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California's Energy Efficiency Standards for
Residential and Nonresidential Buildings
Title 24, Part 6, of the California Code of Regulations
The Energy Efficiency Standards for Residential and Nonresidential Buildings were established in 1978 in response to a legislative mandate to reduce California's energy consumption. The standards are updated periodically to allow consideration and possible incorporation of new energy efficiency technologies and methods.
Current Standards - Effective through July 31, 2009
2005 Standards - Went into effect October 1, 2005, and supersede the 2001 Standards. Projects that apply for a building permit on or after this date must comply with the 2005 Standards.
Adopted Amendments, Cool Roof Coatings Performance Requirements, Effective September 11, 2006.
2008 Standards - Effective August 1, 2009
The 2008 rulemaking process has been completed.
The Energy Commission adopted the 2008 Standards on April 23, 2008, and the Building Standards Commission approved them for publication on September 11, 2008.
The effective date for the 2008 Building Energy Efficiency Standards has been changed from July 1, 2009 to August 1, 2009. The Energy Commission has agreed to a California Building Standards Commission request that all parts of the California Building Standards Code (Title 24), including our Building Energy Efficiency Standards, be effective on August 1, 2009 so that the entire code update will have the same effective date.
These new Standards will be in effect as of August 1, 2009. The requirement for when the 2008 Standards must be followed is dependent on when the application for the building permit is submitted. If the application is submitted on or after August 1, 2009, the 2008 Standards must be met.
California's building efficiency standards (along with those for energy efficient appliances) have saved more than $56 billion in electricity and natural gas costs since 1978. It is estimated the standards will save an additional $23 billion by 2013.
The current 2005 standards and the 2001 Standards may be downloaded from the Web pages listed above, or to obtain a hard copy, contact the Energy Commission's publications unit at 916-654-5200.
If you have questions about Title 24:
Energy Efficiency Hotline
E-mail: title24@energy.state.ca.us
Phone: 916-654-5106 or
Phone: 1-800-772-3300 (toll free in Calif.)