If you’re looking up “California SB 52 opt-in certification requirements,” start with a correction: the opt-in certification program for large clean energy projects was not created by SB 52. It was created by Assembly Bill 205 in 2022, which added Chapter 6.2 to Division 15 of the Public Resources Code and gave the California Energy Commission authority to issue a consolidated certification. SB 52, signed in 2021, is a different law that defines planned power shutoffs as a type of local emergency.1California Legislative Information. California SB-52 State of Emergency Local Emergency Planned Power Outage The two bills moved through overlapping sessions, which is probably why the labels get mixed up online. Everything below describes the AB 205 opt-in program, which is what people usually mean when they search for this topic.
Which Projects Can Opt In
Public Resources Code Section 25545 limits the program to four categories of facilities:2California Legislative Information. California Code PRC 25545 – Certification of Nonfossil-Fueled Powerplants, Energy Storage Facilities, and Related Facilities
- Solar photovoltaic or terrestrial wind plants with a generating capacity of 50 megawatts or more.
- Battery or other energy storage systems capable of storing 200 megawatt-hours or more.
- Thermal power plants of 50 megawatts or more that do not burn fossil or nuclear fuels.
- Facilities that manufacture components for renewable energy or storage systems, if the CEC determines the project meets specific criteria.
A 200 megawatt-hour storage system rated at 50 megawatts can discharge at full output for about four hours, which matches the scale of grid-firming battery projects the program is aimed at. Smaller projects stay in traditional local permitting.
What the Application Must Contain
The CEC’s regulations at 20 CCR Section 1877 set the required contents. The submission must include everything specified in the regulation’s Appendix B along with a detailed explanation of how the facility meets the size and type definitions in Section 25545. For any Appendix B category that does not apply, the developer must explain why.3New York Codes, Rules and Regulations. 20 California Code of Regulations 1877 – Contents of Opt-in Application
Workforce certifications under Public Resources Code Sections 25545.3.3 and 25545.3.5 are mandatory. These provisions cover project labor agreements and the “skilled and trained workforce” standard, which generally means workers in apprenticeable construction trades are either registered apprentices or journey-level workers who graduated from an approved apprenticeship program or have equivalent on-the-job hours. The CEC verifies these certifications during review.4California Energy Commission. Opt-In Certification Program
Siting disclosures matter too. The developer must identify whether the project is on a prohibited site under Public Resources Code Section 25527, on land designated by the California Coastal Commission, or on land under the San Francisco Bay Conservation and Development Commission’s jurisdiction. If the project needs incidental take authorization under Fish and Game Code Section 2081(b), the biological data required for that authorization has to be in the application. The same goes for a lake or streambed alteration permit under Fish and Game Code Section 1602.
Finally, the application must list every local, state, or federal permit the developer has filed or plans to file, describe discussions with those agencies, and present preliminary information showing a net positive economic benefit to the affected local government. The CEC shares that economic showing with the local jurisdiction for its review.
The Net Positive Economic Benefit Finding
The CEC cannot certify a project unless it finds the facility will deliver a net positive economic benefit to the local government that would otherwise have had permitting authority over the site.5California Legislative Information. California Code Public Resources Code 25545.9 – Certification of Nonfossil-Fueled Powerplants, Energy Storage Facilities, and Related Facilities The statute lists six categories that count toward that benefit: employment growth, housing development, infrastructure and environmental improvements, assistance to public schools, assistance to public safety agencies, and property and sales tax revenues.
The law creates a rebuttable presumption that the benefit exists, which shifts the burden onto anyone arguing otherwise. In practice, a developer’s preliminary showing will stand unless a local government or other party produces evidence strong enough to overcome the presumption. This is where community opposition tends to concentrate, and it is the clearest point of leverage a local jurisdiction has in the process.
The 270-Day Review Clock
Once the CEC deems an application complete, a 270-day clock starts for the commission to finish environmental review and vote on the project at a public business meeting.4California Energy Commission. Opt-In Certification Program Key milestones published by the CEC include:6California Energy Commission. Opt-In Certification Program Overview – Pre-Filing Meeting
- Day 0: application deemed complete.
- Day 3: Notice of Preparation of the EIR filed and circulated.
- Day 5: tribal consultation invitations sent.
- Day 30: public scoping meeting held near the project site.
- Day 150: draft EIR circulated for public comment.
- Day 210: public comment period closes.
- Day 240: final EIR and executive director’s recommendation filed.
- Day 270: commissioners vote at a public business meeting.
- Day 360: partner agencies with retained permit authority issue their final decisions.
The 270-day window can slip if the draft EIR reveals new significant effects that require recirculation for additional comment. Complex projects involving sensitive habitat or water resources trigger that scenario fairly often. Even with slippage, the statutory timeline is faster than conventional local permitting for projects of this scale.
CEQA Review and Tribal Consultation
The CEC acts as the lead agency under the California Environmental Quality Act for every opt-in facility and must prepare a full Environmental Impact Report within the 270-day window. For each significant effect the EIR identifies, the commission must either find the project has been redesigned to avoid or substantially lessen the impact, or find that mitigation measures and alternatives are infeasible. When a significant unavoidable impact remains, the CEC must adopt a statement of overriding considerations explaining why the project’s benefits justify proceeding.
Tribal consultation has its own clock. Within five days of a complete application, the CEC must send consultation letters to California Native American tribes culturally and traditionally associated with the project area. The commission must solicit tribal ecological knowledge, incorporate it where feasible into the EIR, and take all feasible measures to avoid or minimize adverse effects to tribal cultural resources. The requirement is not waivable, and projects on or near culturally significant land have met real opposition at this stage.
What the Certificate Replaces, and What It Does Not
A granted certification is issued “in lieu of any permit, certificate, or similar document required by any state, local, or regional agency” and supersedes applicable ordinances and regulations.7California Legislative Information. Public Resources Code Chapter 6.2 – Certification of Nonfossil-Fueled Powerplants, Energy Storage Facilities, and Related Facilities That is sweeping language, but several agencies keep independent permitting authority and must act on their own permits within 90 days after the EIR is certified:
- California Coastal Commission
- San Francisco Bay Conservation and Development Commission
- State Water Resources Control Board and regional water quality control boards
- Local air quality management districts
- Department of Toxic Substances Control
The 90-day deadline for those agencies only applies if the developer has already filed a complete application with each of them before the EIR is certified. Missing that sequencing is one of the easiest ways to blow past the Day 360 partner-agency deadline, so engaging these agencies during pre-application work is worth more than it looks.
Federal grid interconnection stays outside this program entirely. A CEC certificate does not get a project a connection to the transmission system, and the queue process at the Federal Energy Regulatory Commission runs on its own timeline that often exceeds 270 days. Treat it as a parallel workstream, not something to start after certification.
Challenging a Certification
Any lawsuit to overturn a CEC certification or its EIR must be resolved within 270 days of the certified administrative record being filed with the court, to the extent feasible.8California Legislative Information. California Code Public Resources Code 25545.13 – Certification of Nonfossil-Fueled Powerplants, Energy Storage Facilities, and Related Facilities Starting January 1, 2026, the CEC must prepare the record concurrently with its project review and certify it within five days of its decision. The Judicial Council has adopted rules of court to implement the expedited schedule, which applies through any appeal.
The “to the extent feasible” language means courts are not strictly bound by the 270-day target, but the direction from the Legislature is clear: CEQA challenges to these projects are supposed to move quickly. For opponents, that puts the real pressure on the CEC proceeding itself, where expert testimony and community input have to be assembled before certification rather than after. For developers, it means a certification carries more durability than a typical local land-use approval, which can stay in open-ended litigation for years.