Energy Performance Benchmark

Infosys SDB-11, Pune

Guruprakash Sastry

Regional Head – Infrastructure / Green Initiatives

About Infosys

• Total Revenue: USD 12.7 Billion (FY2020)

• 242,000+ employees

• ~ 50 million sq.ft of space

• Campuses across India – office buildings, training facilities, food courts, guest rooms, amenities, etc.

Infosys is a global leader in next-generation digital services and consulting.

Enabling clients in 46 countries to navigate their digital transformation

Infosys Sustainability Journey

• Focused team “Green Initiatives” started in 2008

• Aggressive goals to reduce environmental footprint

• Made a public commitment in 2011 to become carbon neutral by 2018 (revised to 2020)

• Initiatives across energy and water taken up at enterprise level since 2008

• Focused waste management and carbon offset initiatives since 2015

• Data driven design and operations

• Known as global leader in environmental sustainability

Impact of Energy Efficiency initiatives @ Infosys

Approach to Energy Efficiency

Ultra – Efficient New Buildings

Deep Green Retrofits in Existing Buildings

Automation and Continuous Monitoring

High emphasis on data.We believe in “What is not measured cannot be managed”

Ultra Efficient New Buildings – Design Approach

Building Details

Built Up area 0.5 Million Sq.ft

Total Floors LG 1+LG2+GF+9F

Occupancy 4304

Air conditioning system

Radiant Cooling

Ultra-Efficient Building: SDB-11, Pune

SDB : Software Development Block

Energy Consumption data: SDB-11, Pune

3,504,631 3,420,489 3,554,935

0

1,000,000

2,000,000

3,000,000

4,000,000

2017-18 2018-19 2019-20

Energy Consumption (kWh)

74.0 72.2 75.1

0

10

20

30

40

50

60

70

80

2017-18 2018-19 2019-20

EPI (kWh/sqm/annum)

EPI : Energy Performance Index / Specific Energy Consumption

Salient Features of SDB-11, Pune

Sustainability in design: Longer facades of the buildings oriented North-South and

limiting the overall Window-Wall ratio within 30%

Utility areas covering East and West facades. Insulated walls and roof.

High performance double glazed windows and adopting external shading has limited

the heat ingress.

Windows split into daylight and vision panels to bring in natural light and reduce glare

Innovative radiant cooling system provides high comfort and low energy operation

Building operates with series counter flow chiller arrangement which significantly

improves the efficiency of the chillers at full load and part load condition

Part of largest experiment on cooling systems comparison – along with SDB-10. (Refer

picture in next slide)

SDB-11: Low Energy Design

Projected balconies on South façade serve as effective shading

SDB-11: Integrated RE

Dedicated OutdoorAir System and

Solar PV Plant on the terrace

SDB-11: Largest comparison of cooling systems

SDB-10 (Chilled Beams)SDB-11 (Radiant Cooling)

Salient Features of SDB-11, Pune

Low energy lighting: 0.5 W/sq.ft in design and less than 0.2 W/sq.ft in operations

Occupancy sensors for cabins, meeting rooms and toilets

Server room with chilled water unit during main chiller operation and DX unit during

non-office hours gives 40% savings in comparison with 100% DX based system.

100% of waste water is recycled and reused in the campus for flushing, irrigation and

cooling tower makeup purposes

Continuous monitoring of all the electrical and HVAC equipment efficiencies through

Central command center ensures efficient operation on a continuous basis.

Infosys SDB-11, Pune is an IGBC LEED Platinum Certified building

SDB-11: Continuous monitoring

SDB-11 Design and performance benchmark

Sl.no Performance metric Infosys design 2007-08 Infosys new design % Improvement

1Total building energy consumption (EPI)

200 kWh/m2/year 75 kWh/m2/year 70%

2 Lighting design 1.2 W/sqft 0.48 W/sqft 60%

3Air-conditioning design (Reduction in heat load)

350 sqft per TR 750 sqft per TR 53%

4Total building electrical design

6.5 W/sqft 3.5 W/sqft 46%

Infosys buildings are known to be among the most efficient globally and are a benchmark in the

industry. However, we feel there is always room for improvement and hence there is a continuous

effort towards further improvement by investment in new technologies and partnering with national

and global experts.

SDB-11: Benchmarking with Global Best

Design target Units Conventional Buildings

Efficient Buildings

RMI standard* Infosys SDB-11

Building energy consumption kWh/m2-y 200 125-60 <95 <75

Lighting Power Density: Design W/sqft 1.5 0.8 0.4-0.6 0.5

Lighting Power Density: Operational W/sqft 1.5 0.6 0.1-0.3 <0.15

Installed computers/appliances.. W/sqft 4-6 1-2 <0.5 <0.7

Window glass R-value m2 K/W 0.18 – 0.35 1-1.7 ≥3.5 >5

Window glass (Light to Heat ratio) VLT/SHGC 1 1.2 >2.0 >2.0

Installed mechanical cooling sqft/ton 250-350 500-600 1200-1400+ 750 – 1000

Cooling system efficiency kW/ton 1.9 1.2-1.5 <0.6 <0.59

*RMI : Rocky Mountain Institute, USRMI is globally renowned for their work on super-efficient buildings and sustainability

Sustainability @ Infosys

Reduced per capita electricity consumption by

55% from FY2008 to FY2020

Reduced per capita water consumption by 64%from FY2008 to FY2020

44.3% of our electricity was from renewable sources in FY2020

Installed capacity to treat 100% of organic waste within our campuses

Biogas plants installed to treat food waste and organic waste converters to treat garden waste

Reduced per capita emissions (CO2e) by 70%from FY2008 to FY2020

Infra & Green team

specialists

HVAC & Lighting

Architecture & landscape

Electrical

Water & Waste Mgmt.

Smart Buildings & Campuses

Construction& Project

Mgmt.

Largest Building with radiant cooling system

30% more efficient than most efficient conventional cooling system

Requires 75% less air compared to conventional system

Frees up valuable real estate space, lesser no. of equipment

Higher thermal comfort

Highest indoor air quality .

100

35 25

0

20

40

60

80

100

120

Standard Air-conditioning

Efficient Air-conditioning

Radiant cooling

Cooling energy consumption (kWh/m2/year)

Radiant slab

Radiant pipes

Innovative radiant cooling – Slab based

Innovative Radiant Cooling – Ceiling based

Innovative Radiant Cooling System

Developed by Infosys in-house team

Received European patent in 2018.

Produces twice the capacity and costs half of current solutions in the market

Produces 150 W/m2 at 8 K delta T as per EN14240 standards

Only part of the ceiling needs with Radiflux panels and very easy to install and leak proof fittings

2 million sq.ft of office space at Infosys with radiant baffles

Radiant Baffle

Infosys Central Command Center

Remote Performance Management

Optimizes operations across 30 million sq.ft

Deep Green Retrofits

Re-engineering & Retrofit of

Renewable Energy @ Infosys

Water management – Reduce, Reuse, Recycle

Fresh water consumption Per Capita : 39 liters / day

Waste management

Achieved 91% waste diversion from Landfills (FY2020)

Goal: Zero Waste to landfills

Waste management

2 tons/day Biogas plant at Pune

campus for treating food waste

Equivalent to 120 kg of LPG per day

GHG Emissions

For further details, refer to Infosys Sustainability Report

https://www.infosys.com/sustainability/documents/infosys-sustainability-report-2019-20.pdf

Published in accordance with GRI (G4) standard

Carbon Offset

To achieve 100% offset by 2020

Over 50 National and International awards

Recognition from UN

Infosys won the

‘2019 UN Global Climate Action Award’

For commitment and efforts to become carbon neutral

For reducing carbon footprint significantly over the last 11 years

First Indian company ever to win a UN Climate Award

https://unfccc.int/climate-action/momentum-for-change/climate-neutral-now/infosys

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THANK YOU

Guruprakash_Sastry@Infosys.com