Contra Costa County

Moratoriums and bans

1. April 14, 2026 Oakley: Moratorium. The council unanimously adopted a 45-day moratorium on data center applications, extendable up to two years under state law. (San Francisco Chronicle (via Industry Insider California), April 16, 2026)

Updates, newest first

1. Sept. 18, 2026 Pittsburg Data Hub (AVAIO Perseus) · SFist reported the environmental group had settled with the city and developer for renewable power, recycled water and a $750,000 payment, and that the city had paused further action. (SFist, Sept. 18, 2026)
2. June 15, 2026 Pittsburg Data Hub (AVAIO Perseus) · More than 100 residents commented, mostly against the project, at a council meeting; the city said it would hold a workshop on data centers. (Contra Costa News, June 16, 2026)
3. April 14, 2026 Bridgehead Industrial Project · After the developer withdrew its plans, the City Council unanimously adopted a 45-day moratorium on data center projects. (San Francisco Chronicle (via Industry Insider California), April 16, 2026)
4. April 14, 2026 Oakley: Moratorium · The council unanimously adopted a 45-day moratorium on data center applications, extendable up to two years under state law. (San Francisco Chronicle (via Industry Insider California), April 16, 2026)
5. Jan. 20, 2026 Bridgehead Industrial Project · The Planning Commission voted 3-2 for the rezoning, requiring further review for any data center. (Contra Costa Pulse (Bay City News), March 9, 2026)
6. Nov. 21, 2025 Pittsburg Data Hub (AVAIO Perseus) · The CEC issued its final initial study and mitigated negative declaration for 37 diesel backup generators (24-SPPE-01); its project page lists the plant as exempt from state licensing without giving the exemption date. (California Energy Commission, undated)
7. Dec. 2, 2024 Pittsburg Data Hub (AVAIO Perseus) · The Center for Biological Diversity sued the city in Contra Costa County Superior Court under CEQA. (E&E News by POLITICO, Dec. 4, 2024)
8. Nov. 4, 2024 Pittsburg Data Hub (AVAIO Perseus) · The Pittsburg City Council approved the technology park's environmental impact report. (E&E News by POLITICO, Dec. 4, 2024)

Statewide

No state sales or use tax exemption specific to data centers; SB 58 (2025), a partial exemption for renewable-energy-related equipment, died in the Senate Revenue and Taxation Committee. (Mayer Brown, Dec. 1, 2025) SB 57 (Padilla, 2025), signed Oct. 11, 2025, has the CPUC assess whether new data center load shifts costs to other customers and report by Jan. 1, 2027; AB 93 (2025 water-use estimates) was vetoed. (Mayer Brown, Dec. 1, 2025) Seven bills signed Sept. 21, 2026, mostly effective Jan. 1, 2027: SB 886 and AB 2383 (CPUC data center tariffs so large loads bear their grid and supply costs), SB 1168 (rate-structure review), SB 887 (limits CEQA categorical exemptions for data centers), AB 2469 (water disclosure before local approval), AB 1577 and AB 2619 (energy and water reporting). (KQED, Sept. 21, 2026; The National Law Review (Greenberg Traurig), Oct. 5, 2026) Large-load tariff: PG&E Electric Rule 30 for transmission-level retail customers (CPUC A.24-11-007, filed Nov. 21, 2024); the CPUC partly granted interim use in July 2025, and the proceeding remained open in August 2026. Individual agreements go by advice letter (e.g., Resolution E-5455 for Google, held to Oct. 29, 2026). (California Public Utilities Commission, Aug. 7, 2026; California Public Utilities Commission, June 20, 2025; Mayer Brown, Dec. 1, 2025; Stoel Rives, Oct. 14, 2026) Backup generators of 50-100 MW at data centers go through the California Energy Commission's small power plant exemption (SPPE), with the CEC as CEQA lead agency; most large California data centers appear in its dockets. (California Energy Commission, undated; Union of Concerned Scientists, May 2026) California data centers →