Building Energy Efficiency

The California Energy Commission is transforming buildings through standards and programs for newly constructed and existing buildings. Learn more about the Energy Commission’s building energy efficiency standards, benchmarking programs, efficiency for existing buildings, and resources on how to comply.

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Energy Code Support Center

Educational documents and training information for building communities and enforcement agencies to assist with building energy standards compliance.

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Program Information

Building Energy Efficiency Standards

Transforming California's buildings through standards for newly constructed buildings and alterations and additions to existing buildings.

Energy Efficiency in Existing Buildings

Achieving greater efficiency in existing buildings will require an array of creative, systemic solutions. The strategic plan will guide these efforts.

Building Energy Benchmarking Program

Reporting building characteristics and energy use data, known as benchmarking, is required for certain types of commercial and multifamily buildings.

Home Energy Rating System Program - HERS

The program addresses construction defects and poor equipment installation, including HVAC systems and insulation, by evaluating homes.

Acceptance Test Technician Certification Provider Program - ATTCP

The program ensures that lighting control and mechanical contractors comply with the Energy Standards in nonresidential buildings.

Manufacturer Certification for Building Equipment

A list of equipment, products, and devices certified to the CEC to meet the Energy Code.
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2022 Building Energy Efficiency Standards Compliance Manuals

The manuals are reference materials used to help comply with and enforce the 2022 Standards. 

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Energy Standards Savings

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A review of California’s 2016 Building Energy Efficiency Standards compared to international standards set in 2015, found a 29 percent annual energy savings from the state’s standards over international standards. California’s standards saved enough electricity to power 300,000 additional homes annually.     

Read more 2016 Building Standards