SUSTAINABILITY @ Infosys

SUSTAINABILITY @ Infosys
Driven by Values
2
Clean energy for all
 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
 Infosys unit cost of electricity is rising at an average rate of 8% YOY
Can we lead the way in addressing the energy problem ?
Source: McKinsey report on India, DGCIS, Govt. of India
3
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 ?
Source: www.teriin.org; www.worldometers.info
www.globalchange.umich.edu
4
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
Are we doing enough?
What are the goals would you propose for a company like Infosys?
6
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
Environmental SUSTAINABILITY
Powered 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
Optimization
strategy
Passive design
Day lighting and energy simulation
Controls
Lighting
energy
Lighting Optimization
Efficient light source
Efficient fixtures
Day lighting strategies
Artificial lighting simulation
11
>80% of Occupied Space should be Day Lit
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
Optimization
strategy
Air-conditioning
energy
(HVAC)
HVAC Optimization
Optimization
strategy
Air-conditioning
energy
(HVAC)
Reduce Heat Gain
Continuous monitoring
Control strategy
Energy simulation
HVAC Optimization
Efficient equipment
Efficient heat transfer mechanism
Efficient system
Equipment configuration
Reduce heat gain
35 0C
24 0C
 Efficient building envelope
2.0 w/m2 deg K
- Wall Insulation (u value less than 0.4 w/m2 deg K)
- Roof Insulation (u value less than 0.35 w/m2 deg K)
Heat ingress through standard wall
- Efficient glazing with low SHGC and u value
(SHGC less than 0.2 and U value less than 1.2 w/m2 deg K)
35 0C
 Integrated design approach
24 0C
0.4 w/m2 deg K
- Performance based, common goal for entire design team
- E.g External heat gain not to exceed 1 watt/sqft
Heat ingress through efficient wall
5 times more efficient
Better buildings with lower cost
New
Old
Glass cost
` 230 per sq.ft
Glass cost
` 225 per sq.ft
Heat ingress from glass
3.8 W/sq.m
Heat ingress from glass
1.1 W/sq.m
19
Energy simulation
Thermal 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
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Cooling / Heating Strategy from Old Monuments
Thermal energy stored in thick walls and floors
Thermal mass cooled by flowing Yamuna water
Efficient Heat transfer
Pumping Air Vs. Water for
same cooling capacity
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
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
Chiller
Cooling tower
HVAC low side
AHUs + HRW
Radiant piping, acc. + installation
3,145,200
1,306,400
22,838,756
5,118,200
0
Chiller
Cooling tower
HVAC low side
AHUs + HRW + DX unit
Radiant piping, acc. + installation
BMS
Total cost
Area (SF)
6,184,000 BMS
38,592,556 Total cost
120,000 Area (SF)
322 Rs./sqft
Rs./sqft
63 Rupees = US$ 1
Cost in Rs
3,145,200
1,306,400
15,310,396
2,878,900
9,075,760
6,584,000
38,300,656
120,000
319
Efficient equipment configuration
500 usgpm
Chiller 1
 Cooling is achieved in 2 smaller
steps instead of 1 big step
500 usgpm
Chiller 2
 7 % more efficient than regular
chillers arrangement
Standard design
8 0C
15 0C
1000 usgpm
Chiller 1
Chiller 2
11.5 0C
8 0C
Series – Counterflow design
15 0C
Efficient equipment
Chillers with magnetic bearings
8 % higher efficiency than regular chillers



Magnetic levitation
Very low friction
No oil required
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
Optimization
strategy
Results in ‘4x’
reduction in air
conditioning
energy
Reduce Heat Gain
10%
10%
Continuous monitoring
10%
Control strategy
8%
Energy simulation
5%
Efficient heat transfer mechanism
HVAC Optimization
Efficient equipment
Efficient system
15%
Equipment configuration
7%
10%
33
Energy Efficiency @ Infosys
Per Capita Energy Consumption
350
300
297
266
239
250
40%reduction
230
203
200
Avg. Monthly kWh / employee
178
150
100
50
0
2007‐08
2008‐09
2009‐10
2010‐11
2011‐12
2012‐13
34
Growth from 2008 to 2013
93%
16%
Increase in no. of
employees in India
over 5 years
Absolute Increase in
electricity consumption
in 5 years
35
Impact of Energy Efficiency
BAU Vs Actual energy consumption
Energy consumption (Million units)
450
437
392
400
342
350
40% less
309
465 million units
289
300
250
BAU
225
259
265
268
262
249
200
2007‐08
2008‐09
2009‐10
2010‐11
2011‐12
2012‐13
Actual
36
Impact of Investment in Green initiatives?
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
37
In 2007-08
Building energy: 200 units/sqm per year
• Average for software buildings (incl. lights, AC, computers, etc.)
Lighting design: 1.2 W/sqft
• Average for software buildings across campuses
AC design: 350 sqft per TR
• Average installed cooling capacity across campuses
Electrical design: 6.5 W/sqft
• Total electrical load for software buildings including chiller plant
38
In 2012-13
55% lower
Building energy: 90 units/sqm per year
• Average for software buildings (incl. lights, AC, computers, etc.)
62% lower
Lighting design: 0.45 W/sqft
• Average for software buildings across campuses
36% lower
AC design: 550 sqft per TR
• Average installed cooling capacity across campuses
Electrical design: 3.5 W/sqft
• Total electrical load for software buildings including chiller plant
46% lower
Impact of new design on first and operating cost
Infrastructure required for 1 million sqft,
Sl. No.
System Description
Units
New designs Old designs Conventional
at Infosys
at Infosys
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
Increase in efficiency without increase in first cost
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
41
Solar power plants @ Infosys
Infosys Jaipur
Infosys Chennai
Continuous optimization through central command center
Efficient building
(Managed by experts)
Standard building
(Managed by standard AMCs)
Electricity
Electricity
Renewable energy
Renewable energy
Water
Water
Operations driven by performance parameters
10% more efficient than standard operations
Operations limited to functional
parameters
43
Water Sustainability
Ajit Ninan
(Source: The Times Of India Group) © BCCL
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
•The
4 reservoirs
built
in sequestered
Hyderabadin–our
potential
capacityisof
130 Million
litres
amount of rain
water
Indian campuses
estimated
at more
than
4.3 Billion litres every year; which is about 123% of our annual water consumption
44
Recharging the shallow aquifer
Onsite Ponds/Lakes
47
Impact of Water Efficiency Initiatives
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
52
Waste to energy converter
Oil (47%)
Granulated,
-
Plastic waste
Rubber waste
Non-recyclable
mixed waste
Petroleum Gas (18%)
Char (35%)
53
Output from converter
53
CFL and tube light recycling system
Recovers mercury vapor
which is sent to recyclers
Discarded tube lights
and CFLs
Contain mercury vapor
which is very toxic.
Mercury can get into
human body through air,
water, food chain and
adversely affects health
54
Separates glass, plastic
and metal components
from hazardous material
to enable recycling
54
55
Biogas plant at Mysore DC
500 kgs of organic
waste per day
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)
Questions
© 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 change
without notice. Infosys acknowledges the proprietary rights of other companies to the trademarks, product names and such other intellectual property rights mentioned in this document. Except
as 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.
Thank You
© 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 change
without notice. Infosys acknowledges the proprietary rights of other companies to the trademarks, product names and such other intellectual property rights mentioned in this document. Except
as 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.