Just over 1,000 homes were still affected by a gas outage late Monday in the East Bay, according to Pacific Gas and Electric.
The service outage began Sunday in the Discovery Bay and Byron areas, when temperatures dipped down into the 30s. More than 6,000 customers were without gas late Sunday and into early Monday.
PG&E crews had to turn on the gas house by house.
Two hundred PG&E employees on Monday visited 5,700 homes and were able to restore service to 4,500 customers, the utility said. About 1,150 homes were still affected by the outage late Monday due to nobody at home when crews visited, according to PG&E.
PG&E spokesperson Mayra Tostado said that the utility had problems with its gas distribution system in Discovery Bay starting Sunday at 1 a.m. Officials on Monday said a regulator malfunctioned that controlled the pressure on the gas line.
Warming centers were set up at Timber Point Elementary School, 40 Newberry Lane, and at the Discovery Bay Community Center, 1601 Discovery Bay Blvd., in Discovery Bay. Officials said about 50 people showed up at the warming centers.
Discovery Bay resident Hanna Venables brought out a fire pit Sunday evening, instead, and kept warm with her neighbors.