Cal. Pub. Util. Code § 900
The commission shall determine the most efficient and cost-effective way to provide programs pursuant to Sections 739.1, 739.2, and 2790 in a consistent manner statewide by utility provider service territory. In determining the most cost-effective way to provide service that benefits persons eligible for low-income programs, the commission shall consider factors, including, but not limited to, outreach efforts to reach the targeted population and the types of discounts and services that should be provided by each utility. On or before July 1, 2001, the commission shall develop and implement efficient and cost-effective programs pursuant to Sections 739.1, 739.2, and 2790. The commission may conduct compliance audits to ensure compliance with any commission order or resolution relating to the implementation of programs pursuant to Sections 739.1, 739.2, and 2790, and may conduct financial audits.
Ca. Pub. Util. Code § 900