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Retrofitting Mahindra TowersCase Study – Mahindra and Mahindra Limited

21st November 2015

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About Mahindra Group

A USD 16.5billion Multinational Group in business for over 70 years

Employs over 200,000 people

Presence in over 100 countries and 18 key industries

In 2014, Mahindra featured on the Forbes Global 2000

Tech M listed in DJSI 2015 World Index. M&M Ltd., Tech M and Mahindra Finance listed on DJSI-Emerging Market Index

Tech M (100), M&M(98) and Mahindra Finance(92) in CDLI by CDP

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Building and Location Mahindra Towers, Worli, Mumbai

Construction year 1985 - 1992

Building area 18,430 square meters (198,277 sq. ft)

Occupancy 1380 people

Number of wings and floors 2 wings : A Wing – 6 floors and B Wing – 7 floors

Mahindra Towers, Worli, Mumbai

The building was constructed in line with all prevailing norms and engineering

standards in 1992.

In 2009, it was decided to go for Retrofitment to use the modern techniques

in ‘Energy Conservation’ and save energy.

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Retro fitment Project

Walk through audit from ESCO

(2 days, free of cost)

Report on type of renovations, investment

and Payback period

Issuance of‘Letter of Intent’

Detailed energy audit 4 to 6 weeks with

actual measurements

Project implementation

Measurement and Verification (M & V)

1 2 3 4

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Contract with Payback period &

sharing guaranteed savings

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Retrofit Started: March 2009

Retrofit Completed: July 2009

Retrofit financing: ESCo Model of Shared Savings

ESCo selected: ENCON Energy Management Services Pvt. Ltd

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Energy Conservation Measures

Recommended by ENCON

Identified efficiency opportunities as an outcome of energy audit based on

building performance:

Electrical system: Optimize metering, power frequency stabilization, and

reduce power losses.

Lighting: Upgrade to efficient lamps and improve illumination.

Heating, Ventilation, and Air Conditioning (HVAC): Reduce heat transfer,

improve motor efficiency, automate chillers, and replace pumps in cooling

towers.

ENCON prioritized the ECMs on the basis of payback period as well as

impact on worker productivity and building aesthetics.

ECMs with a simple payback period (initial cost divided by annual energy

cost savings) of 12 months were implemented first.

Mahindra’s utility bills for a particular month in the preceding two years to

calculate base line and arrive at savings accrued post retrofitment

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1890000

4073310

Overall Cost of Retrofit Savings from Energy inFirst Year

Co

st

in R

s.

Result of Retro fitment Project

Energy Efficient

Measures

Cost in Rupees (USD)

Lighting System Rs. 14,20,000 ($29,583)

HVAC System Rs. 4,70,050 ($9,792)

Electrical System Rs. 0 ($0)

Total Rs. 18,90,000 ($39,375)

Payback period < 6 months

Av. consumption dropped by

59,207kWh per month

Eq. CO2 saved 36.6 Tons/month

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Magnetic Induction Lamps in parking

areas

Efficient AHU and VFDs

Roof top solar PVs

LED lights in building

Waste Management – converting

paper waste in to writing pads for

meetings

IGBC Certified Green Existing Building

BEE 5 Star rating

Rain Water Harvesting and use in

cooling towers for A.C.

Projects completed post retrofit Way Forward

The Journey Continues …

Before

70W Metal Halide Lamp

After

40W Induction Lamp

Mahindra Insurance Brokers Ltd:

ADDRESSING THE ENERGY CHALLENGES THROUGH ESCO MODEL

Case Study – 2

Project : LED REPLACEMENT

• Identified Concern : High cost of Electricity for MIBL Office

• Prime contributor : Lighting

• Solution : Replace existing lights by LEDs

• Decision to use ESCO Model of shared savings

• ESCO - Sipani Energy Ltd., Banguluru

• No investment by MIBL in LED Replacement

• Agreement : Share 70% Saving from electricity bills with Sipani for next 3 years

• Free replacement in case of any breakdown for a period of 3 years

LED Replacement

ExistingFittings

Total Number

Spec Power

W

Connected Load

Replaced by

Spec Power

W

Reduction in Load

(KW)

Savings (KWh/M)

4x18 W FTL with Choke

107 92 9.84 LED SQUARE-35 W

35 6.10 1342

2X18 W PL

203 45 9.14 LED 15 W DL-DN-192i

15 6.09 1340

Results and Benefits

• Total Investment by

ESCO: Rs. 11,01,285

(incl. taxes)

• Annual Savings :

Rs. 4,50,505

• Annual Savings in

electricity : 32,184 kWH

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Thank you