Energy Efficiency Resource Standard:

In 2006, AB 2021 called for a 10% reduction in energy consumption over 10 years. In 2015, SB 350 set a goal to double statewide energy efficiency savings in electricity and natural gas end uses by 2030 relative to 2015 levels. The CEC issues an Integrated Energy Policy Report and EE Action Plan updates every three years.

Building Codes:

The Building Energy Efficiency Standards (Title 24, Parts 6 and 11) are updated every three years by the California Energy Commission. The 2025 Energy Code (effective January 1, 2026) expands heat pump requirements across building types, mandates battery energy storage for new nonresidential buildings with required PV systems, and imposes high efficiency retrofit requirements for rooftop HVAC equipment at end of life in retail, school, office, and library buildings.

Appliance Standards:

California was the first state to adopt appliance energy efficiency standards in 1974. Federal standards have since preempted certain categories. California maintains appliance regulations covering 15 categories of energy and water appliances under Title 20.