SAN FRANCISCO—Faced with potentially ruinous lawsuits over California’s recent wildfires, Pacific Gas & Electric Corp. filed for bankruptcy protection on Jan. 29, in a move that could lead to higher bills for customers of the nation’s biggest utility and reduce the size of any payouts fire victims receive.

Michael Picker, President of the California Public Utilities Commission, second from left, listens to public comments with commissioners Martha Guzman Aceves, from left, Liane M. Randolph and Clifford Rechtschaffen during a meeting in San Francisco, on Jan. 28, 2019. Jeff Chiu/AP Photo