California’s Title 24 Resources
A Quick-Access Guide to California’s Title 24 energy requirements
California became the first state to implement minimum energy efficiency standards in 1974. The California Energy Commission was created then to oversee the implementation of the new laws. The standards, referred to as Title 24, were updated in 2008 and again in 2019.
For a complete outline of Residential and Nonresidential compliance codes, download any of the Compliance Manuals below (effective January 1, 2020):