Energy Performance Index for Commercial Buildings
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
Source: BEE Star rating for Office Building & BEE Star rating for BPO
Main
Meter
Renewable
electricity
Grid
Electricity
DG
Electricity
Built-up area (m
2
)
Total
electricity
EPI of Commercial Building
(2011)
Source: ECO-III Study on “Energy use in commercial buildings – National benchmarking study” (2011)
149
349
115
258
141
88
378
279
252
One Shift Office
Buildings (149)
Three Shift Office
Buildings (349)
4 & 5 Star
Hotels (279)
Multi Specialty
Hospitals (378)
Shopping
Malls (252)
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
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 kWh/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 kWh/m
2
.y
Source: Infosys (2011-12 data)
Infosys Journey towards
Energy Efficiency
Source: Infosys
BPO BUILDINGS
Performance indicator for
BPO
•
Annual Average hourly Energy Performance
Index (AAhEPI) (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 (AAhEPI OR EPI)
•
Start with high energy performance
benchmarks (e.g. BEE 5-star rating OR best
energy efficient buildings)
THANK YOU !
Energy Performance Index (EPI) is a key metric used to evaluate the energy efficiency of commercial buildings. It is calculated based on the annual grid electricity consumption, annual DG electricity consumption, and the built-up area of the building. Various studies and ratings such as ECO-III Benchmarking, IGBC ratings, and BEE star ratings provide benchmarks for different types of commercial buildings. The EPI values indicate the energy efficiency levels of buildings, with lower values representing better performance. Additionally, the EPI can help in determining eligibility for BEE star ratings and assess the energy usage of different building types.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. Download presentation by click this link. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
E N D
Presentation Transcript
What is energy performance index for commercial buildings Commercial building energy performance ECO-III Benchmarking study IGBC rated buildings BEE star rated buildings
Renewable electricity Grid Total electricity Main Meter Electricity DG Electricity Built-up area (m2) Energy Performance Index (EPI) (kWh/m2.y) =Annual Grid Electricity + Annual DG Electricity Built up area Source: BEE Star rating for Office Building & BEE Star rating for BPO
378 Multi Specialty Hospitals (378) 349 Three Shift Office Buildings (349) 279 4 & 5 Star Hotels (279) 258 252 Shopping Malls (252) 149 141 One Shift Office Buildings (149) 88 115 Source: ECO-III Study on Energy use in commercial buildings National benchmarking study (2011)
Sources: - ECO-III Benchmarking study - IGBC rated buildings - BEE star rated buildings
180 155 130 105 80
Do not qualify for BEE star rating Do not get good BEE star rating
Day-use office building Built-up area: 7069 m2 EPI: 48 kWh/m2.y Source: Ashok B Lall Architects
Day-use office building Built-up area: 11,600 m2 EPI: 86 kWh/m2.y Source: Infosys (2011-12 data)
Annual Average hourly Energy Performance Index (AAhEPI) (Wh/h.m2) EPI (kWh/m2.y) x 1000 Annual hours of operation AAhEPI (Wh/h.m2) =
35 30 25 20 15
Do not qualify for BEE star rating Source: BEE Star rating of BPO buildings (2011 data) & IGBC rating for Tech Parks (2012 data)
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 (AAhEPI OR EPI) Start with high energy performance benchmarks (e.g. BEE 5-star rating OR best energy efficient buildings)
