Single-Family Residential, 2025 Energy Code
| Program Name | Research Versions Available | Contact Information | Additional Information |
|---|---|---|---|
| California’s Building Energy Code Compliance Software – Residential (CBECC-Res) | CBECC-Res 2025.1.0 Release Candidate (RC) contains the updated 2025 Energy Code modeling rules as described in the 2025 Single-Family Residential Alternative Calculation Method Reference Manual which includes updated 2025 Energy Code standard designs, 2025 Long-term System Cost factors, 2025 hourly source energy, 2025 Peak Cooling metric, and 2025 weather data. CBECC-Res 2025.1.0 Release Candidate (RC) provides a preview of the final 2025.1.0 compliance software, is for review and testing only, and is not usable for compliance. Latest Research Version | California Energy Commission Building Standards Office 715 P Street, MS 37 Sacramento, CA 95814 ATTN: Thao Chau 916-776-7974 cbecc.res@energy.ca.gov | See the CBECC-Res Website for:
Support: cbecc.res@energy.ca.gov |
Nonresidential and Multifamily, 2025 Energy Code
| Program Name | Compliance Software Versions | Contact Information | Additional Information |
|---|---|---|---|
| California’s Building Energy Code Compliance Software (CBECC) | CBECC 2025.1.0 Release Candidate (RC) contains the updated 2025 Energy Code modeling rules as described in the 2025 Nonresidential and Multifamily Alternative Calculation Method Reference Manual which includes updated 2025 Energy Code standard designs, 2025 Long-term System Cost factors, 2025 hourly source energy, and 2025 weather data. CBECC 2025.1.0 Release Candidate (RC) provides a preview of the final 2025.1.0 compliance software, is for review and testing only, and is not usable for compliance. For details on what’s included in this version please see the Release Notes – PDF. | California Energy Commission Building Standards Office 715 P Street, MS 37 Sacramento, CA 95814 ATTN: RJ Wichert 916-897-3450 cbecc@energy.ca.gov | See the CBECC Website for:
Support: cbecc@energy.ca.gov |
Help With the Energy Code
For assistance with understanding or locating information in the Energy Code, contact the Energy Standards Hotline at: 800-772-3300 (toll-free in California); 916-654-5106 (outside California); or via email at title24@energy.ca.gov.