20 and 14. 1: High savings, Easy to implement4: MC candidate 360,00 83124 kg € 4.600 € 6.000 Calculation 1,3

134Create an internal directive for computers and monitorsetc. used in the offices. Switch of when not in use. 0: Savings, Very easy to implement3: Prioritized 3,91 904 kg € 50 € 0 Guess 0,0

136Schedule cleaning of the Fan Coil Heaters to retain theefficiency 0: Savings, Very easy to implement8: Measure Implemented10,39 762 kg € 200 € 600 Guess 3,0

Program Tracking Tool (PTT)Idea dashboard


last ID number 129

ID no. : 100 Filter

Site : Pontiac x

Utility : All x

Subject : Other x

Source : Tim Evans x

Install metering for visualization and awareness

1: High savings, Easy to implement x

Phase : 3: Prioritized x

Net GJ savings : 3.572 GJNet CO2 savings : 593.595 kgNet savings/year : $27.491Total impl. costs : $37.000

Lead time : 6 weeksInternal FTE time : 4 days

Savings : Estimate x

Idea date : 13-apr-2012 10:50

Last update : 16-apr-2012 21:35 1,3 Payback years (Total impl. costs / net savings)

Approval date :Responsible : Tim Evans x

Remarks : 5% savings on energy use 2011 is normally assumed.

Idea category

-60.000

-40.000

-20.000

0

20.000

40.000

60.000

80.000

100.000

120.000Savings after implementation

1 year 2 years 3 years 4 years 5 years

GJ

Giga Joule Footprint

Program Tracking Tool (PTT)Idea dashboard


1. Standardized lay out forknowledge sharing

2. Phase definition fortracking progress of ideas

3. Prioritizing tool for ideas4. Dashboard function for

quick recognizing ofpriority

5. Automatic tracking of thelast change date

6. Filter possibilities tobrowse quickly to groupedideas

last ID number 129

ID no. : 100 Filter

Site : Pontiac x

Utility : All x

Subject : Other x








Idea date : 13-apr-2012 10:50




Idea category

-60.000

-40.000

-20.000

0

20.000

40.000

60.000

80.000

100.000



GJ




KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



Measure Card used in theprogram


1. Ready for using in theAppropriation Request

2. Standard excel sheet forthe visualization ofenergy savings

3. Automatic calculation ofGJ and CO2 footprint


Measure CardDetails

Sustainable Energy ManagementIdeation Process


• Ideas– Cleaned up– Prioritized

• Opportunities– Measure Card Candidate– Measure Card Ready– Measure Card Approved

• Measures– Measure defined– Measure approved– Measure implemented

Sustainable Energy ManagementIdea Prioritizing


100%

0% 100%

0:Sa

ving

s,V

ery

easy

toim

plem

ent

1: High savings,Easy to implement

2: High savings,Not easy to implement

3: No high savings,Easy to implement

4: No high savings,Not easy to implement

5:N

otfe

asib

le

Implementation effort

Savi

ngs

Sustainable Energy Management22 Opportunities (-28% carbon footprint)


12.442 548.248 € 121.867 € 148.278 GJsavings

CO2 (kg) savings

Netsavings

Impl.costs



KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem





WhyWhy

WhatWhat

HowHow

1. Introduction

2. Program approach




Building / Piping insulationCommon opportunities


•Conditioned air (hot and cold) is lost through roofs, open doors, windowsetc. Can be prevented with roof insulation, strip doors, tinted, reflective orcoated glass

•Insulating could save over 40% of the energy required for heating orcooling.

Source: www.gruenecodesign.com

HVACCommon opportunities


•Reduced set points for heating and increase setpoint for cooling. Reducing a temperature setpoint with one degree can save up to 7% of theheating energy consumed by that room.

•During nights and/or non-production hours setpoints of heating and/or cooling should bereduced/increased or shut down.

MaintenanceCommon opportunities


The difference between clean and dirty heat exchangers can go up to35% of the energy efficiency of the equipment.

TimersCommon opportunities


Switching off the equipments that are not continuouslyin use. Opportunity in mixers, compressed air system,A/C (to reduce running time).

Heat RecoveryCommon opportunities


• Recovery of heat from the furnace exhaust gas/flue gases, fromcondensate or from compressors.

• Within forced draft air systems several systems are available torecover energy with the following energy savings*:

• Recirculation of air: 100%• Heat wheel with absorption: 70% + humidity• Heat wheel: 70%• Cross flow heat exchanger: 60%• Twin coil: 50%*Efficiencies are approximate values

Adiabatic (top-)coolingCommon opportunities


COP Chiller : about 4 (COP = Coefficient of Performance)COP Cooling tower: about 14

BoilersCommon opportunities


•Insulate boiler•Minimize excess air•Heat recovery (economizer)•Repair steam leaks•Use high efficiency boiler

•Shut down boiler when not in use•Reduce temperature of the boiler•Replace high emission fuels (oil) with less polluting fuels (natural gas)•Avoid over dimensional pumps for heating water circuit•Ensure that circulation pumps are switched off in summer

Compressed air systemCommon opportunities


•Reduce pressure of the network•Reduce inlet temperature•Replace air- by electrical equipment (20x more efficient)•Install variable speed drive on the motor.•Differentiate day and night settings.•Maintain equipment•Remove improper compressed air users•Conduct periodic leak surveys and repair•Use the residual heat of the compressor

Electric motorsOpportunities


•Life Cycle Analysis for the electric motor•High efficiency motors, consider buying a more efficient motor:

• For all new installations• When purchasing equipment such as compressors, HVAC systems

and pumps• When major modifications are made to facilities or processes• Instead of rewinding older, standard efficiency units• When replacing oversized or under loaded motors• As part of preventive maintenance or energy conservation programs

Variable frequency for electrical motorsCommon opportunities


Innovative opportunitiesEnergy Efficiency Program


•Replace the conventional boilers with Combined Heat and Power unit(CHP)•Preserve energy during down-time =>Utilities like (hot)water can bestored during down-time instead of discard to sewer.

•Heat / cold storage

•Solar energy

•Wind energy

•Biomass

Heat / cold storageInnovative opportunities


Installed installation in Sassenheim by Wout Versluis

Solar heat, Solar collectors on the roof ofthe cafeteria building at Planta Colón


•15 Heat Pipe Solar Collectors heat the water in the cafeteria (200 employees)and locker rooms

• Execution Period: Nov 2008 – Jan 2009• Investment: US$ 20.000• Installed Power Capacity: 34.968 Kwh/year

In 15 years, the solar collectors will cut anestimated 120 tons of CO2 emissions

Solar & wind energySun and wind light streets of Lang Fangplant, China


•Deco China decided to replace 18 electrical street lights with solar ones. Acombination of solar and wind energy was used to power these five lights, most ofthe power being wind generated in winter and sunlight at other times of the year.

•With an annual electricity consumption of 21024 kWh, the system will generate acost saving of 2.359 EUR with a payback time of 52 months.

Solar energySolar cells on rooftop in Castelletto,


•Cristiano Taverna, Supply Chain & HSE Manager in Italy, took this opportunity toput solar cells on the site’s roof. With a total energy consumption of 1.3 mega Wattper year 15% comes from the solar cells, thereby reducing Castelletto’s externalenergy consumption and energy bill.

•After 6.5 years we will have a positive cash flow and we don’t have to buy asignificant part of the energy from external parties any longer,

Energy RoofInnovative opportunities


Energy RoofInnovative opportunities


Energy opportunity typesSEM Results


1. Maintenance

2. Awareness

3. Control/Timers/Tuning

4. On/Off, Setpoints

5. Insulation

6. Efficient equipment

7. Heat recovery

a) Rework / off spec

b) Over-dimension

c) Over-production

d) Planning

e) Transport

f) Renewables

Energy opportunity typesSEM Results Process control related


1. Maintenance

2. Awareness

3. Control/Timers/Tuning

4. On/Off, Setpoints

5. Insulation

6. Efficient equipment

7. Heat recovery

a) Rework / off spec

b) Over-dimension

c) Over-production

d) Planning

e) Transport

f) Renewables



WhyWhy

WhatWhat

HowHow

1. Introduction

2. Program approach




Behavioral effects of performanceimprovements


Perfo

rman

ce

TimeBefore Step change Sustainability

Behavioraleffect

Deterioration



KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



Energy survey questions aboutDIRECTION (I know what to do)

• Vision, Policy

• KPI’s

• Targets

• Responsibility

• Improvements


Energy survey questions aboutCAPABILITIES (I am able to do it)

• Training

• Knowledge

• Conferences

• Renewable sources

• Purchasing

• Budget


Energy survey questions aboutFEEDBACK (I know how well I am doing)

• Measurements

• Feedback

• Idea box

• Communication

• Reports


Energy survey questions aboutMOTIVATION (I have a reason for doing so)

• Attention

• Implementations

• Recognition

• Rewards

• Role models

• Continuous improvement


Energy Survey results presentationPerformance Management axis


Direction

Feedback

I know what to doVision, Leadership,

CoordinationKPI, Targets, Plans

I know how well I amdoing

Dialogs, Dashboards,Metering, (Automatic)

tracking

Energy Survey results presentationMindset and behaviour axis


CapabilitiesMotivation

I am able to do itEducation, Budget

External orientation,Innovation, Decisions

I have a reason fordoing so

Culture, Accountability,Actions, Values,

Engagement, Rewards

Energy Survey results presentationPMMB axes



Direction

Feedback

I know what to doVision, Leadership,

CoordinationKPI, Targets, Plans



I know how well I amdoing

Dialogs, Dashboards,Metering, (Automatic)

tracking

I have a reason fordoing so

Culture, Accountability,Actions, Values,

Engagement, Rewards

SEM Program DeliverablesEnergy Awareness Survey


0,0

10,0Direction

Capabilities

Feedback

Motivation

Current PracticeQuestionaire Max. score

I know what to doVision, Direction

Leadership, CoordinationKPI, Targets, Plans



I know how well I am doingDialogs, Feedback

Dashboards, Metering(Automatic) tracking

I have a reason for doing soMotivation, Accountability

Culture , Values, Engagement,Actions, Rewards

Example graph

Sustainable Energy ManagementProgramDeliverables


KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



SEM programDashboard


Energy consumption overview Wing A


15001600170018001900200021002200230024002500

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52

Ener

gyco

nsum

ptio

n(k

Wh)

Week number

Actual weekly energy consumption (kWh) Energy usage running average (kWh)

Annual Electricity ConsumptionActual versus Target

Actual Consumption

Target Consumption

￡ 1,163,573

￡ 1,045,000

Year to date

Energy consumption overview Wing A

SEM programCompressed Air Leakage dashboard

40 4530

4030 32

4070

50 55

0

100

35 36 37 38 39 40 41 42 43 44Week no.

Compressed air leaks TargetkW/hr

48

Week no. Remarks Performance43 Leak survey and repair ready Current loss € 4.23839 Leak survey requested Target loss € 4.66038 Broken hose detected Deviation € 422


VisionSet direction and context Set KPI’s

& targets

Budget& plans

Tracking

Dialogues

Actionsrewards 5

Performance Management modelCreate Dialogues


Daily Weekly Monthly

BU manager

Plantmanager

Productionmanager

Supervisor

OperatorBest score: $ 350

Current score: $ 380

C o n t r o l v a lve p o s it io n

0

2 0

4 0

6 0

8 0

10 0

0 2 4 6 8 1 0 1 2

t im e

%op

en

432

ETHOMEEN® C/12 BULK

$ (30)

LBS 45.295

12-12-06

21:44

13-12-06

08:36

Natural Gas/lb produced

0.00000

0.00050

0.00100

0.00150

0.00200

0.00250

0.00300

Jan-

09Fe

b-09

Mar

-09

Apr-0

9M

ay-0

9Ju

n-09

Jul-0

9Au

g-09

Sep-

09O

ct-09

Nov-0

9De

c-09

Jan-

10Fe

b-10

Mar

-10



0.00000

0.00050

0.00100

0.00150

0.00200

0.00250

0.00300

Jan-

09Fe

b-09

Mar

-09

Apr-0

9M

ay-0

9Ju

n-09

Jul-0

9Au

g-09

Sep-

09O

ct-09

Nov-0

9De

c-09

Jan-

10Fe

b-10

Mar

-10




KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



Sustainable Change WorkshopI will change my behavior if……



Direction

Feedback

I know what to doVision, Direction

Leadership, CoordinationKPI, Targets, Plans



I know how well I am doingDialogs, Feedback

Dashboards, Metering(Automatic) tracking

I have a reason for doing soMotivation, Culture,

Accountability, Actions,Values, Engagement, Rewards

Continuous ImprovementPerformance management model



& targets

Budget& plans

TrackingDialogues

Actionsrewards


Direction

Feedback

Continuous Improvement SEMPerformance management model



& targets

Budget& plans

TrackingDialogues

Actionsrewards

last ID number 129

ID no. : 100 Filter

Site : Pontiac x

Utility : All x

Subject : Other x








Idea date : 13-apr-2012 10:50




Idea category

-60.000

-40.000

-20.000

0

20.000

40.000

60.000

80.000

100.000



GJ


PRODUCEDPURCHASED UTILITIES

UTILITY 100% eff 9,2 m3/kWh 82% eff 82% eff eff

0 kWh 0 Nm3 kwh 0 kWh 0 kWh 0 m3100%

3.409.476 Euro 354.151 Euro 39.142 Euro 13.047 Euro 62.627 Euro 573.333 Euro 2.265.025 Euro11 17 26 29 32 35

51.861.000 kWh 1.918.857 kWh 1.918.857 kWh 777.915 kWh 259.305 kWh 1.244.664 kWh 726.054 kWh 45.015.348 kWh76,5% 10

2.609.476 Euro 96.551 Euro 96.551 Euro 39.142 Euro 13.047 Euro 62.627 Euro 36.533 Euro 2.265.025 Euro

28.118.563 kWh 196.830 kWh 9.054.177 kWh 0 kWh 0 kWh 0 kWh 18.867.556 kWh 0 kWh23,5% 14

800.000 Euro 5.600 Euro 257.600 Euro 0 Euro 0 Euro 0 Euro 536.800 Euro 0 Euro

51.643 kWh 51.643 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh0,0% 30

0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro

kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh 0 kWh0,0% 34

Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro 0 Euro

Gas cooling

1,5%

Helium 100,0%

0,0%32,2% 0,0%

10,4% 1,1%

0,5%

Compressed air

0,7%Natural Gas

Electricity

Hot water

Diesel 0,0%

3,7%

Total Energy Cost Direct

3,7%

0,0%100,0% 0,0%

0,0%0,0% 0,0%

2,4% 1,4% 86,8%

0,0% 67,1% 0,0%

VSDS cooling GRU heating Compressors

0,0% 0,0% 0,0%

0,0% 0,0% 0,0%

Sustainable Energy ManagementQuestions?


KPI breakdown

Monitoring system

Idea list


KPI breakdown

Monitoring system

Idea list


SurveyKPI cockpit

Dashboards


SurveyKPI cockpit

Dashboards


Technicalsystem



Documents

Sustainable Energy Management (SEM) - KIVI SEM.pdfEnergy KPI Breakdown Overview Sustainable Energy Management 17 PRODUCED PURCHASED UTILITIES UTILITY 100% eff 9,2 m3/kWh 82% eff 82%