State Electricity Resource Standards 

Berkeley Lab tracks and analyzes state electricity resource standards, covering both renewables portfolio standards (RPS) as well as broader clean electricity standards (CES) that include nuclear energy and fossil generation with carbon capture and sequestration. A central element to this work is an annual data update consisting of the following set of data files:

RPS & CES Targets and Demand (XLSX) (last updated June 2026)
Includes annual, state-level data on nominal RPS and CES percentage targets and estimated RPS and CES demand based on current state laws. Also includes the underlying retail electricity sales and the portion of retail sales subject to RPS or CES requirements, as used to estimate RPS and CES demand. Further details on data sources and methods are described within the data file notes.

Historical RPS & CES Capacity Additions (XLSX) (last updated June 2026)
Includes annual electric generation capacity additions associated with state RPS or CES programs, through the end of the prior calendar year and disaggregated by technology type, off-taker type, and region. The criteria for categorizing generation capacity additions as RPS or CES-related are described within the data file notes.

Historical RPS & CES Target Achievement and Compliance Costs (XLSX) (last updated June 2026)
Includes historical annual data on achievement of each state’s RPS and CES targets and estimated compliance costs, based on compliance reports filed by load serving entities and state public utility commissions. Achievement levels and compliance costs are defined within data file notes.

These data files are accompanied by a set of summary slides containing figures and descriptions of the updated data. In addition to these annual data updates, Berkeley Lab has previously conducted topical analyses on state electricity resource standards, including past work evaluating the costs and benefits of state RPS policies.

Note: As a federally funded national laboratory, Berkeley Lab and the authors make no claim on the merits of state RPS and CES policies. However, because these policies impact the electricity sector, Berkeley Lab provides basic factual information through its annual data products.