Cal. Pub. Util. Code § 9501

Each publicly owned electric and gas utility shall develop and implement its low-income home weatherization program, in consultation with gas and electrical corporations and the Department of Economic Opportunity, to avoid duplication and to ensure the most efficient use of public and private resources. For ratemaking purposes, gas and electrical corporation expenditures for consultation and coordination shall be recoverable from ratepayers, subject to the Public Utilities Commission’s authority to determine the reasonableness of the amount of the expenditures.