California SB 283.
What developers need to know about the new BESS fire authority consultation requirement.
Senate Bill 283 took effect January 1, 2026. For locally permitted battery energy storage projects at or above 10 megawatt-hours whose permit application is submitted on or after that date, a fire authority consultation is a statutory prerequisite to the application itself. The trigger is the application submission date. Projects whose applications were filed before January 1, 2026 fall outside the statute. This page explains what the law requires, who it applies to, and what a compliant process looks like end-to-end.
What SB 283 requires.
SB 283 establishes a mandatory consultation between the BESS project applicant and the local fire authority before the permit application is submitted to the Authority Having Jurisdiction. The consultation must address the fire safety elements of the proposed installation, including site layout, energy storage technology, fire detection and suppression approach, emergency response planning, and any alternative means of compliance the applicant intends to pursue.
The application must include the applicant's certification that the consultation occurred. The consultation summary and the fire authority's input carry into the permit submittal package, where they establish the basis for that certification and frame the AHJ's review. For projects on the local permitting track, the consultation must occur at least 30 days before the application is submitted.
The statute specifies what the documentation must contain: the date, the names and titles of participants, a summary of fire safety matters discussed, and a description of how the application addresses those matters.
The inspection requirement.
Local approval is prohibited unless the fire authority inspects the system after installation is complete and before operations begin, at the applicant's cost. On the Energy Commission track, the same inspection is required, except that if it has not occurred within 90 days of the applicant's notice of completion, the Commission may certify the system without it.
Who it applies to.
The requirement applies to stationary battery energy storage systems capable of storing 10 MWh or more where the permit application is submitted to a local jurisdiction. A parallel requirement applies to projects certified through the Energy Commission's opt-in process, which reaches systems at 200 MWh or greater. Smaller systems are not subject to the consultation requirement, though they remain subject to the full fire and building code compliance obligations under NFPA 855 and local amendments.
California enforces the 2023 edition of NFPA 855 through the 2025 California Fire Code, Part 9 of Title 24. The 2026 edition is published but has not been adopted in California. HGS tracks the adoption process.
This page summarizes the chaptered text of SB 283, Chapter 407, Statutes of 2025. It is informational and is not legal or engineering advice.
Timeline implications: why late is expensive.
Scheduling a substantive consultation meeting takes weeks, and fire authorities in California's largest jurisdictions are under volume pressure. The 30-day statutory minimum runs from the consultation to the application, so a consultation treated as a late checkbox moves the filing date, not the consultation date.
A well-prepared SB 283 pre-application package supports a focused meeting and a permit submittal the AHJ can review against a documented record. That package covers the project narrative, preliminary site plan, BESS specifications, proposed installation standard, and a first-draft fire suppression approach.
The local track carries no statutory scheduling window. The Energy Commission track gives applicants a 30-day response deadline and a 60-day outer limit on the meeting date; Public Utilities Code section 8501 gives local applicants neither. The fire authority responds on its own schedule.
Where the HMA fits.
The consultation meeting surfaces concerns. The Hazard Mitigation Analysis under NFPA 855 is where those concerns are analytically addressed. The meeting is the input. The HMA is where those concerns are answered. The HMA should answer every fire safety concern the fire authority raised, in writing, with the applicable NFPA 855 methodology cited. For any deficiency identified, it should document the remediation pathway: prescriptive compliance, empirical UL 9540A data, or a performance-based alternative.
Where the installation cannot meet prescriptive separation distances, NFPA 855 provides three remediation pathways: a passive fire barrier meeting the standard's prescriptive requirements, demonstration via UL 9540A large-scale fire test data that propagation will be contained, or site redesign to meet prescriptive distances. HGS documents the options. The developer, with the engineer of record, selects the pathway.
How HGS supports SB 283 compliance.
For BESS developers, we review the SB 283 pre-application package against the applicable code pathway, attend the meeting in a technical advisory capacity, document the consultation, produce a documented record of fire authority input and where it applies in the permit submittal, and independently review the HMA against NFPA 855.
Our scope is consulting. We document findings, present options, and coordinate between parties. We do not serve as engineer of record and we do not sign design drawings. That boundary protects all parties and keeps the compliance work separated from the licensure scope.
Have a project approaching the SB 283 threshold?
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