Energy performance of Indian Commercial buildings Outline What

Energy performance of Indian Commercial buildings

Outline • What is energy performance index for commercial buildings • Commercial building energy performance – ECO-III Benchmarking study – IGBC rated buildings – BEE star rated buildings

What is energy performance index for commercial buildings Renewable electricity Grid Electricity Main Meter DG Electricity Total electricity Built-up area (m 2) Source: BEE Star rating for Office Building & BEE Star rating for BPO

EPI of Commercial Building (2011) 378 Multi Specialty Hospitals (378) 349 Three Shift Office Buildings (349) 279 258 149 252 4 & 5 Star Hotels (279) Shopping Malls (252) 141 One Shift Office Buildings (149) 115 88 Source: ECO-III Study on “Energy use in commercial buildings – National benchmarking study” (2011)

EPI of Office Buildings Sources: - ECO-III Benchmarking study - IGBC rated buildings - BEE star rated buildings

BEE Star Rating for office building 180 155 130 105 80

EPI of IGBC rated office buildings Do not qualify for BEE star rating Do not get good BEE star rating

Click to edit Master title style EXAMPLES OF ENERGY EFFICIENT OFFICE BUILDING

Institute of Rural Research and Development (IRRAD), Gurgaon • Day-use office building • Built-up area: 7069 m 2 • EPI: 48 k. Wh/m 2. y Source: Ashok B Lall Architects

Infosys, SDB 1, Pocharan Campus, Hyderabad • Day-use office building • Built-up area: 11, 600 m 2 • EPI: 86 k. Wh/m 2. y Source: Infosys (2011 -12 data)

Infosys Journey towards Energy Efficiency Source: Infosys

Click to edit Master title style BPO BUILDINGS

Performance indicator for BPO • Annual Average hourly Energy Performance Index (AAh. EPI) (Wh/h. m 2)

BEE Star Rating for BPO building 35 30 25 20 15

Performance of BEE Star BPO Buildings & IGBC rated Tech Parks Do not qualify for BEE star rating Source: BEE Star rating of BPO buildings (2011 data) & IGBC rating for Tech Parks (2012 data)

Summing up • Green rating may not be sufficient to ensure energy efficiency in the buildings • Need for absolute benchmarking for energy performance – Type of building – Performance indicator (AAh. EPI OR EPI) • Start with high energy performance benchmarks (e. g. BEE 5 -star rating OR best energy efficient buildings)

Click to edit Master title style THANK YOU !