San Diego Gas Electric

San Diego Gas Electric s expander is installed in parallel to a major city gate station. This type of system could be installed on a pressure reducing station supplying natural gas to an electric power plant. Large regulator stations serving industrial customers are another possible application. 

San Diego Gas Electric s system was originally installed as a research project. The intent of the research project was to test the hardware in this application, test the feasibility of operating such a system remotely with no local operators, and to prove the economics. Similar systems had been installed within process plants where operators were present to start and stop the system and monitor its operation. However, this was the first system installed on a natural gas transmission system with completely remote operation. 

Figure 8-12. San Diego Gas Electric Company s gas transmission system.

Both Southern California Edison and San Diego Gas Electric have signed contracts with Stirling Energy Systems of Phoenix for two power plants of higher efficiency (30%) than the solar thermal ones. A 500 mW plant will be built at Victorville, California, in the Mojave Desert for Southern California Edison. This construction is estimated to take 3-4 years. The plant will consist of 20,000 dishes over a 4,500 acre (18 km2 = 7 mi2) area. A 300 mW plant will also be built at Imperial Valley, Calexico, California, for San Diego Gas and Electric over 2,000 acres (8 km2 = 3 mi2). In 2008, Southern California Edison also started an 875 million project that will cover some 2 square miles of unused rooftops and generate 250 mW of electricity. 

Bonneville Power. Pacific Gas Electric. San Diego Water and... 

Dagan G, Agam G, Krakov V, Kaplan L (2000) Carbon membrane separator for elimination of SF emissions from gas-insulated electrical utilities. In Proc. of the EPA Conference on SEj and Environment Emission Reduction Strategies, San Diego, CA, USA (www.epa.gov/ highgwpl/sf6/agenda.html). 

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