Fuel Mix Disclosure

August 10, 2023


California's retail electricity suppliers must disclose to all customers and the state the fuel mix and greenhouse gas (GHG) emissions intensity used in the generation of electricity. Utilities must use a standard label created by the California Energy Commission (CEC), and this information must be provided to end-use customers annually. Utilities must also disclose this information in all product-specific written marketing materials distributed to consumers.

Program Overview

Implementing Sector: State
Category: Regulatory Policy
State: California
Incentive Type: Generation Disclosure
Web Site: https://www.energy.ca.gov/programs-and-topics/programs/power-source-disclosure/power-content-label
Start Date:
Eligible Renewable/Other Technologies:
  • Other EE
Fuel Mix: Must be disclosed
Emissions: Must be disclosed
Distribution and Frequency: Distributed to customers annually, and in all written marketing materials distributed to consumers
Standard Format Required: Yes


Name: 20 CCR 1390, et seq.
Name: CA Public Utilities Code § 398.1 et seq.


Name: Power Source Disclosure Program
Organization: California Energy Commission
Phone: (916) 653-0237
Email: PSDprogram@energy.ca.gov

This information is sourced from DSIRE; the most comprehensive source of information on incentives and policies that support renewables and energy efficiency in the United States. Established in 1995, DSIRE is operated by the N.C. Clean Energy Technology Center at N.C. State University.