20120228_Sustainability in Action_ Rohan Parikh

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Our Energy Scorecard

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1,30,000 employees in India

• Total employees in India operations

28 million sq.ft. • Total built-up space of Infosys, across 10

locations

280 million units

• Annual electricity consumption

• Consumption per working day @ Infosys

~1 million units/day of consumption

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Setting New Benchmarks: Being Unreasonable

Energy efficiency : 4X Improvement target over 2007 levels

Carbon neutral : Sourcing energy from Green Utilities

Water neutral : Rain water harvesting and recycling

Waste Neutral : Organic nutrients should not leave our campus

Bio diversity : Plant one native tree for every new employee

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• To make Infosys a global

leader in environmental

sustainability

• To be the trendsetter in the

industry

• Work with best resources

available globally

• To demonstrate the

feasibility of cutting edge

technologies to impact the

society at large Landscape

Lighting

AC

Water

Biodiversity

Awareness

Renewable

energy

Metering

Green

Team

Pune

Sholinganalli

Chandigarh

Electronic city

Hyderbad DC

Mahindra City

Mangala

Mysore

Nethra

In God We Trust: All Others Must Bring Data

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1. Setting baseline

2. Data driven engineering

3. Performance based AMC Contracts

4. Field sensors

5. BMS system

So Far, So Good

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Increased by 18% 23% improvement

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Question all Assumptions

Promote interaction between design consultants

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Building envelope performance as part of the architect’s contract

Day lighting criteria as part of architect’s contract

Performance criteria for HVAC consultant

Positive Disruption

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• Building envelope heat load not to exceed 1.0 W/ Sqft

• More than 75% of the office area to be naturally lit

as per LEED standards

Breaking the barrier…………..

• > 550 Sqft per TR of AC area

• < 0.4 W/ Sqft for lighting design

• < 0.5 kW/TR for chiller plant design

• < 3.5 W/ Sqft for electrical design

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>200% improvement in overall energy efficiency of new

buildings

Existing buildings of Infosys

New Design

Cutting edge design

80% of Occupied Space Should be Day Lit (3X)

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Use of simulations to validate strategy

North South facing building with 16 m width to ensure 80% of spaces are day lit

Window Strategies: Maximize Day Light

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Bright day light without glare at SDB-5 Mysore Mysore SDB 5 building with above strategies

Light Up India!

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2X reduction in the installed

lighting load

~3X reduction in lighting

energy consumption

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Electrical Design & Operations

Cooling / Heating Strategy from Old Monuments

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Thermal mass cooled by flowing Yamuna

water Thermal energy stored in thick walls

and floors

Fundamentals of Physics and Heat transfer

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Radiant Cooling – Hyderabad Building

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Innovative Cooling Technology – Radiant Cooling

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3X Reduction in Air-Conditioning Energy

• Figures based on actual

measured data in

Hyderabad buildings for

Mar – Jul 2011

• 3X improvement in

efficiency compared to

2007 design

• Radiant cooling at no

additional cost

Renewable energy: Making Green Power Competitive

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• Renewable energy at Infosys

• One of the largest installation of solar water

heater in the country @ 6 lakh litres/day

• Currently purchasing 60 million units of

renewable power

• Currently installing onsite Solar PV/Micro wind

plants

• R&D of Solar Thermal technology

• Helping drive Policy Level Changes

• Succeeded in persuading Karnataka regulators

for removing cross subsidy

• Karnataka has introduced voluntary ‘Green

Power Tariff’

• Open access now allowed in Tamil Nadu

Wind turbine at Mangalore

250 kw plant in Jaipur

Water Sustainability

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Ajit Ninan

(Source: The Times Of India Group) © BCCL

Impact of Water Efficiency Initiatives

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Increased by 39% 6% improvement

6% efficiency improvement translates to saving of 235 million litres every year

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Water Conservation: Mysore Case Study

Initiatives in Mysore campus:

• Recycled water used for flushing in

2250 hostel rooms – saving 2.5 lakh

litres of fresh water everyday

• Flow restrictors installed in showers

and taps in 10,000 hostel rooms –

saving 4 lakh litres of fresh water

everyday

• Water leakage arresting and more

efficient housekeeping practices in

hostels – saving about 3 lakh litres

every day

• Mysore campus sources about 60%

of its daily fresh water requirements

from these dug wells

10.6

6.9

0.0

2.0

4.0

6.0

8.0

10.0

12.0

2007-08 2010-11

kil

o lit

re/m

on

th

Per capita fresh water consumption in Mysore campus

Reduction of 35%

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100% Water Sustainability by Rain Water Harvesting

Rain water harvesting

• 8 reservoirs built in Mysore – total capacity 38 Million litres

• 7 reservoirs built in Mangalore – total capacity 35 Million litres

• 3 reservoirs built in Pune – potential capacity of 90 Million litres

• 4 reservoirs built in Hyderabad – potential capacity of 130 Million litres

The amount of rain water sequestered in our Indian campuses is estimated at more than

4.3 Billion litres every year; which is about 123% of our annual water consumption

Rainwater Harvesting at Infosys Campus

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Advanced Sewage Treatment Technology

STP with Membrane technology

Online monitoring of STP operations

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Goals in Water efficiency

Water efficient fixtures:

Taps <4 lts/min

Shower heads 6 lts/min

Water Urinals 0.5 lts/flush

EWCs 6/3 lts/flush (dual flush)

Current Consumption New design standard

Per capita consumption for SDB 45 lts/day 30 lts/day

Campus per capita water consumption 65-70 lts/day 45 lts/day

Biogas plant in Mysore campus – Recycling food waste

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• Carbon footprint reduction of nearly 200

tons/year

• Biogas plants being built in all other

campuses as well

• Goal - 100% recycling of organic waste

within the campuses

Biogas plant in Mysore campus

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Chemical Reduction Initiative

• Standardized the usage of housekeeping chemicals in all campuses

resulted in reduction of 75% in the number of chemicals used

• Chemical fertilizers used in landscaping has been replaced with

organic manure

• We will be using only Green seal chemicals for housekeeping going

forward

• We are in process of replacing all pesticides with organic substitutes

• Chemical free water treatment being tested and deployed for air

conditioning water treatment

Set unreasonable targets

Question everything!

Efficient buildings do not cost more,

Measure and Monitor

Seeing is believing!

• but need a little effort

Experiences / Conclusions

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THANK YOU

www.infosys.com

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