California local moratoria

Every local infrastructure moratorium in the inventory for California, current through September 23, 2026.

33 instruments — 22 in force, 2 pending, 9 past.

State policy is tracked separately: 13 actions (13 bills) in state_legislation.csv. These are not included in the local count above.

Detailed entries

Arcata

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-09-16 (City Council, 5-0), Ordinance No. 1594
• Normalized date: 2026-09-16 (exact)
• Duration: 45-day interim urgency ordinance; extendable 10 months 15 days, then up to 12 more months
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-arcata-2026
• Legal basis: Ordinance No. 1594 (Govt. Code 65858) moratorium on new data center land use applications
• What prompted it: No zoning definition for data centers; concern over scarce industrial land/resources; recent reports of a proposed 30,000-50,000 sq ft facility locally; existing small EdgeConneX colocation facility unaffected.
• Affected projects: Existing 10,000 sq ft EdgeConneX colocation facility (fiber terminal) is legally permitted/operating and unaffected.
• Detailed status: Active as of 2026-09-23. Adopted 5-0 on 2026-09-16, effective immediately for 45 days; staff to report back by Oct. 21 (day 35).
• Outcome: Staff evaluating land-use definitions, environmental impacts, infrastructure capacity, and regulatory models.

Baldwin Park

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-03-04, Baldwin Park City Council adoption of an urgency ordinance establishing a 45-day moratorium; extended following a 2026-04-15 public hearing
• Normalized date: 2026-03-04 (exact)
• Duration: Initial 45 days from 2026-03-04; on 2026-04-15 the City Council held a public hearing and extended the urgency ordinance for an additional 10 months and 15 days under Gov. Code section 65858 -- the standard first extension under that statute -- bringing the pause to one year from original adoption (through approximately 2027-03-04).
• Current end date: 2027-03-04
• Sectors: data center
• Moratorium ID: ca-baldwin-park-2026
• Legal basis: Urgency ordinance adopted under California Gov. Code section 65858, extended via public hearing on 2026-04-15 (exact extension ordinance number not located in this pass)
• What prompted it: Regional San Gabriel Valley wave of data center moratoria/bans (Monterey Park, El Monte, Montebello); city seeking time to study impacts and develop zoning standards for data center uses before any application is filed.
• Affected projects: None identified.
• Detailed status: Extended, active as of 2026-09-23. The original 45-day urgency moratorium (adopted 2026-03-04) was extended on 2026-04-15 for 10 months and 15 days under Gov. Code section 65858, bringing the pause through approximately 2027-03-04. Confirmed by a City of Coachella staff report citing the Baldwin Park action as regional precedent and by a citizenportal.ai report that the Council 'approved an urgency ordinance (one-reading) extending a moratorium on approval, establishment or operation of data centers' unanimously (3-0). No adoption of permanent zoning regulations, rescission, or further extension beyond the one-year mark was found in this pass; the exact extension-ordinance number was not located.
• Outcome: 45-day moratorium adopted and extended to approximately one year while the city develops data-center zoning standards.

Calaveras County

• Type: County
• Status: 🟢 Active
• Date enacted: 2026-08-25 (Board of Supervisors adopted 4-0, chair absent; signed/issued 2026-08-28)
• Normalized date: 2026-08-25 (exact)
• Duration: 45-day urgency ordinance; extendable up to two years total under Gov. Code 65858
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-calaveras-county-2026
• Legal basis: Urgency ordinance (Govt. Code 65858), countywide moratorium on data centers
• What prompted it: Planning Director said large-scale data centers warrant further study on water, electricity, noise, lighting impacts; no application on file.
• Affected projects: No pending application; proactive measure.
• Detailed status: Active as of 2026-09-23. Adopted 4-0 (Chair Stopper absent) on 2026-08-25; runs 45 days to 2026-10-09, extendable up to two years while county studies impacts.
• Outcome: County staff to study data center impacts and return with recommendations, possibly a permanent ban.

City of Angels (Calaveras County)

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-08-18 (City Council, 5-0), Ordinance 559
• Normalized date: 2026-08-18 (exact)
• Duration: 45-day urgency ordinance; extension to 10 months 15 days proposed at 2026-09-15 hearing
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-city-of-angels-calaveras-county-2026
• Legal basis: Ordinance 559 (Govt. Code 65858), moratorium on data center land use entitlements
• What prompted it: No regulatory framework for data centers in city zoning code; text substantially adapted from the City of Coachella's ordinance.
• Affected projects: None named.
• Detailed status: Active as of 2026-09-23. Adopted 5-0 on 2026-08-18, 45 days, set to expire 2026-10-02. A staff report for the 2026-09-15 Council meeting recommended adopting Ordinance 560 to extend the moratorium through 2027-08-17 (10 months 15 days); whether that extension was actually adopted was not confirmed in this pass.
• Outcome: —

Coachella

• Type: City
• Status: ⚪ Replaced
• Date enacted: 2026-06-04 (Coachella City Council special meeting approved an interim urgency moratorium on data centers, per NBC Palm Springs and kvcrnews.org reporting); extended on or about 2026-07-09 while the city drafts a permanent ban
• Normalized date: 2026-06-04 (exact)
• Duration: Consistent with the Gov. Code section 65858 interim urgency ordinance pattern already documented elsewhere in this inventory (initial up to 45 days, extendable to a 2-year maximum by 4/5 vote): reported as an initial temporary/urgency moratorium adopted 2026-06-04, then extended around 2026-07-09 ('Coachella Extends Temporary Ban On Data Center Developments,' Patch) as the council moves toward a permanent ban. Exact day counts and vote margins were not confirmed in the sources reviewed.
• Current end date: 2026-09-25
• Sectors: data center
• Moratorium ID: ca-coachella-2026
• Legal basis: Interim Urgency Ordinance No. 1229 (adopted 2026-06-04, 45-day pause); extended by Urgency Ordinance No. 1230 (adopted 2026-07-08/09, 10 months 15 days); superseded by Ordinance No. 1231, adding Chapter 17.92 to the Coachella Municipal Code to permanently prohibit data center uses citywide (first reading 2026-08-12, second reading/adoption 2026-08-26, effective 30 days after adoption).
• What prompted it: Public backlash and protests over a large proposed data center project and a power agreement with developer 'Stronghold'; council terminated the specific project and moved toward a permanent ban
• Affected projects: A large proposed data center project tied to a power agreement with 'Stronghold'; project reported terminated by the city (per NBC Palm Springs, 'Coachella City Council Halts Data Center Project, Cuts Ties with Stronghold,' 2026-06-05)
• Detailed status: Replaced as of 2026-09-23. The City Council adopted Ordinance No. 1231 on 2026-08-26 (second reading), permanently prohibiting data center uses citywide (with limited exceptions for accessory server/IT rooms); effective 2026-09-25, thirty days after adoption. Mayor Figueroa has also voiced support for a future ballot measure to entrench the ban, but no such measure had been placed on a ballot as of this pass.
• Outcome: Moratorium adopted (Ord. 1229) and extended 10 months 15 days (Ord. 1230); superseded by a permanent citywide prohibition on data centers (Ord. 1231), adopted 2026-08-26 and effective 2026-09-25. Coachella is the first Coachella Valley city and second California city (after Monterey Park) to permanently ban data centers.

Covina

• Type: City
• Status: ⚪ Replaced
• Date enacted: 2025-03 (approx.; Ordinance 25-01, 45 days), extended by Ordinance 25-04 (effective 2025-05-06, through 2026-05-06)
• Normalized date: 2025-03 (month_only)
• Duration: 45-day urgency ordinance extended 10 months 15 days; repealed early by permanent zoning ordinance
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-covina-2025
• Legal basis: Ordinance 25-01 (original), extended by Ordinance 25-04; repealed and replaced by Ordinance 25-10 (Zoning Code Amendment ZCA 25-2), introduced 2025-09-02
• What prompted it: Inquiries about siting BESS in the industrial area; city zoning code had no BESS land-use category.
• Affected projects: 522, 534 & 680 Edna Place BESS project under Planning Commission review by June 2026.
• Detailed status: Replaced. The moratorium (Ordinance 25-01, extended by 25-04 through May 2026) was repealed ahead of schedule when the Council introduced Ordinance 25-10 on 2025-09-02, adding a BESS definition and making BESS a conditionally permitted use in the M-1 Light Manufacturing zone and repealing Ordinance 25-04; the Planning Commission had recommended this 5-0-0 on 2025-08-12. Effective date of the permanent ordinance not independently confirmed in this pass, but the city was actively processing a BESS project application (522/534/680 Edna Place) by mid-2026, confirming the moratorium had ended. [VERIFY details not confirmed at confidence 0.55 in the 2026-09 refresh]
• Outcome: Permanent BESS zoning regulations (M-1 conditional use) in effect.

Desert Hot Springs

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-06-16 (City Council adoption of a 45-day interim urgency moratorium); extended by 22 months and 15 days via unanimous City Council vote on 2026-07-07
• Normalized date: 2026-06-16 (exact)
• Duration: Initial 45 days from 2026-06-16; extended 22 months and 15 days from 2026-07-07, bringing the maximum total pause to the Gov. Code section 65858 two-year cap.
• Current end date: 2028-05-22
• Sectors: data center
• Moratorium ID: ca-desert-hot-springs-2026
• Legal basis: Interim urgency moratorium ordinance, adopted and extended under California Gov. Code section 65858
• What prompted it: Pause on licenses, permits, entitlements, and land-use approvals for data centers and similar high-intensity computing uses while the city studies whether, where, and under what standards such uses should be allowed; no specific data center application was reported pending
• Affected projects: —
• Detailed status: Active as of 2026-09-23; extended on 2026-07-07 (Council vote) to run 22 months and 15 days from that date, or approximately 2028-05-22, the full Gov. Code section 65858 two-year statutory ceiling from the original 2026-06-16 adoption. No permanent zoning ordinance or further extension/rescission was found in sources reviewed through 2026-09-23; Greater Palm Springs Business Insider (Sept. 2026) confirms the moratorium remains in force ('Desert Hot Springs has extended its moratorium for as long as two years').
• Outcome: —

El Monte

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-03-18 (Interim Urgency Ordinance No. 3063, adopted by a 7-0 vote at a Concurrent Special Meeting, per published City Council minutes); extended by Interim Urgency Ordinance No. 3065, adopted by a 7-0 vote at the Regular Meeting of 2026-04-22 following a public hearing and receipt of the Gov. Code section 65858(d) report, per published minutes
• Normalized date: 2026-03-18 (exact)
• Duration: Initial 45 days (Ord. 3063, term would have run through approximately 2026-05-02); extended 10 months and 15 days by Ord. 3065, adopted 2026-04-22. Under Gov. Code section 65858(a), the initial ordinance plus this first extension together cannot exceed one year from initial adoption, placing the current expiration at approximately 2027-04-13/14 (45 days + 10 months 15 days = 12 months from 2026-03-18). The exact date is not stated verbatim in the minutes reviewed and is calculated from the statutory ceiling, not quoted from a source.
• Current end date: 2027-03-17
• Sectors: data center
• Moratorium ID: ca-el-monte-2026
• Legal basis: Interim Urgency Ordinance No. 3063; extension Interim Urgency Ordinance No. 3065; Gov. Code section 65858
• What prompted it: City Council study of data center development and community impacts within El Monte
• Affected projects: No specific project identified in captured records
• Detailed status: Active as of 2026-09-23. A Sept. 17-18, 2026 CNS/ABC7 report on the new LA County unincorporated-area data center prohibition describes El Monte (along with Baldwin Park) as having 'voted to implement a yearlong ban on data centers proposed within their city limits' in late April 2026, consistent with this row's Ord. 3063/3065 term reaching the Gov. Code 65858(a) one-year ceiling. No rescission, expiration, or permanent-ordinance replacement was found in sources reviewed through 2026-09-23.
• Outcome: Extension ordinance proposed to maintain the pause while the city studies permanent controls

Escondido

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-08-26 (City Council unanimous, 5-0)
• Normalized date: 2026-08-26 (exact)
• Duration: 45-day urgency ordinance; extendable 10 months 15 days, then up to one more year
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-escondido-2026
• Legal basis: Urgency ordinance (Govt. Code 65858) prohibiting new data centers and expansions
• What prompted it: Proactive measure; no pending applications. Impacts cited: water, electricity/grid, land footprint, noise, tax/job tradeoffs.
• Affected projects: None; no active or pending data center applications at adoption.
• Detailed status: Active as of 2026-09-23. Adopted 5-0 on 2026-08-26; staff expected to report back by Oct. 10 with findings; can be extended 10 months 15 days, then up to one more year.
• Outcome: Staff researching permanent regulatory options.

Eureka

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-09-01 (Bill No. 1061-C.S.)
• Normalized date: 2026-09-01 (exact)
• Duration: 45-day interim ordinance; extendable 10 months 15 days, then up to one more year (max 2 years)
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-eureka-2026
• Legal basis: Bill No. 1061-C.S. (interim ordinance, Govt. Code 65858), covers inland and coastal zones
• What prompted it: No projects proposed; grid/electricity, water, noise, carbon footprint, coastal water-quality effects studied.
• Affected projects: None proposed at adoption.
• Detailed status: Active as of 2026-09-23. Adopted unanimously 2026-09-01, effective immediately for 45 days to 2026-10-16; extendable.
• Outcome: Staff and Planning Commission to study zoning/regulatory controls.

Gilroy

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-09-14 (City Council unanimous)
• Normalized date: 2026-09-14 (exact)
• Duration: 45-day interim urgency ordinance; extendable in two phases up to two years total
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-gilroy-2026
• Legal basis: Interim urgency ordinance (Govt. Code 65858) prohibiting new data center applications/entitlements
• What prompted it: Received a pre-application from Amazon for a possible second facility (no formal application filed); existing Amazon data center under construction is not affected.
• Affected projects: Does not affect the already-approved Amazon (AWS) data center under construction in northeast Gilroy; covers any future application including a possible second AWS facility.
• Detailed status: Active as of 2026-09-23. Adopted unanimously 2026-09-14, effective immediately for 45 days; staff to report back before expiration.
• Outcome: City to develop objective zoning/siting/operational standards for data centers.

Humboldt County

• Type: County
• Status: 🟡 Pending
• Date enacted: —
• Normalized date: — (unverified)
• Duration: Proposed one-year moratorium; not yet adopted as of 2026-09-23
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-humboldt-county-undated
• Legal basis: —
• What prompted it: Board directed staff on 2026-07-15 to prepare a one-year data center moratorium ordinance, choosing a moratorium over a permanent ban partly because of an existing small data center (trans-Pacific cable landing point) in Arcata.
• Affected projects: —
• Detailed status: Pending as of 2026-09-23. Board of Supervisors directed staff on 2026-07-15 to draft a one-year moratorium; no adopted ordinance was found in this pass, more than two months later. [VERIFY instrument number; adoption date; primary source (news-only evidence) not confirmed at confidence 0.5 in the 2026-09 refresh]
• Outcome: —

Imperial

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-06-03 (City Council unanimous adoption of Interim Urgency Ordinance No. 834, per meeting summary and a contemporaneous Coachella staff report survey of nearby municipal actions)
• Normalized date: 2026-06-03 (exact)
• Duration: Initial 45 days from 2026-06-03 (Interim Urgency Ordinance No. 834). Contrary to the prior 'expired' classification, the City Council held a public hearing 2026-07-15 and unanimously (5-0) adopted Urgency Ordinance No. 835, extending Ordinance No. 834 for up to 10 months and 15 days under Gov. Code section 65858, so that -- as multiple sources independently confirm -- the City of Imperial's pause on data centers, high-performance computing facilities, and battery energy storage systems (BESS) runs through approximately May 2027. This remains a distinct instrument and jurisdiction from the Imperial County Board of Supervisors' moratorium (ca-imperial-county-2026, since rescinded by court order), which covers unincorporated county land, not the City of Imperial.
• Current end date: 2027-05-30
• Sectors: data center, battery storage
• Moratorium ID: ca-imperial-2026
• Legal basis: Interim Urgency Ordinance No. 834, adopted under California Gov. Code section 65858
• What prompted it: Pause on approvals for data centers, battery energy storage systems, and similar utility-intensive industrial/technology uses while the city studies zoning and development standards
• Affected projects: —
• Detailed status: Active/extended as of 2026-09-23 -- correcting the prior 'expired' classification. Following a July 15, 2026 public hearing, the City Council unanimously (5-0) adopted Urgency Ordinance No. 835, extending Interim Urgency Ordinance No. 834 by up to 10 months and 15 days (to approximately 2027-05-30/through May 2027), continuing the pause on data centers, high-performance computing facilities, and battery energy storage systems (BESS) citywide while staff finishes defining data-center categories, mapping feasible industrial sites, and evaluating environmental and labor impacts. KPBS ('the city of Imperial has also temporarily frozen all data center development through May 2027') and Hoodline both independently confirm this as of August 2026, and no further change was found through 2026-09-23. This is unrelated to, and unaffected by, the Imperial County Superior Court's September 2026 order setting aside the separate Imperial County Board of Supervisors moratorium (ca-imperial-county-2026), which governs unincorporated county land only.
• Outcome: —

Imperial County

• Type: County
• Status: 🔴 Rescinded
• Date enacted: 2026-06-17
• Normalized date: 2026-06-17 (exact)
• Duration: Extended to a one-year moratorium on 2026-07-14; reported to run into June 2027 while the County's advisory committee develops recommendations.
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-imperial-county-2026
• Legal basis: County Ordinance No. 1616 (adopted 2026-06-16, initial 45-day moratorium) and County Ordinance No. 1618 (adopted 2026-07-14, extension of ~10 months 15 days); both ordinances were set aside by court order effective 2026-09-11 (see current_status).
• What prompted it: Months of public opposition to a large proposed data center complex projected to consume about 750,000 gallons of water daily and more electricity than the entire county used in 2024
• Affected projects: A proposed large-scale data center complex; the developer (reported as Sebastian Rucci) indicated plans to challenge the decision in court.
• Detailed status: Rescinded by court order as of 2026-09-23. Imperial County Superior Court Judge Jeffrey B. Jones entered judgment 2026-09-04 in favor of developer Imperial Valley Computer Manufacturing, LLC, finding neither Ordinance 1616 (the original moratorium) nor Ordinance 1618 (its ~10-month-15-day extension) made the causal finding of a 'current and immediate threat to public health, safety, or welfare' required by Gov. Code section 65858. A peremptory writ of mandate issued 2026-09-11 directs the County and Board of Supervisors to set aside both ordinances and stop using them to withhold, suspend, or refuse data-center permits. The County has said (per KYMA, 2026-09-22) it is working on a new moratorium addressing the court's concerns; no replacement had been adopted as of 2026-09-23. The Data Center Advisory Committee, created alongside the moratorium, continues to meet (inaugural meeting 2026-09-17) and is unaffected by the ruling. Separately, a different judge (L. Brooks Anderholt) has ordered a full CEQA environmental review of the underlying data center project in a related case, so the project itself remains stalled notwithstanding the moratorium's invalidation.
• Outcome: Moratorium (Ordinances 1616 and 1618) adopted and extended to run through mid-2027, then invalidated by the Imperial County Superior Court (Judge Jeffrey B. Jones) in Imperial Valley Computer Manufacturing, LLC v. County of Imperial: judgment entered 2026-09-04, peremptory writ of mandate issued 2026-09-11 ordering the County to set aside and cease enforcing both ordinances because their findings did not satisfy Gov. Code section 65858's 'current and immediate threat' standard. The County has 30 days after service of the writ to file a return; county officials say they are preparing a new moratorium that addresses the court's findings. The Data Center Advisory Committee process continues separately.

Indio

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-06-03 (City Council unanimous adoption of Urgency Ordinance No. 1838); extended by a further City Council vote on 2026-07-15
• Normalized date: 2026-06-03 (exact)
• Duration: Initial 45 days from 2026-06-03 (Urgency Ordinance No. 1838); extended 90 days by unanimous City Council vote on 2026-07-15, keeping the pause in force through 2026-10-16 while staff drafts a permanent ban ordinance for Planning Commission and Council consideration.
• Current end date: 2026-10-16
• Sectors: data center
• Moratorium ID: ca-indio-2026
• Legal basis: Urgency Ordinance No. 1838, adopted under California Gov. Code section 65858
• What prompted it: Pause on establishment, expansion, or intensification of data center uses to allow review of regulations and consideration of a longer moratorium or permanent prohibition; city reported no active data center applications
• Affected projects: —
• Detailed status: Active as of 2026-09-23. The City Council voted unanimously on 2026-07-15 to extend the moratorium 90 days, through 2026-10-16, and directed staff to draft a permanent ban ordinance; staff's stated goal was a Planning Commission hearing in August and a Council vote in September, with a permanent ban taking effect in late October or early November 2026. As of the most recent secondary source reviewed (Desert Oasis Insider, September 2026), 'Indio's temporary moratorium currently runs through October 16,' with no adoption of the permanent ban yet confirmed in this pass; staff had indicated a further short extension would be sought if the permanent-ban schedule slipped.
• Outcome: —

Irwindale

• Type: City
• Status: ⚪ Replaced
• Date enacted: Draft Urgency Ordinance 819 was scheduled for a City Council public hearing and possible four-fifths adoption vote on 2026-05-27; whether it was adopted that day is unconfirmed
• Normalized date: — (unverified)
• Duration: Draft ordinance proposed a 45-day moratorium on processing, approving, or accepting new data center applications and on converting existing facilities into data centers
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-irwindale-undated
• Legal basis: Draft Urgency Ordinance 819 (proposed 45-day moratorium, scheduled for a 2026-05-27 hearing; disposition unconfirmed) was superseded by Ordinance No. 821, adding Chapter 17.42 to Title 17 (Zoning) of the Irwindale Municipal Code to permanently prohibit the establishment and operation of AI data centers citywide; first reading 2026-08-26, adopted 2026-09-09 (unanimous), effective 2026-10-09.
• What prompted it: Proposed pause on new and converted data center applications
• Affected projects: —
• Detailed status: Replaced as of 2026-09-23. Whether Draft Urgency Ordinance 819 (the proposed 45-day moratorium) was ever formally adopted at the 2026-05-27 hearing could not be confirmed in this pass either; no news coverage or minutes referencing Ordinance 819's disposition were located. What is confirmed is that the City subsequently directed staff and legal counsel to prepare a permanent prohibition: the City Council unanimously approved Ordinance No. 821, adding Chapter 17.42 (Artificial Intelligence (AI) Data Centers & Associated Uses) to the Irwindale Municipal Code, on first reading 2026-08-26 and second reading/final adoption 2026-09-09; the ordinance takes effect 2026-10-09. This permanent citywide prohibition resolves the pending question regardless of Ordinance 819's status. [VERIFY adoption of Ordinance 819 not confirmed in the 2026-09 QA pass; CivicClerk event has no minutes]
• Outcome: —

Lake Elsinore

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-08-25 (City Council unanimous)
• Normalized date: 2026-08-25 (exact)
• Duration: 45-day emergency ordinance; extendable up to two years total
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-lake-elsinore-2026
• Legal basis: Emergency ordinance (Govt. Code 65858) pausing new data center applications/entitlements
• What prompted it: Requested by Councilmember Steve Manos after resident concerns; city zoning code does not specifically address data centers.
• Affected projects: V22 Investments LLC's Elsinore Heights Industrial Project withdrew its optional data-center use component separately, around the same time; the overall project remains under review.
• Detailed status: Active as of 2026-09-23. Adopted unanimously 2026-08-25, effective immediately for 45 days.
• Outcome: City studying scale/impacts before determining regulatory approach.

Los Angeles County

• Type: County
• Status: 🟢 Active
• Date enacted: 2026-09-17, effective date of a memorandum signed by Amy Bodek, Director of the Department of Regional Planning, implementing Board of Supervisors direction from an April 14, 2026 motion by Supervisor Hilda Solis
• Normalized date: 2026-09-17 (exact)
• Duration: Interim administrative prohibition on processing/approving large-scale (hyperscale) AI data centers in unincorporated county zones, in effect until the Board of Supervisors adopts a permanent zoning ordinance. A motion to formally initiate that ordinance was scheduled for a Community Services Cluster Agenda Review on 2026-09-23, with a Board of Supervisors hearing expected around 2026-10-06.
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-los-angeles-county-2026
• Legal basis: Department of Regional Planning Director's memorandum (interim planning guidance), issued pursuant to and implementing the Board of Supervisors' unanimous April 14, 2026 motion (Solis) directing staff to study and recommend data-center zoning code amendments; a formal ordinance was in preparation as of this pass, not yet adopted by the Board.
• What prompted it: San Gabriel Valley community concerns over health, environmental, water, and electricity impacts of hyperscale AI data centers (following the Monterey Park/SDCF controversy and other regional moratoria); Board of Supervisors motion directing a zoning study; noise, air-quality, and utility-rate concerns cited by county Public Health and Public Works directors.
• Affected projects: No hyperscale data centers currently sited in unincorporated county areas as of the memo; about 74 data centers operate elsewhere within LA County (mostly in incorporated cities), unaffected by the county action.
• Detailed status: Active as of 2026-09-23. On Sept. 17, 2026, LA County's Department of Regional Planning director issued a memorandum imposing an immediate, interim prohibition on new hyperscale AI data center development in all zones of unincorporated county territory (about 1 million of the county's 10 million residents), pending Board of Supervisors adoption of a formal ordinance. A motion to formally initiate that ordinance was on the agenda for a Sept. 23, 2026 Community Services Cluster Agenda Review meeting, with Board consideration expected around Oct. 6, 2026. Smaller enterprise/accessory/sole-source data centers are not covered by the prohibition.
• Outcome: Interim administrative ban imposed via Regional Planning Director memorandum while the Board of Supervisors moves to adopt a permanent zoning ordinance banning hyperscale AI data centers in unincorporated areas.

Mendocino County

• Type: County
• Status: 🟢 Active
• Date enacted: 2026-09-01 (Board of Supervisors, 5-0)
• Normalized date: 2026-09-01 (exact)
• Duration: 45-day urgency ordinance; extendable
• Current end date: —
• Sectors: data center, cryptocurrency mining
• Moratorium ID: ca-mendocino-county-2026
• Legal basis: Urgency ordinance barring new data centers (hyperscale, colocation, cloud, AI training/inference, HPC, crypto mining) in the unincorporated county
• What prompted it: County code does not define or regulate data centers, so one could be approved via routine building permit; no applicant named.
• Affected projects: None named.
• Detailed status: Active as of 2026-09-23. Adopted 5-0 on 2026-09-01, effective immediately for 45 days to 2026-10-16.
• Outcome: —

Montebello

• Type: City
• Status: ⚪ Expired
• Date enacted: 2026-02-11
• Normalized date: 2026-02-11 (exact)
• Duration: 45 days; statutory extensions available
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-montebello-2026
• Legal basis: Urgency Ordinance No. 2491, "AN URGENCY ORDINANCE OF THE CITY COUNCIL OF THE CITY OF MONTEBELLO, CALIFORNIA, AMENDING TITLE 17 (ZONING) OF THE MONTEBELLO MUNICIPAL CODE TO ESTABLISH INTERIM ZONING CONTROLS FOR ARTIFICIAL INTELLIGENCE (AI) DATA CENTERS," adopted by 5-0 roll call vote, satisfying the four-fifths urgency requirement under Gov. Code 65858. The ordinance's own title does not include the word "Amended"; it was introduced and adopted at the same meeting.
• What prompted it: Regional data center proposals, including Monterey Park's 1977 Saturn Street site about one-half mile away, and concerns over electricity, water, backup generators, noise, infrastructure, land-use compatibility, and environmental impacts
• Affected projects: No Montebello project identified; regional concern tied to nearby Monterey Park proposal
• Detailed status: Expired on schedule around 2026-03-28 (45 days after the corrected February 11, 2026 adoption date). A review of every City Council agenda from 2026-02-25 through 2026-07-27 (the last scheduled meeting before this check) found only the mandatory Gov. Code 65858(d) 10-day report, filed on the 2026-02-25 agenda; no extension, replacement, or further data-center action appears on any later agenda. Montebello separately adopted an unrelated urgency ordinance (No. 2495, adopted 2026-06-24) imposing a moratorium on SB 79 transit-oriented-development applications, which does not affect data centers.
• Outcome: Staff directed to study impacts, coordinate with neighboring jurisdictions, and return with Title 17 zoning standards

Monterey Park

• Type: City
• Status: ⚪ Replaced
• Date enacted: 2026-01-21; extended 2026-03-04
• Normalized date: 2026-01-21 (exact)
• Duration: Initial 45 days; extended 10 months and 15 days; expires 2027-01-21 unless changed
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-monterey-park-2026
• Legal basis: Ordinance No. 2272; extension Ordinance No. 2274; Gov. Code sections 36937 and 65858
• What prompted it: 1977 Saturn Street data center proposal and broader concern over energy use, noise, air quality, aesthetics, property values, neighborhood quality of life, CEQA review, and whether permanent regulations or a citywide ban are needed
• Affected projects: 1977 Saturn Street proposal by HMC StratCap (SheppardMullin counsel); local CEQA/project records described about 49.9 MW maximum load, 36 MW critical load, 14 backup diesel generators, and roughly 218,400 to 247,480 sq ft in different documents. Per San Gabriel Valley Tribune (2026-04-01), HMC StratCap formally withdrew the Saturn Street application after community pushback; city officials confirmed on 2026-04-20 that HMC StratCap still owns the parcel and has not communicated future plans for the site.
• Detailed status: Active; permanent citywide data center prohibition in place. Measure NDC passed at the June 2, 2026 special election (10,388 Yes / 1,372 No, per the LA County Registrar-Recorder's certified canvass); results certified by the City Clerk on June 30, 2026 and declared by City Council Resolution No. 2026-R56 on July 1, 2026 (unanimous, 5-0). Companion Ordinance No. 2280 (General Plan amendment prohibiting all data centers citywide) was adopted by Council on July 2, 2026, effective on or about July 11, 2026 (10 days after election-result certification, per Elections Code section 9217).
• Outcome: Moratorium extended through 2027-01-21 (superseded in practice by permanent action); permanent citywide prohibition codified by ordinance on 2026-04-20; voters ratified the prohibition via Measure NDC on 2026-06-02 (10,388 Yes / 1,372 No), with results certified July 1, 2026 and companion Ordinance No. 2280 adopted July 2, 2026.

Morgan Hill

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-08-26 (City Council unanimous)
• Normalized date: 2026-08-26 (exact)
• Duration: 45-day interim urgency ordinance; extendable in two phases up to two years total
• Current end date: —
• Sectors: data center, battery storage
• Moratorium ID: ca-morgan-hill-2026
• Legal basis: Interim urgency ordinance (Govt. Code 65858) blocking new data center and grid-scale BESS applications
• What prompted it: No zoning standards specific to either use; concern over loopholes like Gilroy's staff-level AWS approval; industrial zones close to residential areas.
• Affected projects: None named.
• Detailed status: Active as of 2026-09-23. Adopted unanimously 2026-08-26, effective immediately for 45 days.
• Outcome: —

Morro Bay

• Type: City
• Status: 🟢 Extended
• Date enacted: 2025-01-28 (Urgency Ordinance No. 668); extended by Ordinance No. 670 on 2025-02-25 to 2027-01-28 (two years total)
• Normalized date: 2025-01-28 (exact)
• Duration: 45-day urgency ordinance extended to a total of two years
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-morro-bay-2025
• Legal basis: Urgency Ordinance No. 668, extended by Urgency Ordinance No. 670, prohibiting grid-scale BESS application acceptance/approval/operation within city limits
• What prompted it: Public safety concerns after Moss Landing battery fires; prior Vistra 600 MW BESS proposal on the former power plant site (application withdrawn 2025).
• Affected projects: Vistra Corp. 600 MW BESS proposal (application withdrawn/paused; Vistra pursuing state AB 205 Opt-In Certification instead).
• Detailed status: Active as of 2026-09-23; expires 2027-01-28. The City is now separately considering an outright permanent ban on grid-scale BESS to replace the temporary pause (Planning Commission recommended a ban to Council in September 2026; Council has not yet acted).
• Outcome: City considering permanent BESS regulations or outright ban.

Oakley

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-04-14
• Normalized date: 2026-04-14 (exact)
• Duration: 45 days from 2026-04-14, extended 10 months and 15 days by a second urgency ordinance adopted 2026-05-12 (5-0 vote); the combined term runs to the Gov. Code 65858(a) one-year statutory ceiling, approximately 2027-04-13/14.
• Current end date: 2027-04-14
• Sectors: data center
• Moratorium ID: ca-oakley-2026
• Legal basis: Urgency ordinance adopted by a 5-0 vote at the April 14, 2026 Oakley City Council meeting (item 6.1), per published minutes; extended by a second urgency ordinance adopted 5-0 on 2026-05-12 (item 5.2). Ordinance No. 5-26, adopted at the same April 14 meeting, is confirmed to be a different, unrelated ordinance (administrative citation-hearing procedures) — not the data center moratorium. The moratorium ordinance was introduced under a placeholder number and its final assigned ordinance number was not stated in the minutes obtained [VERIFY exact assigned ordinance number for the April 14, 2026 urgency ordinance and its May 12, 2026 extension]
• What prompted it: Bridgehead Industrial Project public testimony and removal of data centers from that project; Oakley Municipal Code did not define or regulate data center land uses
• Affected projects: Bridgehead Industrial Project removed data center as a permissible use before approval
• Detailed status: Active as of 2026-09-23. The May 12, 2026 extension (10 months 15 days, 5-0 vote) runs the moratorium through 2027-04-14, per City Attorney Derek Cole's public statements. A joint City Council/Planning Commission work session was held 2026-07-21 (confirmed via the city's own posted staff report) to gather input on whether/where data centers should be allowed; no formal action was taken at that session, and the Mayor and staff indicated a goal of introducing permanent zoning standards 'by the end of this year' (2026). No permanent ordinance had been adopted and no further extension or rescission was found in sources reviewed through 2026-09-23.
• Outcome: Staff and Planning Commission to study impacts, gather public input, and draft zoning regulations

Orange County

• Type: County
• Status: ⚪ Replaced
• Date enacted: 2025-01-28 (Board of Supervisors, unanimous)
• Normalized date: 2025-01-28 (exact)
• Duration: 45-day urgency ordinance, extended 10 months 15 days on 2025-03-11 (to 2026-01-26); replaced by permanent ordinance effective 2025-12-04
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-orange-county-2025
• Legal basis: Interim urgency ordinance (approved via Supplemental Item #S32A, 2025-01-28); extended via Supplemental Item #S33E (2025-03-11); replaced by Ordinance 25-017 (Zoning Code Amendment CA 24-03), adopted by Board 2025-11-04, effective 2025-12-04
• What prompted it: Board directed staff on 2024-10-08 to draft BESS development standards.
• Affected projects: —
• Detailed status: Replaced. The 45-day moratorium adopted 2025-01-28 was extended 10 months 15 days on 2025-03-11 (to expire 2026-01-26); the Board adopted permanent BESS development standards (Ordinance 25-017) on 2025-11-04, effective 2025-12-04, superseding the moratorium before its stated expiration.
• Outcome: Permanent BESS development guidelines and standards in effect for unincorporated Orange County as of 2025-12-04.

Palm Springs

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-08-26, Palm Springs City Council unanimous adoption of an urgency ordinance (item brought forward by Councilmember Grace Garner)
• Normalized date: 2026-08-26 (exact)
• Duration: 45 days from adoption, effective immediately as an urgency ordinance; council discussed the possibility of extending for up to two years, consistent with the Gov. Code section 65858 pattern used elsewhere in the Coachella Valley.
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-palm-springs-2026
• Legal basis: Urgency ordinance adopted under California Gov. Code section 65858
• What prompted it: Regional wave of Coachella Valley moratoria/bans (Coachella, Desert Hot Springs, Indio); city's zoning/municipal code does not currently define or regulate data center uses; concerns over water, electricity, infrastructure, and land impacts of large-scale facilities.
• Affected projects: None named; city officials stated no active data center application was pending.
• Detailed status: Active as of 2026-09-23. 45-day urgency moratorium on new large-scale data center applications, adopted 2026-08-26, in effect through approximately 2026-10-10 (KESQ) while the city's planning department incorporates data center definitions into an ongoing zoning code update; city planners indicated fall 2026 community outreach on the issue.
• Outcome: 45-day urgency moratorium adopted while the city updates its zoning code, which currently does not define data center uses.

Patterson

• Type: City
• Status: 🟢 Extended
• Date enacted: 2026-07-16, Patterson City Council adoption of an initial 45-day moratorium; extended by unanimous (4-0) vote on 2026-08-18
• Normalized date: 2026-07-16 (exact)
• Duration: Initial 45 days from 2026-07-16; extended by a 4-0 City Council vote on 2026-08-18 through 2027-07-15. State law caps the total moratorium period at two years.
• Current end date: 2027-07-15
• Sectors: data center
• Moratorium ID: ca-patterson-2026
• Legal basis: Temporary urgency moratorium ordinance on data center construction, adopted 2026-07-16 and extended by City Council vote 2026-08-18 (exact ordinance numbers not located in this pass)
• What prompted it: Study of potential effects of data center development on public utilities (water, energy infrastructure), air quality, and noise levels in nearby communities; city in early stages of determining how to regulate data centers long-term.
• Affected projects: None named in sources reviewed.
• Detailed status: Active as of 2026-09-23. Initial 45-day moratorium on data center construction adopted 2026-07-16; extended unanimously (4-0) on 2026-08-18 through 2027-07-15 while the city studies utility, air-quality, and noise impacts before considering permanent regulations. City attorney described the city as being in 'the very early stages' of determining a regulatory approach.
• Outcome: 45-day moratorium adopted and extended through July 2027 while the city studies data center impacts and considers permanent regulations.

Richmond

• Type: City
• Status: 🟢 Active
• Date enacted: 2026-09-15, Richmond City Council adoption of an urgency ordinance (regular meeting)
• Normalized date: 2026-09-15 (exact)
• Duration: 45 days from the date of adoption, effective immediately as an urgency ordinance (four-fifths vote), extendable under Gov. Code section 65858.
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-richmond-2026
• Legal basis: Urgency Ordinance of the City Council of the City of Richmond, California, Establishing a 45-Day Temporary Moratorium on the Establishment of New Data Centers, adopted pursuant to Gov. Code sections 36937 and 65858
• What prompted it: City's municipal code does not specifically define or regulate data centers; council directed staff in April 2026 to return with a proposed moratorium; concerns over electricity/water use, noise, air quality, and the city's limited industrial land.
• Affected projects: None; city reported no pending data center applications.
• Detailed status: Active as of 2026-09-23. 45-day urgency moratorium adopted 2026-09-15, prohibiting the establishment, construction, conversion, or expansion of any data center citywide (with an exception for subordinate-use data/server rooms and existing lawfully-operating facilities). No pending data center applications were reported by the city as of adoption. Richmond is described as the second city in Contra Costa County (after Oakley) to adopt a data center moratorium.
• Outcome: 45-day urgency moratorium adopted while staff studies potential regulations and permanent zoning standards for data centers.

San Francisco

• Type: City
• Status: 🟡 Pending
• Date enacted: —
• Normalized date: — (unverified)
• Duration: Proposed 45-day moratorium; introduced but not adopted as of 2026-09-23
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-san-francisco-undated
• Legal basis: Proposed urgency ordinance introduced by Supervisor Shamann Walton (co-sponsors Chan, Fielder, Chen) on 2026-09-14/15
• What prompted it: Data centers regulated under a 2001 'internet service exchange' Planning Code definition predating generative AI; concern over water, energy, pollution, noise impacts especially in Bayview/SoMa.
• Affected projects: —
• Detailed status: Pending as of 2026-09-23. Introduced 2026-09-14/15; as of 2026-09-22 press coverage still described it as 'just proposed,' not yet voted on by the Board of Supervisors. [VERIFY instrument number; adoption date; primary source (news-only evidence) not confirmed at confidence 0.55 in the 2026-09 refresh]
• Outcome: —

San Juan Capistrano

• Type: City
• Status: 🟢 Active
• Date enacted: 2025-03-18 (second extension, Urgency Ordinance No. 1124, extending Ordinance No. 1116)
• Normalized date: 2025-03-18 (exact)
• Duration: Series of urgency-ordinance extensions of an original BESS moratorium (Ordinance No. 1116); current status as of the 2026 extension/expiration not independently confirmed
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-san-juan-capistrano-2025
• Legal basis: Urgency Ordinance No. 1116 (original), extended by No. 1119 and No. 1124 (2025-03-18), prohibiting new commercial BESS
• What prompted it: Opposition to a proposed BESS project in the city (referenced in Orange County Supervisor Foley correspondence).
• Affected projects: Compass Energy Storage Project (suspended at the state level, January 2026).
• Detailed status: Status as of 2026-09-23 uncertain. City documents confirm the moratorium was extended at least twice, most recently by Ordinance No. 1124 (2025-03-18). Trackers disagree on the current end date (eticaag: 2026-04-01; carina.energy's California BESS page, updated September 2026, describes San Juan Capistrano as 'previously reported as expired, has been reclassified as active' after data verification, and notes the underlying Compass Energy Storage project was suspended at the state level in January 2026 while 'the underlying moratorium ordinance remains in effect.' The city's own BESS overview page (DocumentCenter links) returned 404s during this research pass and could not be used to confirm the current status directly. [VERIFY primary source (news-only evidence) not confirmed at confidence 0.45 in the 2026-09 refresh]
• Outcome: —

Solano County

• Type: County
• Status: ⚪ Replaced
• Date enacted: 2024-01-23 (Board of Supervisors)
• Normalized date: 2024-01-23 (exact)
• Duration: Two-year urgency pause on large-scale BESS project approvals, replaced by permanent ordinance
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-solano-county-2024
• Legal basis: Urgency ordinance (extended 2024-02-27) enacting a pause on large-scale BESS approvals; replaced by a permanent BESS zoning ordinance adopted 2025-08-26
• What prompted it: Safety concerns near the Vaca-Dixon substation in Vacaville; farmland protection.
• Affected projects: —
• Detailed status: Replaced. The two-year moratorium adopted 2024-01-23 (extended 2024-02-27) was superseded when the Board of Supervisors adopted permanent BESS zoning regulations on 2025-08-26.
• Outcome: Permanent BESS zoning ordinance in effect as of 2025-08-26.

Tulare County

• Type: County
• Status: 🟢 Extended
• Date enacted: 2026-08-18 (Board of Supervisors, 4-1, Townsend dissenting); extended 5-0 on 2026-09-22 by 10 months 15 days
• Normalized date: 2026-08-18 (exact)
• Duration: 45-day urgency ordinance, extended 10 months 15 days on 2026-09-22
• Current end date: —
• Sectors: data center
• Moratorium ID: ca-tulare-county-2026
• Legal basis: Interim ordinance (Govt. Code 65858) on acceptance/processing/approval of permits for large-scale data centers in unincorporated county
• What prompted it: Triggered by Global Stack USA edge-computing proposal at the county fairgrounds; groundwater/SGMA limits, electricity demand, land use, generator noise.
• Affected projects: Global Stack USA edge-node proposal at county fairgrounds.
• Detailed status: Active as of 2026-09-23. Adopted 4-1 on 2026-08-18 (45 days); extended 5-0 on 2026-09-22 by 10 months 15 days to 2027-08-17, the maximum extension available without seeking a further extension. Supervisors separately took a 3-2 position opposing data center development countywide with an exception for enterprise facilities.
• Outcome: Staff continuing study of zoning, CUP, setback, noise, water/energy and backup-power standards.

Vacaville

• Type: City
• Status: ⚪ Replaced
• Date enacted: 2024-05-14 (City Council, 6-1)
• Normalized date: 2024-05-14 (exact)
• Duration: 45-day urgency ordinance extended repeatedly over ~2 years until replaced by permanent regulations
• Current end date: —
• Sectors: battery storage
• Moratorium ID: ca-vacaville-2024
• Legal basis: Interim urgency ordinance (Govt. Code 65858) prohibiting grid-scale BESS applications; repealed and replaced by a permanent BESS zoning ordinance adopted 2026-03-10
• What prompted it: Council concern about BESS development without adequate land-use policies/standards; ongoing L&T feasibility study on energy hubs.
• Affected projects: A proposed Menard Energy lithium-ion BESS project at the former Gibson Canyon Creek Wastewater Treatment Plant parcel was not extended/approved under the new ordinance.
• Detailed status: Replaced. Moratorium adopted 2024-05-14 and extended repeatedly; on 2026-03-10 the City Council unanimously adopted a permanent BESS ordinance (disallowing lithium-ion chemistry, allowing only non-lithium BESS at one parcel, 500-ft setbacks), superseding the moratorium.
• Outcome: Permanent BESS zoning ordinance in effect as of 2026-03-10.

Source: moratorium_inventory.csv · Methodology · Codebook.

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