LA County Freezes Giant AI Data Centers as Solis Pushes Permanent Ban
Los Angeles County has enacted a temporary moratorium on new hyperscale data centers in unincorporated areas, with a permanent ban proposed by Supervisor Hilda Solis to address concerns about public health, environmental impact, and utility strain. Several cities in the San Gabriel Valley have also moved to ban or restrict data center development, highlighting growing local opposition. The proposed county ordinance is scheduled for review by the Board of Supervisors.
Los Angeles County's planning department has enacted a temporary moratorium on new hyperscale data centers in unincorporated areas, effective September 17, 2026. This freeze is a precursor to a proposed permanent ordinance, spearheaded by Supervisor Hilda Solis, chair of the Board of Supervisors, which seeks to ban AI hyperscale data centers. Solis emphasizes that technological growth should not compromise public health, environmental protection, or residents' quality of life. The Board is set to review the permanent ban proposal on October 6, following a Community Services Cluster meeting.
The county's decision follows a vote in April to direct health, planning, public works, and sustainability departments to study data centers' impact on utilities and health. This comes amid a wave of local actions in the San Gabriel Valley, where cities like Monterey Park, Irwindale, and Commerce have already passed bans or moratoriums. Monterey Park voters notably approved an outright ban with 86% support, spurred by opposition to an HMC StratCap project that was ultimately withdrawn. Concerns driving these actions include excessive water consumption (up to 5 million gallons daily for a single hyperscale facility), electricity strain that could require fossil-fuel peaker plants, constant noise, and air pollution from diesel backup generators.
Opposing the moratorium is organized labor, including IBEW Local 11 and the Western States Regional Council of Carpenters, who warn of significant job losses from such bans. The county's actions are also set against a backdrop of state-level legislative efforts, with State Senator Sasha Renée Pérez introducing Senate Bill 978 to ban diesel generators, create a special electricity rate class, and mandate developers cover transmission upgrade costs. Despite this local and state pushback, California remains a top market for data center expansion, with over 200 active facilities statewide, underscoring the tension between industry growth and community concerns.