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A PG&E truck.

Nearly 3,800 Calistoga customers lost power Tuesday afternoon, according to the Pacific Gas & Electric Company.

The outage occurred around 4:30 p.m. and power was expected restored by 7:30 p.m., according to a Nixle alert from the City of Calistoga.

PG&E spokesperson Deanna Contreras said the utility was seeing an increase in heat-related outages across the Bay Area, especially in the East Bay, but did not anticipate having to initiate a power shutoff power in Napa County.

The Calistoga PG&E substation was experiencing generator difficulties and staff had begun trying to solve the problem, according to a Nixle alert from the City of Calistoga at 4:45 p.m.

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Public Safety Reporter

Courtney Teague is the Napa Valley Register public safety reporter. She can be reached at 707-256-2221. You can follow her reporting on Twitter and Facebook, or send her anonymous tip at: tinyurl.com/anonymous-tipbox-courtney.