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Energy Conservation Building Code (ECBC)

The Energy Conservation Building Code (ECBC) was developed by the Govt. of India for new commercial buildings on 27th May 2007.  The purpose of Energy Conservation Building Code (ECBC) is to provide minimum requirements for energy-efficient design and construction of buildings and their systems. The building sector represents about 33% of electricity consumption in India, with commercial sector and residential sector accounting for 8%and 25% respectively. Estimates based on computer simulation models indicate that ECBC-compliant buildings can use 40 to 60% less energy than conventional buildings. It is estimated that the nationwide mandatory enforcement of the ECBC will yield annual savings of approximately 1.7 billion kWh. The ECBC is expected to overcome market barriers, which otherwise result in under-investment in building energy efficiency. The ECBC was developed as a first step towards promoting energy efficiency in the building sector. The ECBC is the result of extensive work by the Bureau of Energy Efficiency (BEE) and its Committee of Experts.


The ECBC provides design norms for:

  • Building envelope, including thermal performance requirements for walls, roofs, and windows;
  • Lighting system, including day lighting, lamps and luminaries’ performance requirements;
  • HVAC system, including energy performance of air distribution systems;
  • Electrical system; and
  • Water heating and pumping systems, including requirements for solar hot-water systems.

As per the Section 15 (a) of Energy Conservation Act, 2001, the State Governments are required to amend the ECBC based on the climatic conditions of the State.


Last Modified on : 07-06-2019