Battery storage rules: Orange County, CA

Last checked against primary sources: October 23, 2026

Orange County resolved its 2025 moratorium into a permanent BESS ordinance (No. 25-017, adopted Nov 4 2025, effective Dec 4 2025 — zoning amendment CA 24-03): BESS prohibited outright on Very High Fire Hazard Severity Zone parcels, and ≥100 ft from community buildings and residential uses unless a modification is justified.

Orange County: no battery storage in Very High Fire Hazard zones, and 100 ft from homes

A permanent county ordinance (No. 25-017, effective Dec 4 2025) bars battery storage facilities from parcels in a Very High Fire Hazard Severity Zone and sets them at least 100 ft from homes and community buildings, measured from the property line, unless the applicant justifies a modification. It replaced the county's 2025 moratorium, which has ended. OC Ordinance No. 25-017, Secs. 7-9-122.5 and 7-9-122.6 (adopted Nov 4 2025)

Fire and building codes in force

2025 California Fire Code (CFC), Title 24 Part 9, effective Jan 1 2026; adopts NFPA 855 (2023)
OSFM triennial code cycle; 180-day local-adoption window
CPUC GO 167-C (Res. ESRB-13, Mar 13 2025)

How a project is permitted

Dual track: (1) local Lead Permitting Agency (LPA) by default — 550+ agencies, 58 counties — or (2) the CEC AB 205 Opt-In, a state certificate issued in lieu of local permits that supersedes local setbacks and ordinances (>50 MW / ≥200 MWh).

Setbacks and spacing

BESS facilities shall not be located on a parcel in a very high fire hazard severity zone (Sec. 7-9-122.5). Fire / building code OC Ordinance No. 25-017, Sec. 7-9-122.5 (effective Dec 4 2025)
100 ft from community buildings and residential uses, measured from the property line, unless the applicant demonstrates a valid consideration justifying a modification (Sec. 7-9-122.6(b)(1)). Fire / building code OC Ordinance No. 25-017, Sec. 7-9-122.6 (effective Dec 4 2025)

Check a specific system

For a proposal or a system you're evaluating, answer a few questions in BESScheck: you get the rules that apply here, a checklist of what to ask, and the sources behind each line.