California cities pull the plug on data centers after state regulations don’t scale up fast enough

Although California lawmakers recently passed a suite of laws intended to bring transparency to the development of new data centers, local communities across the state are signaling that disclosure isn’t enough. California currently ranks third among U.S. states in overall data center density, according to independent trackers like the US Data Center Map, with the state home to 366 of such facilities that are either fully operational, under construction, or moving through the planning process.

Local elected officials are proposing data center moratoriums to slow that momentum — if not stop it in its tracks. In the first half of October alone, Oakland’s city council unanimously approved a 45-day moratorium on new approvals, making it the first city in Alameda County and the fourth in the Bay Area to adopt such a measure. San Francisco approved a similar moratorium this month, while the Los Angeles County Board of Supervisors postponed a vote to permanently ban large-scale data centers, often called hyperscale facilities, on unincorporated land after receiving an overwhelming volume of public feedback.

In Santa Clara, city officials considered a moratorium vote, and are moving forward with new rules to govern data center development, including more stringent water and air pollution regulations. Alhambra residents will vote on a moratorium measure in the November election. Across California, at least 26 resolutions, moratoriums, or bans on data center development have been passed or proposed since June, according to the D.C.-based non-governmental organization Food & Water Watch, which tracks similar proposals nationwide.

The escalating pushback underscores a widening gap between state-level regulation and municipal action. Gavin Newsom last month signed into law seven new measures that focus primarily on disclosure requirements, environmental impact studies, and grid protection, grassroots groups and city councils are moving fast to halt construction entirely. “I have a hard time remembering something that caught fire the way the opposition to data centers has,” said Nicole Ghio, California Director at Food & Water Watch.

“Local municipalities have been able to respond quicker to the grassroots wave of opposition of people saying, ‘Hold on, let’s press pause. Let’s actually figure out what we’re doing before we commit to this huge change.’” Opponen…