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CII 18th National Award for

Excellence in Energy Management - 2017

ICICI Bank Zonal Office Ambattur, Chennai

August 30 & 31, 2017

2

Ambattur Tower

Year of occupation 2008

Area 14307 Sq.M.

No. of floors G + 5

No. of work stations 2375

Air cooled chillers 3 x 263 TR

Diesel Generator 2 x 625 kVA

1 x 250 kVA

UPS 2 x 120 kVA

Transformer 1000 kVA

Total connected load 950 kW

3

Beginning of Journey

Description FY 2014

Annual consumption Lac kWh 18.44

Annual Cost Rs. Lac 206.70

EPI 206EPI needs

reduction

Systematic Approach – Energy Management Plan

Employee comfort is not compromised

Energy Audit

Eliminate Wastage

Optimise Capacity

Investment

Type of load Working

kW

HVAC 356

IT 40

Others /

Utilities /

Pumps

160

Lighting 60

Total 616

Energy Distribution Profile

5

Brainstorming and Action

Use less energy

Use energy efficiently

Use renewable energy

Active participation of

Employees and Facility

Managers

Road Map

• Identification – Power Crisis

• Energy Management

• Audit and Analysis

Step 1- Identify

2014

• Establish measurement systems

• Equipment optimisation

• Low investment projects

Step 2-

Consolidate & Synergise

2015

• Continue past initiatives

• Involve mass participation

• Alternate source of energy

Step 3 -

Institutionalise

2016

• Involving business partners

• Safe and sustainable workspace culture

• Giving back to society - CSR

Step 4-

Spreading

2017

7

UPS Optimisation

Units Savings:

15000 kWh / Yr

Primary UPS - 5x120 KVA

Battery Bank – 100AHx32x5

Charging battery – 100AHx32x3

Server UPS – 2x30 KVA

Battery Bank – 100AHx30x2

Before

UPS post optimisation - 2x120 KVA

Battery Bank – 100AHx32x2

After

8

DG Optimisation

Units Savings:

140000 KWh / Yr

Before

After

Office Hours DG – 1x 625KVA

9am to 6pm

Post office Hours DG – 1x625KVA

6pm to 9pm

Consumption – 300 KWh

Office Hours DG – 1x 625KVA

Post office Hours DG – 1x250KVA

Consumption – 120 KWh

9

Other ProjectsOptimisation of HVAC

Lighting control

Annual Savings:

20000 kWh

Annual Savings:

19000 kWh

Timing Control

Alteration of set points

Thermal performance/leakages

Filter cleaning/wet servicing

Total - 2145 2x2 40W CFL

De-lamped – 545

% de-lamped – 25%

Occupancy based lighting -

Cafeteria

10

FY 14-15 FY 15-16 FY 16-17

• Inverter AC

• LED Retrofit

• HVAC

Optimisation

• Reflective

Glass

• Day light

harvesting

• Roof Top Solar

• AC Installation

• STP Integration

• UPS

Optimisation

ENCON Projects - Investment

Investment:93 Lac

Savings:290000 kWh

Investment:0.5 Lac

Savings:19000 kWh

Investment: 5.10Lac

Savings:98000 kWh

11

LED Retrofit

Load Quantity Old

wattage

New

wattage

36W TL 141 5640 2820

2x18W CFL – Spot light 749 28462 11235

2x36W CFL – 2x2 fitting 2145 158730 85800

36W CFL – Street Light 36 1368 900

Total 3071 194200 100755

LPD improvement: 52%

Savings: 2.21 Lac KWh/Yr

Investment: 82.2 Lac

Payback: 30 Months

12

MonitoringOctober – 2015

DATE KWAH PF MD Units Consumption EB

units

DG

Units

EB &

DG

Units

Remarks

1900 2300 700

1 4313640 0.99 655 4620 50 560 5230 696 5926

2 4318920 0.99 655 670 120 590 1380 284 1664

3 4320350 0.99 655 3980 560 530 5070 459 5529 Training

4 4325470 0.99 655 420 200 700 1320 483 1803

5 4326850 0.99 655 4530 220 680 5430 1189 6619

6 4332360 0.99 655 3640 790 70 4500 1448 5948 RBH meet

Trends in energy consumption and operating pattern

Specific area of energy wasted

13

Optimisation - Air Conditioning

Inverter Star Rated ACs at

24x7 ATM and Control room

Eliminate additional load on chiller operations

Trainings extended beyond office hours / holidays

Dedicated ACs installed against 263TR chiller

5.5 TR x 1 – Duct

4 TR x 3 – Cassette

AC Replacement

Annual

Savings:

24000 kWh

Annual

Savings:

23000 kWh

Specific Energy Consumption

0

1000

2000

3000

4000

5000

6000

7000

8000

9000

10000

FY13-14 FY14-15 FY15-16 FY16-17

Carpet area (Sq.m.)

0

200

400

600

800

1000

1200

1400

1600

FY13-14 FY14-15 FY15-16 FY16-17

Total no. of employees

Area and manpower increased

0

50

100

150

200

250

FY13-14 FY14-15 FY15-16 FY16-17

206184 172 160

EPI

28%

Storage pit -Connecting

5 sumps

145000 Ltrs water collected

Used for gardening

Innovative Projects

Savings:

12 tanker water

Rain Water Harvesting Day Light Harvesting

Internal benchmarking – EPI as on Mar-2017

0

50

100

150

200 We are

here

160

Road map to achieve benchmark –

FY18

HVAC Retrofit

• Chiller pipeline replacement – 54.05 Lac

• Pumps and valves – 32.83 Lac

• Expected savings – 1.02 Lac KWh

Lighting Control

• Pulling chords

• Occupancy based lighting – Workspace

• Investment – 4 Lac

Façade Replacement

• Triple barrier semi-unitized structural glazing system

• Single glazed 6mm low heat glass

• U value – 3.85 W/Sq.m K

• SHGC – 0.45

Wind Solar Hybrid

• Clean and Green Power

• Leverage – Differential unit cost

• NIL Investment

Investment: 127 Lac

Estd. Savings: 1 Lac KWh

BEE Rating

Year Scope-I Scope-II Total

FY 2013 770.11 843.98 1614.09

FY 2017 109.60 1456.40 1566.00

GHG Inventory & certification

VC facility reduced air travel –

4000 employees per year

Reduction of CO2 emission -

48 Tons

Pollution control check –

employee vehicles

Elimination of fuel

transportation losses

19

Renewable Energy – Roof Top Solar

OPEX model

Capacity – 120 kWp

Annual Generation – 1.68 Lac

kWh (9%)

8% utilization during Peak hour

Average – 4.12 kWh per day /

KWp

CO2 Abatement 138 tons per

annum

Mitigates Urban Heat Island

Effect

Cost Benefit 3.8 Lac

for 6 months

Best Practices

High temperature resistant

Control carbon emission

Humidity absorbent

Life span > 150 years

Restoration of green cover

Drain line channelized to

centralized STP of CAAIIUC

Water recycled, used for

Gardening plants in Ambattur

Savings in motor operation -

7800 KWh/Yr

Neem Tree Plantation

STP Integration

Best Practices - Green Zone

Paper reduction

Inventory rationalisation

Image based processing

Waste paper recycling

Replacement of 950 desktops with Energy star

labeled desktops and laptops

Auto switch off - Monitors

Printer with duplex printing

Recycled printer cartridges

Multifunction devices: Printer-Scanner-Photocopier

Best Practices - IT Initiatives

70% reduction in energy consumption by efficient and

optimized equipmentPhotoc

Employee Training –

Involvement in Energy

Management activities

OEM/HK/Security Training -

Energy management

No cost

Awareness campaign

Training

Energy Savings through Behavioral change

24

Thank you