Governor Gavin Newsom signed seven data center bills on September 21, 2026, and the two that carry the most weight for household electric bills, SB 886 and AB 2383, are built around one idea: the companies that plug giant server campuses into the grid should pay for the wires and power plants that serve them. All seven take effect January 1, 2027, though the California Public Utilities Commission has until the start of 2028 to write the rules that make the cost protections work.
The package arrives as utilities field a flood of requests for large loads. In its summary of the laws, the Foley & Lardner law firm cited grid operator projections that data centers will add roughly 2.3 gigawatts of demand by 2030, and about 2,300 megawatts of data center applications had already been queued at Pacific Gas and Electric alone as of 2024.
Seven bills, three ways of charging for power
The governor’s office listed the seven measures by author: AB 1577 from Assemblymember Rebecca Bauer-Kahan on reporting, AB 2383 from Assemblymember Rick Chavez Zbur on electricity, AB 2469 and AB 2619 from Assemblymember Diane Papan on water, SB 886 from Senators Steve Padilla and Jerry McNerney, SB 887 from Padilla on environmental review, and SB 1168 from McNerney on rate structures. Only three of them, SB 886, AB 2383 and SB 1168, deal directly with who pays for electricity.
SB 886, titled the California Technology Innovation and Ratepayer Protection Act, covers the transmission side. Data centers that connect at transmission level must, in the words of a National Law Review summary, “bear cost responsibility for all transmission facility upgrades and usage.” AB 2383 adds parallel tariffs for the local distribution grid and for generation, and SB 1168 directs the commission to set rate structures for data centers.
Fees designed to keep stranded costs off other bills
The clearest anti-cost-shift device is the early termination fee. Under SB 886, a customer that leaves within ten years, or fails to ramp up to the load it projected, owes a fee that, per Foley’s reading of the bill, “would not be less than the revenue gap over the 10-year term.” A utility that builds a substation for a campus that never fills, or that shuts, would otherwise spread the leftover cost across everyone else.
Refunds of a data center’s upfront contribution are capped at 75 percent of the utility’s annual net transmission revenue from that customer, and applicants must disclose duplicate interconnection requests filed in other utility territories, a nod to the speculative queue-stuffing that inflates demand forecasts. AB 2383 requires generation-cost payments to run at least ten years and caps the size trigger for the generation tariff at 25 megawatts of peak demand. Facilities exempt from that tariff include publicly funded research, public safety operations and utility operations.
The Nossaman law firm described the goal in the bill’s own terms: tariffs must “prevent the creation of stranded costs for, or cost shifts to, non-data center ratepayers,” and generation charges must be billed separately from transmission and distribution charges.
Newsom framed the package the same way. The release quoted him saying the laws ensure that Californians “remain in the driver’s seat,” and it said the measures prevent cost-shifting onto low-income customers and that those profiting from data centers do not do so at Californians’ expense.
What the Public Utilities Commission still has to write
Much of the work is deferred. The Stoel Rives law firm noted that the commission must establish or update data center tariffs by January 1, 2028, and that its open rulemaking on advanced electric rate design, R.26-04-009, is expected to be the venue for implementation. The transmission interconnection rules apply only to agreements signed on or after January 1, 2027.
A separate analysis from Mgrid points to the gaps. It found that no bill states a dollar or megawatt trigger for every new duty, that SB 1168 sets no filing deadline for the commission’s rate-structure proceeding, and that the laws reach the next campus rather than the installed base: California’s existing 296 data centers already hold their service arrangements.
Reporting and water rules that sit alongside the rate rules
AB 1577 requires operators of facilities of 10 megawatts or more to file details with the California Energy Commission, including peak load, installed IT capacity, total kilowatt-hours and power usage effectiveness. The commission will publish the data annually in anonymized, aggregated form and fold a data center assessment into its 2029 Integrated Energy Policy Report. The reporting duty falls on the owner or operator of the whole facility, not on individual tenants.
The water bills work through local permitting. AB 2469 asks new or expanded data centers for a water supply assessment and, from 2028, a water scarcity plan with staged drought measures, and makes the applicant pay for any conveyance or treatment upgrades. SB 887 ends categorical environmental exemptions for data centers, leaving a streamlined path only for projects that meet nine conditions, among them prepaying full interconnection costs and reaching 100 percent zero-carbon hourly electricity within five years of operation. Whether the tariffs bite depends on numbers not yet written. The commission’s 2028 deadline, the 25-megawatt ceiling in AB 2383 and the 10-year fee window will decide how much of a new campus’s grid cost lands on its own meter.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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