SAN DIEGO, Aug. 11, 2011 /PRNewswire/ -- Today marks National 811 day and San Diego Gas & Electric Co. (SDG&E) is reminding customers to "call 811 before they dig" prior to starting any digging projects to avoid damaging hidden gas lines and injury.

By Wiedemann, Liz Stirling Energy Systems, which has applied to build a $1 billion, 750-megawatt solar power plant that could partially power San Diego Gas & Electric Co.'s proposed Sunrise Powerlink transmission line, says it has been "quietly perfecting" its technology.

By Elliot Spagat, The Associated Press SAN DIEGO - It seems like an idea any environmentalist would embrace: Build one of the world's largest solar-power operations in the Southern California desert and surround it with plants that run on wind and underground heat. Yet San Diego Gas & Electric Co.

By Elliot Spagat Associated Press SAN DIEGO -- It seems like an idea any environmentalist would embrace: Build one of the world's largest solar power operations in the Southern California desert and surround it with plants that run on wind and underground heat. Yet San Diego Gas & Electric Co.

By Chris Bagley, North County Times, Escondido, Calif. Apr.