Since 1978, all new homes, additions and alterations to existing homes, and most commercial buildings within California are required to meet the minimum energy efficiency standards contained in Title 24, Part 6 of the California Code of Regulations. The Energy Efficiency Standards for Residential and Nonresidential Buildings were established 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.

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 August 1, 2009 to January 1, 2010.
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 January 1, 2010, 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 Certified Energy Analyst (CEA) program is a sponsored by CABEC (California Association of Building Energy Consultants) and is officially recognized by the California Energy Commission as establishing a professional standard as well as providing an important link in energy compliance. The goal of the CEA program is to assure a professional level of training, experience and ability among those individuals who perform energy calculation and prepare compliance documentation.

The CEA program is designed to benefit energy analysts and their clients in the design and construction community. Being a CEA is the best evidence that an individual can provide their clients and potential clients with expertise rooted in a depth of experience and knowledge. Certification demonstrates a commitment on the part of the energy analyst to maintain a high degree of professional excellence pertaining to the Building Energy Efficiency Standards. Separate certification is offered for the Residential and Nonresidential Standards.