California AB 2383 data center electric tariffs (2026)

AB 2383 (Zbur), 2025-26 Reg. Sess.; adds Pub. Util. Code §§ 945.1, 945.4, 945.5, 945.6, 945.8. Ch. 435, Stats. 2026; approved and chaptered Sept. 21, 2026. Assembly concurrence in Senate amendments Aug. 31, 2026 (Ayes 67, Noes 2). LEGISLATIVE COUNSEL'S DIGEST: requires the CPUC, in a new or existing proceeding, to require each electrical corporation to file a transmission and distribution service tariff and a generation service tariff for 'participating customers' (data centers tariffed under the article); requires each community choice aggregator or electric service provider to adopt a generation service tariff for data centers on or before January 1, 2028. DEFINITIONS (§ 945.1): 'data center' — facility housing computing infrastructure (GPUs/CPUs, servers, storage, networking, power and cooling) primarily for processing, storing or distributing electronic data; 'facility' aggregates contiguous/adjacent commonly owned or controlled property; electrical cooperatives excluded from 'electrical corporation'. Violations of CPUC orders implementing it are crimes under the Public Utilities Act (state-mandated local program). KQED: works with SB 886 to create separate rate structures so data centers bear their own infrastructure costs. VERIFIED TEXT (billNavClient): T&D tariff must ensure participating customers 'pay a reasonable share of the costs relating to wildfire mitigation, wildfire liability, electrification and environmental programs'; generation payment mechanism minimum duration 'at least 10 years' incl. non-completion and early termination fees and protection if load is below anticipated; behind-the-meter zero-emissions resources may reduce generation funding requirements; CPUC (and CCAs/ESPs for their tariffs) must set a minimum peak demand threshold that may not exceed 25 megawatts; generation tariff does not apply to publicly funded research facilities, public safety facilities, publicly funded national security facilities, publicly owned facilities, or utility facilities (incl. terrestrial telecom). Non-urgency statute. EFFECTIVE DATE 2027-01-01 per Foley & Lardner alert ('primarily take effect on January 1, 2027'), not stated on the leginfo page.