Sempra U.S. Gas & Power dedicated the 150-MW first phase of the Mesquite Solar facility, located in Arlington, Ariz., about 40 miles west of Phoenix. Sempra says that when it’s complete, the Mesquite Solar Complex will be North America’s largest PV installation. Construction began in June 2011 Pacific Gas & Electric will purchase the output under a 20-year contract. With Mesquite 1 operating, Sempra U.S. Gas & Power’sportfolio reaches 300 MW.