Thousands of Marin County residents suddenly found themselves in the dark today, when a midday power outage cut electricity across the Tiburon Peninsula and scattered pockets of the county. Homes and businesses reported lights flicking off, traffic signals going dead and some pumps shutting down as utility crews hustled into the hardest-hit neighborhoods. Residents, left refreshing outage maps and group chats, hunted for status updates while PG&E teams worked to isolate the problem and bring the power back.
Where the outage struck
According to the San Francisco Chronicle, PG&E’s outage tracker showed roughly 5,000 customers in Marin County without service, with the largest clusters on the Tiburon Peninsula. The Chronicle snapshot listed about 2,884 customers in Tiburon and 1,122 in Belvedere, along with smaller pockets in unincorporated Marin (918 customers), Mill Valley (97) and San Rafael (4). Those numbers reflect what appeared on the utility’s live map at the moment reporters checked it.
PG&E response and restoration timeline
Per PG&E's outage center, the company identified the affected circuits but had not yet posted a confirmed cause when the map was reviewed. Local coverage from Patch reported that the outage began shortly after noon, and PG&E’s early estimate put full restoration at around 8:15 PM. Customer counts and estimated restoration times are subject to change as crews track down faults and update the outage tracker.
Local impacts and safety reminders
Officials are reminding residents to treat any downed power line as live and to call 911 to report hazards rather than approaching them. The Tiburon Fire District’s guidance also asks people not to call the fire district for outage status and instead to lean on PG&E’s outage tools for information, while Marin County pages continue to urge residents to sign up for Alert Marin for emergency notifications. If outages drag on, county resource centers and community updates will be listed on local government websites and PG&E’s support site.
How to get help
Customers who lose power are asked to report outages through PG&E’s outage center or by calling 1-800-743-5000, and medical-baseline customers should contact both the utility and county services for extra assistance. We will update this story as PG&E and local officials release new information on restoration progress and safety guidance.
