CESA, in close collaboration with other energy stakeholders, has filed three important proposals for energy storage in the CPUC’s Resource Adequacy proceeding.
CESA recently filed three RA proposals that will improve the value of storage to California's grid and reduce costs for ratepayers.
1. Energy-only resources for storage charging (joint proposal with CESA, Large-scale Solar Association (LSA), the Solar Energy Industries Association (SEIA), and the California Wind Energy Association (CalWEA))
This proposal allows energy-only solar and wind resources (those that lack full deliverability during peak hours) to contribute to charging energy storage facilities within the same transmission planning area. It unlocks the value of clean generation, supports stand-alone storage, and avoids overbuilding fully deliverable renewables at higher cost.
2. Long-Duration Energy Storage (LDES) charging sufficiency (joint proposal with CESA, Fourth Power, Form Energy, and Hydrostor)
This proposal establishes a clear, workable framework for incorporating LDES resources in slice-of-day RA showings. It accounts for charging energy in a way that matches real-world operations, protects reliability, and avoids unnecessary costs to ratepayers.
3. Unforced Capacity (UCAP) methodology proposal (CESA)
Finally, CESA’s UCAP proposal tackles some of the hardest issues related to derating thermal and energy storage resources to reflect real-world conditions: jurisdictional clarity, equitable treatment across resource types, and a transparent, durable methodology that supports reliability without unintended consequences.
If you work in the CA energy space now is the moment to engage.
📄 Review the proposals
💬 Participate in the proceeding (R.25-10-003)
⚡ Help shape the future of RA in California