SUSTAINABILITY @ InfosysDriven by Values

India is fourth largest consumer of electricity in the world

Over 300 million people in India do not have access to electricity

Over USD160 billion was lost in foreign exchange in 2012-13 for oil and coal imports.

Infosys consumes 262 million units of electricity annually in India

Clean energy for all

Source: McKinsey report on India, DGCIS, Govt. of India

Infosys unit cost of electricity is rising at an average rate of 8% YOY

Can we lead the way in addressing the energy problem ?

2

Clean water for all

The per capita availability for water has reduced by 2/3 rd in the last 60 years.

India stands water stresses and is closed to being categorized as ‘water scarce’

Infosys Mysore did not get water from municipal sources for an entire month of May13

Infosys Electronics city did not get water for a week in May13

Can we be a part of the solution and set benchmarks ?

3

Source: www.teriin.org; www.worldometers.infowww.globalchange.umich.edu

Zero waste to landfills

- Construction waste- 12 million tons of construction waste per annum

- Infosys’s contribution is 6000 tons per annum

- Municipal Solid Waste- Current estimate is 60 million tons per year

- Expected to rise to 4 times by 2050

- Infosys contribution is 5000 tons per month

Can we lead the way in waste management ?

Grihaindia.org; tifac.org.in

4

Are we doing enough?

What are the goals would you propose for a company like Infosys?

Current goals• Carbon Neutral

– 50% reduction in per capita electricity consumption

– 100% renewable energy

– Offset travel related emissions

• Become Water positive

– Rain Water harvesting

– Water conservation

– Water Treatment

6

Environmental SUSTAINABILITYPowered by innovation

Integrated Design Approach

• What are the different parameters one would measure the design team against?

• What goals should we set for the design team?

Integrated Design Approach

Performance Contract for the design team

• Building envelope performance as part of the architect’s contract

− Maximum envelope load parameter

• Day lighting and glare as criteria of architect’s contract

− Day lighting to be achieved as per LEED green building standard

• Performance criteria for HVAC consultant

− Criteria on overall energy efficiency of the system

Lighting Optimization

Passive design

Day lighting and energy  simulation

Day lighting strategies

Artificial lighting 

simulation

Efficient fixtures

Efficient light source

Controls

Lightingenergy

Optimizationstrategy

>80% of Occupied Space should be Day Lit11

Use of simulations to validate strategy

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

View Pane is completely shaded by Shading device

100% daylit spaces

Artificial Lighting system and controls

2X reduction in the installed lighting load ~3X reduction in lighting energy consumption

HVAC Optimization

Optimizationstrategy

Air-conditioning energy(HVAC)

HVAC Optimization

Reduce Heat Gain

Energy simulation

Efficient heat 

transfer mechanism

Efficient system

Equipment configuration

Efficient equipment

Control strategy

Continuous monitoring

Optimizationstrategy

Air-conditioning energy(HVAC)

Reduce heat gain

Efficient building envelope

- Wall Insulation (u value less than 0.4 w/m2 deg K)

- Roof Insulation (u value less than 0.35 w/m2 deg K)

- Efficient glazing with low SHGC and u value

(SHGC less than 0.2 and U value less than 1.2 w/m2 deg K)

Integrated design approach

- Performance based, common goal for entire design team

- E.g External heat gain not to exceed 1 watt/sqft

35 0C 24 0C

Heat ingress through standard wall

35 0C 24 0C

Heat ingress through efficient wall

5 times more efficient

2.0 w/m2 deg K

0.4 w/m2 deg K

Better buildings with lower cost

19

Old New

Glass cost ` 230 per sq.ft

Heat ingress from glass 3.8 W/sq.m

Glass cost ` 225 per sq.ft

Heat ingress from glass 1.1 W/sq.m

Energy simulationThermal analysis and study conducted for,

All building facades and orientations

Various wall insulation, roof insulation, shading and glazing configurations

Provides optimized design for entire building envelope

Helps compare all scenarios and take smart decisions Example: Evaluation of peak cooling

load with various scenarios of building envelope through simulation

21

Thermal mass cooled by flowing Yamuna waterThermal energy stored in thick walls and floors

Cooling / Heating Strategy from Old Monuments

Efficient Heat transfer

Heat Capacity of this much air

=

Heat Capacity of this much water

Water has 3400 times more heat carrying capacity than air for the same volume

Pumping cost is 7.5 times lower

Pumping Air Vs. Water for same cooling capacity

Efficient system (Radiant cooling) Manages sensible and latent heat loads independently

Radiant cooling system uses 16 deg C chilled water for sensible cooling

Requires 80% less air than conventional buildings. (Air only for ventilation and latent heat removal

Low pressure drop design for air and water distribution

26

HVAC System Costs

Conventional ‐ VAV Cost in Rs Radiant Cost in Rs

Chiller 3,145,200 Chiller 3,145,200Cooling tower 1,306,400 Cooling tower 1,306,400HVAC low side 22,838,756 HVAC low side 15,310,396AHUs + HRW 5,118,200 AHUs + HRW + DX unit 2,878,900Radiant piping, acc. + installation 0 Radiant piping, acc. + installation 9,075,760

BMS 6,184,000 BMS 6,584,000Total cost 38,592,556 Total cost 38,300,656Area (SF) 120,000 Area (SF) 120,000

Rs./sqft 322 Rs./sqft 319

63 Rupees = US$ 1

Efficient equipment configuration

Cooling is achieved in 2 smaller steps instead of 1 big step

7 % more efficient than regular chillers arrangement

Chiller 1 Chiller 2

Series – Counterflow design 15 0C8 0C

11.5 0C

Chiller 1

Chiller 2

Standard design 15 0C8 0C

500 usgpm

500 usgpm

1000 usgpm

Efficient equipment

Chillers with magnetic bearings

Magnetic levitation Very low friction No oil required

8 % higher efficiency than regular chillers

Smart controls

Adds intelligence into operations

Energy saving algorithms optimize operation at equipment as well as system level

Continuous measurement and verification, continuous commissioning

Improves indoor air quality, employee comfort and productivity

10% reduction in energy as compared to buildings without controls Example of demand  controlled ventilation.

Building only uses as much fresh air as required based on occupancy / CO2 sensing

Continuous monitoring• Energy monitoring system (Ingreen) implemented across

all Infosys facilities

• Building management solution installed in all new buildings

• Smart lighting solutions using sensors

• Data center monitoring using sensors

• Ismart power strip developed for managing individual plug loads

Optimizationstrategy

Results in ‘4x’reduction in air

conditioning energy

HVAC Optimization

Reduce Heat Gain

Energy simulation

Efficient heat 

transfer mechanism

Efficient system

Equipment configuration

Efficient equipment

Control strategy

Continuous monitoring

10%

5%

10%

15%

7%

8%

10%

10%

Energy Efficiency @ Infosys33

297

266

239 230

203

178

0

50

100

150

200

250

300

350

2007‐08 2008‐09 2009‐10 2010‐11 2011‐12 2012‐13

Avg. Monthly kWh / employee

Per Capita Energy Consumption

40%reduction

Growth from 2008 to 201334

Increase in no. of employees in India

over 5 years

93%

16%

Absolute Increase in electricity consumption

in 5 years

225

289309

342

392

437

259249

265 268 262

200

250

300

350

400

450

2007‐08 2008‐09 2009‐10 2010‐11 2011‐12 2012‐13

Energy con

sumption (M

illion un

its)

BAU Vs Actual energy consumption

Impact of Energy Efficiency35

BAU

Actual

40% less465 million units

Impact of Investment in Green initiatives?36

Avoided costs in 5 years

465 Million units avoided

51 Million USD spend on electricity avoided

50 man years of effort by green initiatives team

In 2007-0837

•Average for software buildings (incl. lights, AC, computers, etc.)

Building energy: 200 units/sqm per year

•Average for software buildings across campuses

Lighting design: 1.2 W/sqft

•Average installed cooling capacity across campuses

AC design: 350 sqft per TR

•Total electrical load for software buildings including chiller plant

Electrical design: 6.5 W/sqft

In 2012-1338

•Average for software buildings (incl. lights, AC, computers, etc.)

Building energy: 90 units/sqm per year

•Average for software buildings across campuses

Lighting design: 0.45 W/sqft

•Average installed cooling capacity across campuses

AC design: 550 sqft per TR

•Total electrical load for software buildings including chiller plant

Electrical design: 3.5 W/sqft

55% lower

62% lower

36% lower

46% lower

Impact of new design on first and operating cost

Sl. No. System Description Units New designs at Infosys

Old designs at Infosys

Conventional

01 Total electrical load MW 3.5 6.5 10.0

02 Transformer capacity MVA 4.0 7.5 12.0

03 DG set capacity  MVA 5+2.5 9+3 15+3

04 Annual energy consumption Million kWh 9 20 25

Infrastructure required for 1 million sqft,

Item FY 08 (INR) FY 13 (INR) Cost escalation

RMC (Ready mix concrete) (cubic meter) 1425 2800 96%

Steel (per kg) 32.5 46 41.5%

Work Station (per w/s) 8500 11100 30%

Unskilled Labor (per day) 200 300 50%

Cost of Skilled Labor (per day) 350 550 57%

Cost of completed building (per sq. ft) 2250 2700 20%

40

Increase in efficiency without increase in first cost

Solar power plants @ Infosys41

Infosys Jaipur Infosys Chennai

Continuous optimization through central command center

Operations driven by performance parameters

Efficient building(Managed by experts)

Electricity

Renewable energy

Water

Standard building(Managed by standard 

AMCs)

Electricity

Renewable energy

Water

Operations limited to functional parameters10% more efficient than standard operations

Water Sustainability43

Ajit Ninan

(Source: The Times Of India Group) © BCCL

44

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 litresThe 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

Recharging the shallow aquifer

Onsite Ponds/Lakes

Impact of Water Efficiency Initiatives47

Increased by 39% 6% improvement

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

Bio Diversity: Reviving the ecological cycles

Bio Diversity: Reviving the ecological cycles

Hyderabad: Reviving the ecological cycles

Solid waste management goals at Infosys Achieve 100% segregation at source. Segregation is the key to waste management.

Organic waste:

All organic waste generated to be treated in our campuses (nothing should go out)

Inorganic waste:

All non-hazardous dry waste to given to authorized recyclers/handled to ensure zero disposal to landfills

Hazardous waste:

All hazardous waste to be handled by authorized vendors only. Zero disposal to landfills

All waste that cannot be recycled or is not feasible to recycle should be converted to energy using waste to energy converters

51

Waste to energy converter52

Oil (47%)

Petroleum Gas (18%)

Char (35%)

Granulated,

- Plastic waste- Rubber waste- Non-recyclable

mixed waste

53

53

Output from converter

CFL and tube light recycling system

5454

Discarded tube lights and CFLs

Recovers mercury vapor which is sent to recyclers

Separates glass, plastic and metal components

from hazardous material to enable recycling

Contain mercury vapor which is very toxic.

Mercury can get into human body through air,

water, food chain and adversely affects health

Biogas plant at Mysore DC

500 kgs of organic waste per day

55

23.5 kgs of LPG per day

Used in kitchens in food courts

Beema Bamboo for carbon sequestration

Wonder crop for carbon sequestration and energy generation

Grows at the rate of 1 feet per day (after one year),

Has three times higher thickness (cross section) than normal bamboo, hence higher biomass

Sequesters 8 times more carbon than normal plant for same acreage of plantation

Energy crop of the future - renewable biomass of bamboo can be used to generate electricity (Calorific value 4000 kcal/kg)

© 2013 Infosys Limited, Bangalore, India. All Rights Reserved. Infosys believes the information in this document is accurate as of its publication date; such information is subject to changewithout notice. Infosys acknowledges the proprietary rights of other companies to the trademarks, product names and such other intellectual property rights mentioned in this document. Exceptas expressly permitted, neither this documentation nor any part of it may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, printing,photocopying, recording or otherwise, without the prior permission of Infosys Limited and/ or any named intellectual property rights holders under this document.

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© 2013 Infosys Limited, Bangalore, India. All Rights Reserved. Infosys believes the information in this document is accurate as of its publication date; such information is subject to changewithout notice. Infosys acknowledges the proprietary rights of other companies to the trademarks, product names and such other intellectual property rights mentioned in this document. Exceptas expressly permitted, neither this documentation nor any part of it may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, printing,photocopying, recording or otherwise, without the prior permission of Infosys Limited and/ or any named intellectual property rights holders under this document.

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