text: Kodwa uthe kungenzeka kuthathe ishumi leminyaka ngaphambi kokuthi i-PG&E  ingabe isasebenzisa ukucima ugesi njengethuluzi lokuvika imililo yequbula, esukela kwakubonile kumava akhe ase-San Diego Gas & Electric, eyaqala umsebenzi wayo endleleni yokwenza emva kwemililo ka-2007.