IndiaNational

Energy Conservation Building Code 2007

The Energy Conservation Building Code (ECBC) was developed by the Govt. of India for new commercial buildings and released on 27th May 2007.  ECBC sets minimum energy standards for commercial buildings having a connected load of 100kW or contract demand of 120 KVA and above. While the Central Government has powers under the EC Act 2001, the state governments have the flexibility to modify the code to suit local or regional needs and notify them. Presently, the code is in voluntary phase of implementation. About 22 states are at various stages of mandating ECBC, wherein most of building construction activities are happening across the country.

(source: https://beeindia.gov.in/content/ecbc) 

Applicable Building Type(s)

New non-residential

Policy Requirement Level

Model Code

Policy Sequence

Governance

Development Authority: Bureau of Energy Efficiency (BEE), Ministry of Power, Government of India with support from USAID ECO II Project

Implementation Authority: Bureau of Energy Efficiency (BEE), Ministry of Power, Government of India with support from USAID ECO II Project

Enforcement Authority: Bureau of Energy Efficiency (BEE), Ministry of Power, Government of India with support from USAID ECO II Project

Prescriptive Compliance path

Energy Requirements:

Insulation

 

24-hour use buildings

Daytime use buildings

Maximum U-Factor of overall assembly (W/m2.C)

Walls

Roof

Walls Roof

Climate zone Composite

0.440

0.261

 0.440

0.409

Climate zone Hot Dry

0.440

0.261

 0.440

0.409

Climate zone Hot Humid

0.440

0.261

 0.440

0.409

Climate zone Moderate

0.431

0.409

 0.397

0.409

Climate zone Cold

0.369

0.261

0.352  0.409

 

Windows

Windows

Maximum U-factor

(W/m2.C)

Maximum SHGC

Climate zone Composite

3.30

0.25

Climate zone Hot Dry

3.30

0.25

Climate zone Hot Humid

3.30

0.25

Climate zone Moderate

6.90

0.40

Climate zone Cold

3.30

0.51

 

Skylights

Skylights

Maximum U-factor

(W/m2.C)

Maximum SHGC

Climate zone Composite

11.24

0.40

Climate zone Hot Dry

11.24

0.40

Climate zone Hot Humid

11.24

0.40

Climate zone Moderate

11.24

0.61

Climate zone Cold

11.24

0.61

 

Air Leakage

The following areas of the enclosed building envelope shall be sealed, caulked, gasketed, or weather-stripped to minimize air leakage: 

(a) Joints around fenestration and door frames,

(b) Openings between walls and foundations and between walls and roof and wall panels,

(c) Openings at penetrations of utility services through roofs, walls and floors, 

(d) Site-built fenestrations and doors. 

(e) Building assemblies used as ducts or plenums, and 

(f) All other openings in the building envelope. 

Ventilation System

Natural ventilation shall comply with the design guidelines provided for natural ventilation in the National Building Code of India 2005 Part 8, 5.4.3 and 5.7.1.1

Space Cooling System

 

 

Chillers

Minimum COP

Minimum IPLV

Air Cooled Chiller <530 kW (<150 tons) 

2.90

3.16

Air Cooled Chiller >=530 kW (>=150 tons) 

3.05

3.32

Centrifugal Water Cooled Chiller <530 kW (<150 tons) 

5.80

6.09

Centrifugal Water Cooled Chiller >=530 and <1050 kW (>=150 and < 300 tons) 

5.80

6.17

Centrifugal Water Cooled Chiller >=1050 kW (>=300 tons)   6.30 6.61
Reciprocating Compressor Water Cooled Chiller   4.20  5.05
Rotary Screw and Scroll Compressor Water Cooled Chiller <530 kW (<150 tons)   4.70  5.49

Rotary Screw and Scroll Compressor Water Cooled Chiller >=530 and <1050 kW (>=150 and < 300 tons) 

 5.40  6.17

Rotary Screw and Scroll Compressor Water Cooled Chiller >=1050 kW (>=300 tons)  

5.75

6.43

 

Water Heating System

Residential facilities with a centralised system shall have solar water heating for at least 1/5 of the design capacity. Service water heating equipment will require performance and minimum efficiency with respect to Indian Standards

Lighting

Interior Lighting Power - Building Area Method

Building Area Type

LPD

(W/m2)

Building Area Type

LPD

(W/m2)

Automotive Facility

9.7

Office

10.8

Convention Center

12.9

Parking Garage

3.2

Dining: Bar/Lounge

14.0

Theater-Motion Picture

12.9

Dining: Cafeteria/Fast Food 15.1 Theater-Performing Arts 17.2
Dining: Family 17.2 Police/Fire Station 10.8
Dormitory/Hostel 10.8 Post Office/Town Hall 11.8
Gymnasium 11.8 Religious Building 14.0
Healthcare-Clinic 10.8 Residential-Multifamily 7.5
Healthcare-Hospital 12.9 Retail/Mall 16.1
Hospitality-Hotel 10.8 School/University 12.9

Hospitality-Motel

10.8

Sports Arena

11.8

Library

14.0

Transportation Building

10.8

Manufacturing Facility

14.0

Warehouse

8.6

Museum

11.8

Workshop

15.1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LPD = Lighting Power Density

In additon to the Building Area Method, a Space Function Method can be used for more detailed calculations by individual space types within buildings. 

Renewable Energy

Residential facilities with a centralised system shall have solar water heating for at least 1/5 of the design capacity. Service water heating equipment will require performance and minimum efficiency with respect to Indian Standards

Performance Compliance path

Energy Requirements:

Resources

Notes

Climate zones