California Public Utilities Commission (CPUC)
Comments Due September 10, 2026
In the California Public Utilities Commission’s ongoing Building Decarbonization Rulemaking (R.19-01-011), the Commission adopted a decision in 2023 (D.23-12-037) that eliminated electric line extension allowances, the 10-year refundable payment option, and the 50% discount option under Electric Tariff Rules 15 and 16 for mixed-fuel new construction, effective July 1, 2024. The Commission defined mixed-fuel new construction as building projects that use gas and/or propane in addition to electricity. The Commission also required mixed-fuel new construction projects to pay final actual electric line extension costs, rather than only estimated costs, effective January 1, 2025.
On June 9, 2026, the Morongo Band of Mission Indians submitted a letter to the Commission raising issues about the potential impacts of D.23-12-037 on Tribal communities located on Tribal trust lands. The Commission sent an Amended Scoping Memo and Ruling to Tribal leaders and staff on July 30, 2026. To more fully assess the application of certain parts of D.23-12-037, the Commission is accepting comments from the parties, potentially impacted Tribes, and the public.
The Commission will accept written comments from Tribal governments that are not formal parties to the proceeding and will docket these comments in the proceeding through a ruling issued by the assigned Administrative Law Judge. Email written comments to the Office of the Tribal Advisor at TribalAdvisor@cpuc.ca.gov by September 10, 2026.
If a Tribal government would like to become a party to this proceeding, please follow the directions at the link below or send an email to both the assigned Administrative Law Judge and the Tribal Advisor at TribalAdvisor@cpuc.ca.gov to request party status. If you would like to be added to the proceeding service list for informational purposes, please go to the link below and follow the directions or send an email to the assigned Administrative Law Judge and Tribal Advisor at TribalAdvisor@cpuc.ca.gov.
How to Become a Party in a Proceeding
How to Be Added to Proceeding Service List
CPUC Office of the Tribal Advisor
If you need additional information or have any questions regarding this matter, please reach out to Thomas Gates or Maria Kelly at TribalAdvisor@cpuc.ca.gov.
The full text of Rulemaking Regarding Building Decarbonization (R.19-01-011) was made available here on July 23, 2026.