A complaint filed by solar advocates argues that California's two largest utilities routinely fail to meet state-mandated deadlines to connect rooftop solar panels to the electric grid. The complaint urges the California Public Utilities Commission to hold utilities accountable. The commission is reviewing the complaint, including whether it should require utilities to comply with the timeline it established years ago. When California residents adds solar panels to their rooftops they are supposed to be connected to the grid. The utilities are required to pay for power the customer generates but does not use. Pacific Gas & Election and Southern California Edison say they'll address the complaint through regulators.