ENERGY EFFICIENCY INTERVENTIONS AT NITI AAYOG BUILDING OVERVIEW

ENERGY EFFICIENCY INTERVENTIONS AT NITI AAYOG

BUILDING OVERVIEW Location: NITI Aayog, New Delhi Climate Zone: Composite Temperature range: 8°C to 42°C (typical average) Built up area: 23, 116 m 2 Number of floors: 6 floors (ground+five floors) Conditioned area: 15, 206 m 2 Electricity connected load: 1218 k. W (Contract Demand: 1344 k. VA, as per electricity bill 2016) Transformers: 2 X 1000 k. VA, DG Sets: 320 k. VA (two), 110 k. VA (one) and 100 k. VA (one) Building use: Office space (public) Building owner: Administered under Central Public Works Department (CPWD), Government of India Financing: ESCO mode investment Total annual energy bill before retrofit: ₹ 16, 700, 000 (in 2013 -2014) Energy Performance Index before interventions: 129. 75 k. Wh/m 2/annum, BEE- 3 Star rating in May 2013

INTERVENTION 1 – RETROFITTING (PHASE-I) ▸ Project Completion Year - 2014 ▸ Targeted Area - Fans, Lights, HVAC [old room air conditioners (windows/split)], Pumps and Power Factor Improvement ▸ Expenditure - Rs. 84. 60 Lakhs plus 12% service charges plus taxes ▸ Annual Savings (% k. VAh reduction) - 42. 6% ▸ Expected Payback: < 2 years ▸ Present Energy Performance Index – 72. 72 k. Wh/m 2/annum

Energy Conservation Retrofit Measures Phase-I Air Conditioner Units # 37 ACs were retrofitted (by BEE 5 -star rated new units) - 15 (1. 5 TR) windows - 22 split ACs LED lights # 2, 176 lighting points replaced with LED retrofits # 591 old fans replaced with BEE 5 star fans # 1 pump (15 HP) was replaced by an energy efficient 12. 5 HP pump Existing capacitor system was augmented for the improvement Ceiling fans Water Pumps Power Factor improvement

PHASE 1 INTERVENTION 1 - ESCO MODEL (RETROFIT)

PHASE 1 INTERVENTION 2 - (SOLAR PV INSTALLATION) ▸ Project Completion Year - 2014 ▸ Installed Capacity - 78. 24 k. Wp (Azure Power) ▸ Expenditure - Rs. 55, 040/- + 8% admin charges ▸ Subsidy - 30% borne by SECI; Final cost amounts to Rs 38, 88, 528/- ▸ Generation in 2016 – 90, 453 k. Wh ▸ Estimated Payback - 7 years

PHASE 2 & 3 RETROFITTING ▸ PHASE 2 ▸ Deemed saving ESCO model with 100% financing by EESL thru CPWD ▸ Targeted Areas ▸ Under this phase old ductable AC units (cumulative of up to 120 TR of operating load) were replaced with two screw-chiller based centrally air conditioning plants. ▸ Leftover corridor & compound lighting. ▸ Progress - Completed in April 2017 ▸ PHASE 3 ▸ Old Central Air Conditioners with high operating and maintenance cost will be replaced.

CONCLUSION ▸ ESCO model helped us to execute the energy efficiency project by taking away the initial cost burden from NITI Aayog. ▸ Apart from direct energy and cost savings, indirect benefits like reduction in AMC and O&M expenditures were also achieved. ▸ EESL took care of the procurement of replaced equipment and also their maintenance for next five years as per the performance contract. ▸ Now this project serves as a demo for other Government Buildings to replicate energy efficiency retrofit projects.

THANK