Impact Analysis: 2022 Update to the California Energy Code

This report estimates the energy and greenhouse gas emissions impacts of the 2022 Building Energy Efficiency Standards (Energy Code). The 2022 Energy Code was adopted by the California Energy Commission (CEC) on August 11, 2021, approved by the California Building Standards Commission on December 14, 2021, and went into effect on January 1, 2023. The analysis in this report compares the prescriptive and mandatory requirements of the 2019 Energy Code with the prescriptive and mandatory requirements of the 2022 Energy Code. This analysis considers 16 distinct California climate zones and uses various prototypical building energy models to represent California’s building stock in the residential, multifamily, and nonresidential building sectors.