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Rohan Parikh, Infosys at the Conference on “Risk, Competitiveness and Sustainability” on 27th and 28th Feb organized by the Center for Public Policy (CPP),Indian Institute of Management Bangalore (IIMB), the Social, Technological and Environmental Pathways to Sustainability (STEPS) Centre, University of Sussex, UK, UK-India Education and Research Initiative (UKIERI) & Infosys Technologies.
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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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