Bureau of Energy Efficiency (BEE)

Energy Conservation Building Code (ECBC)

ECBC sets minimum energy-performance requirements for the design and construction of buildings under the Energy Conservation Act, 2001. ECBC 2017 applies to commercial buildings with connected load of 100 kW or more or contract demand of 120 kVA or more. States must notify it as their own rules, and the 2022 Amendment Act is moving it to an Energy Conservation and Sustainability Building Code and making the residential Eco Niwas Samhita mandatory. Compliance is checked through the state nodal agency or urban local body during building approvals.

We help developers and architects identify applicability, choose a compliance approach, document envelope, HVAC, lighting and electrical systems and submit for approval.

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Service Overview

What is Energy Conservation Building Code (ECBC)?

The Energy Conservation Building Code (ECBC) is a national code developed by BEE, first launched in May 2007, updated in 2017 and amended in 2020, that defines minimum standards for building envelope, comfort systems and controls, lighting and controls, and electrical and renewable energy systems. It offers three compliance approaches: Mandatory, Prescriptive and Whole Building Performance, and ‘ECBC Plus’ and ‘Super ECBC’ levels for higher performance.

States have the flexibility to modify the code and must notify rules to enforce it. As of the sources, about 23 of 28 states had notified ECBC rules, with only 15 on ECBC 2017, and states such as Gujarat and Maharashtra were yet to notify. One source also mentions a built-up area of 1,000 sq m as a trigger, which should be confirmed with the state.

Energy Conservation Building Code (ECBC)

Who Needs This Service

Developers, architects, hotel, hospital, office and mall builders and owners of commercial buildings above the load thresholds, and state urban authorities enforcing the code, need ECBC compliance.

Existing buildings whose load rises to the threshold must comply.

Green-building projects often go beyond ECBC.

If your state has not notified ECBC, check local rules.

Key Benefits

Compliance with ECBC for building approvals
Applicability and approach identified
Documents and simulations prepared
State agency submission
Energy savings over the building's life

Next Steps & Related Services

After approval, implement design and maintain records. Related services: Star Labelling, Trade License, RERA and ISO certification.

Common Mistakes

Ignoring state notification.
Wrong compliance approach.
Poor documentation.
Late consultant involvement.
Overlooking load thresholds.

Timeline, Costs & Practical Tips

Approval timing follows building plan approval.

Practical tip: engage an ECBC consultant at design stage.

Additional Information

The Energy Conservation Act, 2001 and its 2022 amendment support building energy codes.

Practical Scenarios

Scenario 1:

A mall developer complies.

Scenario 2:

A hotel uses whole building simulation.

Scenario 3:

A hospital checks thresholds.

Written By

Raghav Sharma

Operations Executive

10+ Years Experience

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Raghav Sharma has 10+ years of experience covering Company Registration - Operation, MCA Services - Operation, Corporate Operation, Import Export Services - Operation, Goverment Licence Services - Operation, FSSAI - Operation, SEBI - Operation, Labour Compliance - Operation, Fund Raising - Operation, Licence & Certificate - Operations.

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Frequently asked questions

Need clarity?

Which buildings are covered?

Commercial buildings with 100 kW connected load or 120 kVA contract demand.

Who enforces ECBC?

States, through notified rules.

What are the compliance approaches?

Mandatory, Prescriptive and Whole Building Performance.

What is Eco Niwas Samhita?

The residential building code made mandatory by the 2022 Amendment Act.

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