http://www.pureenergysystems.com/news/2005/08/11/9600147_Edison_Stirling_largest_solar/index.html

http://www.pureenergysystems.com/news/2005/08/11/9600147_Edison_Stirling_largest_solar/index.html: "20-year purchase agreement between Southern California Edison and Stirling Energy Systems, Inc. will result in 20,000 dish array, covering 4,500 acres, and capable of generating 500 MW -- more electricity than all other U.S. solar projects combined."