TCS Corporate Sustainability Report 2010-11 - Tata Consultancy ...

Energy Performance
Energy efficiency has been identified by TCS as a major area for improvement and the
objective is to reduce the energy footprint through various measures like green IT,
green infrastructure, operational energy efficiency, energy audits, awareness drives, etc.
The primary source of electricity at TCS is grid electricity, of which an estimated 64% is from
thermal power plants and the balance is from hydroelectric, other renewable and nuclear
power sources. Backup support – during power outages – is through diesel generator (DG)
sets maintained at each location. In addition, some TCS facilities procured ‘green power’,
from sources like hydroelectric power and wind power farms. A source-wise breakup of the
365,056 MWh (1,237,498 GJ) of electricity consumed by TCS in FY 2011 is given in Figure 46.
91%
7%
2%
Figure 46 Electricity Consumption by Source (%)
Electricity from Green Source
Electricity from Grid
Electricity from DG
TCS strives to manage its energy footprint through a series of initiatives including
infrastructure to operational changes, the highlights of which are summarized below.
Area Action
Green office infrastructure TCS views green infrastructure as a key tool in
the drive to reduce energy footprint, material
footprint and carbon footprint. All new offices
coming up are designed as per LEED Green
Buildings - Gold rating. TCS already has 3 LEED
Certified Green Buildings; at Chennai (Siruseri
– Gold Rated), Bhubaneswar (Kalinga Park –
Platinum Rated) and Trivandrum (Peepul Park –
Silver Rated). A few more are under review for
the certification.
Some key features of the TCS green buildings
include use of solar photovoltaic panels and
chiller waste heat recovery units.
Other initiatives include setting up of solar
water heaters for generating hot water. In FY
2011, TCS increased its solar heater capacity by
99% over 2009-10, helping reduce the energy
used in heating water for use in kitchens,
gymnasiums and washrooms.
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