San Francisco, CA — 45-day data center moratorium (approved Oct. 6, 2026)

Proposed interim moratorium ordinance introduced at the San Francisco Board of Supervisors September 15, 2026 by Supervisor Shamann Walton, with Supervisors Connie Chan, Jackie Fielder and Chyanne Chen as co-sponsors. Terms as introduced: a 45-day suspension of city approvals for new data centers, applicable regardless of facility size; extendable up to a cumulative 22 months and 15 days, the maximum term of a California interim urgency zoning ordinance under Cal. Gov't Code s. 65858 (45 days, then an extension of 10 months 15 days, then a further one year), pending Planning Commission investigation of environmental impacts and development of longer-term controls. Stated sponsor objective beyond the interim measure: a permanent prohibition on new data centers. Regulatory context: San Francisco presently regulates such facilities under the Planning Code classification 'internet service exchange,' a definition adopted in 2001. Comparative note drawn from the reporting: the any-size scope is explicitly contrasted with federal proposals reaching only facilities above 20 MW. No committee referral, hearing date, or adoption vote is established as of 2026-09-20.