California Signs Seven Data Center Laws Requiring Water and Electricity Disclosure and Ratepayer Protections
California Governor Gavin Newsom signed a package of seven bills on September 21, 2026, establishing what officials called the most comprehensive data center regulatory framework in the nation. The laws require data centers to disclose water and electricity usage, fund grid upgrades, and submit to environmental review.
California Governor Gavin Newsom signed seven data center bills into law on September 21, 2026, establishing what state officials described as the most comprehensive regulatory framework for the data center industry in the United States.
The legislation targets the rapid expansion of AI-driven data centers, which have placed significant new demands on California's electrical grid and water supply. The laws are designed to shift the financial burden of infrastructure upgrades from residential ratepayers to data center operators.
Three of the bills, SB 1168, SB 886, and AB 2383, require data centers to pay their fair share of grid upgrade costs and comply with state clean energy procurement requirements. Operators must provide upfront collateral or prepayment to protect other ratepayers if their actual electricity consumption falls below projections.
AB 2469 and AB 2619 establish mandatory water disclosure requirements. Local governments cannot approve new or expanded data centers until developers provide detailed information about projected water demand and supply. Starting January 1, 2028, operators must also submit water scarcity plans.
AB 1577 requires data centers to report energy consumption, power usage effectiveness, and water use to the California Energy Commission.
SB 887 removes data centers from blanket exemptions under the California Environmental Quality Act. Projects can qualify for expedited judicial review only if they commit to high standards of water and energy conservation, such as using waterless cooling or recycled water.
The legislation faced opposition from the Data Center Coalition, which represents Google, Microsoft, and OpenAI. Industry representatives argued the rules could hurt California's competitiveness. Newsom had previously vetoed water disclosure legislation in 2025 but reversed course in 2026 amid growing public backlash over rising utility costs and grid strain.
