Page 1
321
First Prize
Office Buildings
(more than 10 lakh kWh/year consumption)
INFOSYS LIMITED
SOFTWARE DEVELOPMENT BLOCK-2 Chengalpet (Tamil Nadu)
Unit Profile
Infosys is a global leader in consulting, technology, and outsourcing solutions. As a
proven partner focused on building tomorrow's enterprise, Infosys enables clients in
more than 50 countries to outperform the competition and stay ahead of the
innovation curve. With US$ 8.25 bn in FY14 revenues and 165,000+ employees,
company provide enterprises with strategic insights on what lies ahead. Infosys
campus in Mahindra World City was started in the year 2005 and has been growing
steadily since then. Today, company has close to 15000people working out of this
campus. The campus is engaged in high end software development works for the
various customers spread around globally. As a responsible Corporate, company has
embarked on a journey towards sustainability in terms of Energy Usage in the
campus.
Page 2
322
Energy Consumption
Year
Total electricity
consumption/ Total built-
up area (kWh/m2)
% Reduction over
2013 - 2014
2012-13 207.75 --
2013-14 141.78 31.75%
BUILDING AREA AND CONNECTED LOAD DETAILS
Building Area and Connected Load 2012-13 2013-14
Total Built up Area (in m2) 12399 12399
Air-conditioned area (in m2) 10540 10540
Non-Air conditioned area (in m2) 1859 1859
Total Connected Load ( in kW) 1105 600
Average power factor for the period 0.99 0.99
Building operating hours 10 10
ENERGY CONSERVATION PROJECTS IMPLEMENTED
• Central Air-Conditioning Plant with automation controls and monitoring to
meet out the high energy efficiency standards. The central plant also
provides us a good amount of diversity in operation.
• Re-commissioned all the AHUs, VFDs, and Actuators & Sensors.
• Replacing Air cooled VRVs (Dx units) with Centralized Air conditioning.
ECM 1 – Central Air-conditioning plant with automation controls and monitoring to meet out the energy efficiency standards
As a part of energy saving initiative, company have converted the air cooled chiller
into water cooled chiller by connecting the pipe line from centralized water cooled
chiller plants to SDB with necessary valves. This has helped building to minimize
the high power required to run the chillers. The water cooled chiller’s efficiency is
about 0.6 KW/TR whereas the air cooled chiller efficiency is 1.65 KW/TR.
ECM 2 - Re-commissioned all the AHUs, VFDs, Actuators & Sensors
Building has replaced the conventional valves with PIBCV valves which will modulate
on the basis AHU’s of supply air temperature. The chiller would be utilized at
optimum level when the PIBCV valve is modulated which triggers the reduction in
energy consumption in the centralized chiller plant. These valves basically regulate
the chilled water flow to the required load condition based on the occupation.
Page 3
323
The AHU’s return air sensor has been replaced with advanced one which will
modulate the VFD operation. The energy consumption of AHU’s motor and as well as
chiller would get reduced considerably with the help of VFD modulation.
ECM 3 - Replacing Air cooled VRVs with Centralized Air conditioning
Building has switched off the air cooled VRV indoor AC units which are connected to
floor cabins and meeting rooms and the same has been extended through duct from
centralized water cooled AHU. This has resulted in reducing the inefficiency in terms
of using conventional Dx units.
The energy consumption has been reduced from 1.2 kW/TR with VRV air cooled AC
operation to 0.6 kW/TR with the help of centralized plant AHU.
Page 4
324
Second Prize
Office Buildings
(more than 10 lakh kWh/year consumption)
NORTHERN RAILWAY, LUCKNOW DIVISION
Lucknow (Uttar Pradesh)
Unit Profile
Lucknow Division, formerly part of Oudh Rohilkhand Railway up to 1925, and later
part of East Indian Railway from 1925 to 1952, caters to rail transport requirement
of the most populous state of the country, serving 14 districts of Uttar Pradesh with
a total route network of 1460.12 Kms.
This Division is predominating passenger services oriented with about 398
passenger-carrying trains. The Division provides vital link between Eastern and
Northern States for freight & passenger traffic. The important stations e.g.
Lucknow, Varanasi, Faizabad, Ayodhay, Prayag, Pratapgarh, Sultanpur & Raebareli
are part of this division. The DRM office, Lucknow is the main administrative &
control building for entire train operation, planning and execution. The building is
centrally located in Hazaratganj the heart of Lucknow City.
In recent past, the need to upgrade infrastructure of Divisional system has been also
addressed. Notwithstanding the constraints, deficiencies and shortcomings in the
system, Lucknow Division has continually made major strides to achieve higher level
of performance in all areas.
Energy Consumption
Year Total electricity consumption/ Total built-up area (kWh/m2)
% Reduction over 2012-13
2012 - 2013 125.57
2013 - 2014 89.14 29.01%
Elect. Saving in 2013-14
(Lakh kWh)
Elect. in 2012-13
Consumption (Lakh kWh)
% Elect. Saving (savings achieved/ electricity
consumption of previous year)
(i) (ii) (i) / (ii) x 100
4.2 14.5 28.97%
Page 5
325
Building Area and Connected Load 2012-13 2013-14
Total Built up Area (in m2) 11553 11553
Air-conditioned area (in m2) 3750 5941
Non-Air conditioned area (in m2) 7803 5612
Total Connected Load ( in kW) 475 515
Building contract demand with electric utility company (kVA)
325 325
Building operating hours 10 10
Energy Consumption Project Implemented
1. Replacement of 545 Nos. 90 watt ceiling fan by 425 Nos. 60 watt ceiling with
Electronic regulator and replacement of 210 Nos. 90 watt ceiling fan by 50 Nos.
40 watt bracket fans resulted into reduction of energy from 184975 kWh to
48125 kWh.
2. Replacement of 535 Nos. 40 watt tube light fitting with 395 Nos. 28 W T-5
fitting resulted into reduction of energy from 105975 kW to 48300 kW.
3. Provision of occupancy sensor in Officers chamber resulted into saving of 41160
kW.
4. Replacement of 3 x 36 W CFL, 40 W, 2 x 40 W Tube light with LED light fittings
in DRM Office resulted into reduction of energy from 1,18,792 kWh to 27,186
kWh.
Other steps such as timely switching off of light, fan & AC load in offices, controlling
maximum demand, replacement of inefficient ACs, proper temperature setting etc.
Page 6
326
Certificate Of Merit
Office Buildings
(more than 10 lakh kWh/year consumption)
INFOSYS LIMITED
Software Development Block - 1 Chengalpet (Tamil Nadu)
Unit Profile
Infosys campus in Mahindra World City was started in the year 2005 and has been
growing steadily since then. Today, company has close to 15000 people working out
of this campus. The campus is engaged in high end software development works for
the various customers spread around globally.
ENERGY CONSUMPTION
Year Total electricity consumption/
Total built-up area (kWh/m2)
% Reduction over
2013 - 2014
2012-13 231.13 --
2013-14 166.47 27.97%
Page 7
327
Building Area and Connected Load Details
Building Area and Connected Load 2012-13 2013-14
Total Built up Area (in m2) 11275 11275
Air-conditioned area (in m2) 9584 9584
Non-Air conditioned area (in m2) 1691 1691
Total Connected Load (in kW) 1050 585
Average power factor for the period 0.99 0.99
Building operating hours 10 10
ENERGY CONSERVATION PROJECTS IMPLEMENTED:
• Central Air-Conditioning Plant with automation controls and monitoring to meet
out the high energy efficiency standards. The central plant also provides us a
good amount of diversity in operation.
• Re-commissioned all the AHUs, VFDs, and Actuators & Sensors.
• Replacing Air cooled VRVs (Dx units) with Centralized Air conditioning.
ECM 1 – Central Air-conditioning plant with automation controls and
monitoring to meet out the high energy efficiency standards:
Campus has converted the air cooled chiller into water cooled chiller by connecting
the pipe line from centralized water cooled chiller plants to SDB with necessary
valves. This has helped campus to minimize the high power required to run the
chillers. The water cooled chiller’s efficiency is about 0.6 kW/TR whereas the air
cooled chiller efficiency is 1.65 kW/TR.
ECM 2 - Re-commissioned all the AHUs, VFDs, Actuators & Sensors:
Campus has replaced the conventional valves with PIBCV valves which will modulate
on the basis AHU’s of supply air temperature. The chiller would be utilized at
0
50
100
150
200
250
kWh/m
2
Year
SDB-1
2012 - 2013
2013 - 2014
Page 8
328
optimum level when the PIBCV valve is modulated which triggers the reduction in
energy consumption in the centralized chiller plant. These valves basically regulate
the chilled water flow to the required load condition based on the occupation.
The AHU’s return air sensor has been replaced with advanced one which will
modulate the VFD operation. The energy consumption of AHU’s motor and as well as
chiller would get reduced considerably with the help of VFD modulation.
ECM 3 - Replacing Air cooled VRVs with Centralized Air conditioning:
Campus has switched off the air cooled VRV indoor AC units which are connected to
floor cabins and meeting rooms and the same has been extended through duct from
centralized water cooled AHU. This has resulted in reducing the inefficiency in terms
of using conventional Dx units.
The energy consumption has been reduced from 1.2 kW/TR with VRV air cooled AC
operation to 0.6 KW/TR with the help of centralized plant AHU.
0
2000
4000
6000
8000
10000
12000
14000
Units
2012 to 2013 2013 to 2014
Page 9
329
First Prize
Office Buildings
(less than 10 lakh kWh/years consumption)
SOUTH CENTRAL RAILWAY, HYDERABAD DIVISION
HYDERABAD BHAVAN Hyderabad (Telangana)
Unit Profile
Hyderabad Bhavan, which was built in the year 2007, is the Divisional office of the
Hyderabad Division, South Central Railway (SCR). The entire train operations of this
division is controlled and monitored from this building.
The entire building is surrounded by Green patches to provide serene and lush green
ambience which will also add to the conservation of energy. LED facade lighting is
being used to illuminate during the night hour.
Energy Consumption
Elect. Saving in
2013-14
(Lakh kWh)
Elect. Consumption in
2012-13
(Lakh kWh)
% Elect. Saving (savings
achieved/ electricity consumption
of previous year)
1.20 3.97 29.98
Page 10
330
Energy Conservation Measures Taken
1. Energy Monitoring system
Exclusively monitoring the Energy consumption every day by specially designed
software “Eagle Eye” and balancing the phase currents, which have given major
thrust in saving of energy.
2. Installation of 6 Nos. Star rated Ceiling fans in place of Conventional
ceiling fans
Provided 06 No’s of Star Rated Ceiling Fans in place of 60W Ceiling Fan leading to
saving of 156 Units amounting to Rs.1221/- per annum. This building was provided
with 98 % of fans are of BEE 5 star rated.
3. Installation of 92 Nos. LED 15 W down light fitting (Including driver) in
place of CFL 2x18 W
Provided 92 No’s of 15W LED Down light Fittings (Including driver) in place of
2x18w CFL Fittings leading to saving of 9,568 Units amounting to Rs.74,917/- per
annum.
4. Installation of 08 Nos. of LED 03 W (Including driver) in place of 50W
Halogen fitting
Provided 08 No’s 3W LED Fittings (Including driver) in place of 50W Halogen fitting
leading to saving of 978 Units amounting to Rs.7,658/- per annum.
5. Installation of 54 Nos. T-5 2’x14 W fitting in place of T-5 4’x28w fitting
Provided 54 No’s of T-5 Fitting 2’-14W in place of T-5 Fitting 4’-28W leading to
saving of 2,106 Units amounting to Rs. 16,490/- per annum.
6. Installation of 08 Nos. 10W LED Fitting (Including driver) in place of
CFL Fittings 2x11W fitting
Provided 08 No’s of 10W LED Fittings (Including driver) in place CFL Fittings 2x11W
leading to saving of 416 Units amounting to Rs. 3,257/- per annum.
57.37
40.17
0
10
20
30
40
50
60
Specific Energy Consumption (SEC)
Total electricity consumption/ Total built-up
area (kWh/m2)
2012-2013
2013-2014
Page 11
331
7. Installation of 02 Nos. 40W Induction Fittings in place of 70W MH
Fitting
Provided 2 No’s of 40W Induction Fitting in place of MH Fitting 70W leading to saving
of 312 Units amounting Rs.2, 443/- per annum.
8. Installation of 02 Nos. LED 50W Outdoor Fitting (Including driver) in
place of 70W MH Fitting
Provided 2 No’s of LED 50W Outdoor fitting (Including driver) in place of 70 W MH
Fitting in the gate entrance of the building leading to saving of 438 Units amounting
Rs.3, 430/- per annum.
9. Removed 09 Nos of F.T Mirror optic fitting 2x40W (Redundant Fitting)
Removed 9 No’s F.T Mirror optic 2x40W fitting (Redundant Fittings in various
chambers) leading to saving of 2,574 Units amounting Rs.20, 154/- per annum.
10. Installation of 90 Nos. LED 07W (Including driver) in place of CFL
2x18W Fitting
Provided 90 No’s of 7W LED Fittings(Including driver) in place of CFL 2x18W Fittings
leading to saving of 11,232 Units amounting Rs. 87,947/- per annum. These are
provided in the corridors/staircases/halls.
11. Installation of 07 Nos. Star rated Split AC Unit 1.5 Tr in place of 1.5 Tr
Window AC Unit
Provided 7 No’s of Star rated Split AC Unit 1.5ton in place of Window AC unit 1.5 ton
leading to saving of 7,280 Units amounting Rs.57, 002/- per annum.
12. Installation Sun light Control film for AC rooms
Stickered Sun light control film for AC Officer Chambers and Control room leading to
saving of 698 Units amounting Rs.5465/- per annum.
13. Installation of 04 Nos. 40W Induction fitting in place of 150W MH
Fitting
Provided 4 No’s of 40W Induction Fitting in place of MH Fitting 150W leading to
saving of 2,803 Units amounting Rs. 21,947/- per annum. These fittings are
provided in the portico of the building entrances in the both sides.
14. Installation of 12 Nos. LED 15W Fitting (Including driver) in place of
CFL 2x18W Fitting
Provided 12 No’s of 15W LED Down light Fittings (Including driver) in place of
2x18w CFL Fittings leading to saving of 2,103 Units amounting Rs. 16,466/- Per
annum which are used in the control office for more than 12 hours.
15. Savings of Lift operational Hours
Savings gained from Lift operational Hours - Resulting in savings of 14,547 Units
amounting Rs.1, 13,903/- per annum. One lift is being switched off to encourage the
staff to use staircases for their health and optimum utilization of the lift.
Page 12
332
16. Installation of 11 Nos. Occupancy Sensors (Toilets)
Provided 11 No’s of Occupancy Sensors in Toilets leading to saving of 3,604 Units
amounting Rs. 28,219/- per annum.
17. Switching ‘OFF’ of unnecessary equipments and luminaries by
sensitizing the Electrical and Security staff particularly record rooms.
Good Operational Practices Adopted for Energy Conservation
• Energy monitoring system - Exclusively monitoring the Energy consumption
every day by specially designed software “Eagle Eye”.
• Daily monitoring the Energy consumption through specially designed software.
• Creating awareness among the users through various activities such as
brochures / seminars.
• To minimize the specific energy consumption w.r.t previous years.
• Conducting of regular inter departmental energy audits aimed to minimize the
energy losses.
• Implemented the action plan of energy conservation items to reduce the Energy
Consumption at least by 10% every year w.r.t. previous years targets.
• Promote use of the renewable sources of energy.
• LED Fittings are used in the office lighting in various chambers and corridors.
• All the stair cases are fitted with lower wattage (7W) LED bulk head fittings
• Provided 13 Nos. of AC’s units with 5-star rated working in synchronization of
occupancy sensors in the chambers.
• Provided 12 No’s of Energy saver for AC units for continuous working AC’s in the
control centre.
• Water coolers in the building are provided with timer control to operate during
the office hours only. Timer will switch off after 6 hours in the evening.
• Toilets are provided with motion sensors to work lights and exhaust fans only in
case of utilization by staff.
• Special focus to switch off the computers in the evening session with help of
office peons.
• Timer’s provision for the façade lights and Garden lights with timer control to
switch off at 22:00 hrs pm.
Page 13
333
Second Prize
Office Buildings (less than 10 lakh kWh/years consumption)
ICICI BANK LIMITED
SRIRAM TOWER
Khairatabad (Telangana)
Unit Profile
ICICI Bank provides sustainable banking products to cater to different classes of
customers through its extensive branch and ATM network, mobile, phone, internet
and doorstep banking.
ICICI Bank is taking several steps in Energy conservation, Transportation Efficiency,
Water conservation, Paper usage reduction, waste management under Go Green
Drive.
The Go Green Initiative of ICICI Bank cuts across all functions and departments.
Each team from the top management to lowest level is involved in driving these
initiatives in their respective domains. There is a Go Green Steering Committee
formed comprising senior members from all verticals to drive energy, water and
waste reduction initiatives. Regular employee engagement activities like plantation
drive, weigh paper drive, idea generation drive, Pollution under Control (PUC) drive,
no plastic day, etc. are carried out on regular intervals to involve all employees in
the initiative and inculcate the culture of sustainability.
The operations of ICICI Bank have commenced at Sriram Tower, Khairatabad since
2008. The total area of the tower is 1600 Sq. meters with multiple floors (G+5). The
area occupied by ICICI Bank for its operation is 1158 Sq. meters. Total manpower
strength at this tower is 195.
Page 14
334
Energy Consumption
Energy Conservation Measures Taken
Sr. No. Activity
Elect. Saving
(Lakh kWh) in
2013-14
Elect. Saving
(Lakh Rs.) in
2013-14
Investment
(Lakh Rs.) in
2013-14
1 Optimisation of
HVAC timings 0.45 4.05 Nil
2 Switching off
unwanted loads 0.31 2.79 Nil
3 Controlling of HVAC
temperature 0.29 2.61 Nil
4 Optimisation of
lighting timings 0.14 1.26 Nil
Total 1.20 10.71
Achievements
• Investment – Nil. (Savings achieved
without any capital investment)
• Reduction in EPI & Energy requirement –
29.8%
• Amount Saved - Rs. 10.71 Lakh
0
100000
200000
300000
400000
500000
2012-13 2013-14
Units
Energy Uses
Year Energy Usages (kWh)
2012-13 4,04,477
2013-14 2,83,630
Page 15
335
Certificate of Merit
Office Buildings
(less than 10 lakh kWh/years consumption)
INFOSYS LIMITED
Software Development Block-4 Sholinganallur, Chennai (Tamil Nadu)
Unit Profile
Infosys campus in Sholinganallur was established in the year 2000-2001 and has
been developed in a phased manner. Company is servicing fortune 500 global clients
from this location. There has been series of energy conservation and drive taken up
to ensure optimum energy utilization.
ENERGY CONSUMPTION
Year
Total electricity
consumption/ Total built-
up area (kWh/m2)
% Reduction over
2013 - 2014
2012-13 157.8 --
2013-14 115.3 26.9%
Page 16
336
HVAC ENERGY PROFILE
BUILDING AREA AND CONNECTED LOAD DETAILS
Building Area and Connected Load 2012-13 2013-14
Total Built up Area (in m2) 7353 7353
Air-conditioned area (in m2) 6618 6618
Non-Air conditioned area (in m2) 735 735
Total Connected Load (in kW) 891 615
Average power factor for the period 0.99 0.99
Building operating hours 10 10
ENERGY CONSERVATION PROJECTS IMPLEMENTED
The Infosys Shols campus underwent major energy efficiency retrofits over the
period of past one and half years in almost all the key energy intensive areas. The
Software Development Block 4 (SDB 4) is one of the office buildings where most of
157.8
115.3
0
20
40
60
80
100
120
140
160
180
2012-2013 2013-2014
kWh/m2
2012-2013 2013-2014
153317
94115
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
2012-2013 2013-2014
kWh/m2
SDB-4
2012-2013 2013-2014
Page 17
337
the ECMs have been implemented. Below are the major re-engineered areas in the
aspect of our building energy efficiency & environmental quality enhancement
program
• Operational optimization at chiller plant – Best operational methods implemented
to achieve the maximum efficiency with minimum energy.
• Building Lighting system - Replaced the existing entire lighting fixtures with LED
fixtures for lux level enhancement and energy conservation
• Converted conventional UPS with modular UPS.
• Re-commissioning of AHU VFDS, ACTUATORS AND SENSORS
• Converted all DX units into Chilled water split units
Best operational practices implemented in B4
ECM 1 – Operational optimization at chiller plant
The following are the new activities have been adapted in central air-conditioning plant:
Operational optimization at chiller plant
1. VFD’s operational settings redefined with respect to Chiller operation:
Based on recorded operational pattern company found that Condenser and chilled
water pumps were operating in a uniform pattern and the necessary modulations
were not happening properly as per low side load variations. VFD was introduced
with appropriate settings done to meet out the highest efficiency of the chiller and
its accessories with proper modulations on the flow pattern.
2. Cooling towers efficiency improvement:
Based on the evaluation company found that the existing cooling towers
effectiveness was 28-36%. It was decided to go with new cooling towers of 3 x 500
TR Capacity in terms of latest construction model with 58.8% effectiveness to
improve the plant efficiency.
3. Chiller:
Chillers are the highest energy consuming equipments in air conditioning systems.
With the help of detailed study, the new Chiller selection was done for 6.4 COP from
the earlier levels of 3.6-4 COP. The Chiller alone improves the efficiency by 38%.
4. Auto tube cleaning System:
Company has installed auto tube cleaning system (ATCS) on condenser line of the
new Chiller to eliminate the scales accumulation. ATCS will help to remove the soft
scales at regular intervals before it become hard scale formation in tubes.
5. Plant manager:
The objective of Chiller plant manager (CPM) for existing Chiller plants is to integrate
all the plant equipment, incorporation of automated energy saving algorithms to
reduce consumption, eliminate wastage and improve Chiller plant overall efficiency.
CPM will also provide a lot of real time and historical energy and efficiency data to
manage the Chiller plant consumption effectively.
Page 18
338
On annual basis kWh
Energy consumption before
2012-2013
153317
Energy consumption after 2013-
2014
94115
ECM 2 - Replaced the existing entire lighting fixtures with LED fixtures for lux level enhancement and energy conservation
The main objective of this retrofit is to enhance the lux level of the present lighting
system to meet the IEQ (Indoor Environmental Quality) standards without any
further increase in connected load. A detailed study had been conducted on campus
lighting system and the actual lux levels of various work stations are mapped. Based
on the study outcome, the right LED lighting fixtures had been selected. The savings
is as follows.
On annual basis kWh
Energy consumption before
2012-2013
98335.1
Energy consumption after
2013-2014
78335
ECM 3 – Replaced conventional UPS with Energy Efficient modular UPS
In conventional design UPS system use to design for backup of the computers/IT
equipment during power failure or power change overs with several UPS units in
parallel mode or hot standby arrangement based on the redundancy requirements.
With the conventional design if you need 2 UPS units to back up the critical load the
3rd UPS would be required to create a redundancy (N+1 configuration).
In addition the UPS units use to design considering the old technology computers
which had an operating load of 200 to 250 Watts per computer. Over years of
technology change & push towards energy efficiency the computers became very
efficient by 2x (100–125 Watts per computer). However UPS units are not being
looked at, hence, they have become power consuming devices instead of backup
units.
Under these conditions UPS systems are under loaded and overall efficiency of UPS
is also very low in part loads. To overcome this challenge and to reduce energy
consumption, campus started regrouping the UPS system capacity and design with
latest technology of modular UPS system. Where the entire unit works as a single
backup source with multiple smaller capacity UPS modules connected in parallel.
Because of inbuilt modular design of the unit campus can reduce the installed
capacity up to 40%. Also campus can increase the loading on the entire UPS system
all the time as the system has in built intelligence to operate only the required
number of modules based on load. The modular UPS not only helps in reducing the
total installed capacity but also help to increase the load based on increase in
business requirement.
Page 19
339
Campus has achieved a 20% reduction in UPS connected. The new modular UPS
systems have 93% efficiency, compared to the older 78% efficiency systems. About
210 kW Modular UPS are connected. The reduction in SDB 5 UPS systems energy
consumption as follows,
On annual basis kWh
Energy consumption before 2012-2013 431635
Energy consumption after 2013-2014 398800
ECM 4 –Re-commissioning of AHU VFDs, Actuators and Sensors
The entire HVAC system had been re-commissioned to achieve high level of energy
efficiency. The below mentioned savings had been realized in SDB 4
On annual basis kWh
Energy consumption before 2012-
2013
145596
Energy consumption after 2013-2014 78387
ECM 5 – Converted all DX units into water based cassette units
Switched off all DX units and operating chilled water based cassette units in Server
room, Despatch, Telephone room and Meeting room to conserve energy.
On annual basis kWh
Energy consumption before 2012-2013 196982.4
Energy consumption after 2013-2014 107604
Page 20
340
Certificate of Merit
Office Buildings
(less than 10 lakh kWh/years consumption)
INFOSYS LIMITED
SOFTWARE DEVELOPMENT BLOCK-6 Sholinganallur, Chennai (Tamil Nadu)
Unit Profile
Infosys campus in Sholinganallur was established in the year 2000-2001 and has
been developed in a phased manner. Company is servicing fortune 500 global clients
from this location. There has been series of energy conservation and drive taken up
to ensure optimum energy utilization.
ENERGY CONSUMPTION
Year
Total electricity
consumption/ Total built-
up area (kWh/m2)
% Reduction over
2013 - 2014
2012-13 137.4 --
2013-14 100.9 26.6%
137.4
100.9
0
20
40
60
80
100
120
140
160
2012-2013 2013-2014
kWh/m2
2012-2013 2013-2014
Page 21
341
BUILDING AREA AND CONNECTED LOAD DETAILS
Building Area and Connected Load 2012-13 2013-14
Total Built up Area (in m2) 7353 7353
Air-conditioned area (in m2) 8618 8618
Non-Air conditioned area (in m2) 735 735
Total Connected Load (in kW) 841 538
Average power factor for the period 0.99 0.99
Building operating hours 10 10
SDB-6 ENERGY CONSERVATION PROJECTS IMPLEMENTED:
ECM 1 – Operational optimization at chiller plant:
• VFD’s operational settings redefined with respect to Chiller operation
• Cooling towers efficiency improvement
• Selection of efficient Chiller
• RO Water quality for chiller and condenser
• Auto condenser tube cleaning System
ECM 2 - Replaced the existing entire lighting fixtures with LED fixtures for
lux level enhancement and energy conservation
ECM 3 – Replaced conventional UPS with Energy Efficient modular UPS
ECM 4 –Re-commissioning of AHU VFDs, Actuators and Sensors
ECM 5 – CENTRALIZED AIR CONDITIONING DUCT EXTENDED TO MANAGER
CABINS AND CONVERTED ALL DX UNITS INTO WATER BASED CASSETTE
UNITS.