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http://www.physorg.com/news/2011-08-solar-grid.html
The U.S. Department of Energy's National Renewable Energy Laboratory, with industrial partner Semikron, and with funding from the California Energy Commission, has developed a prototype of a 50-kilowatt inverter. Inside is a 50-kW modular power block the size of a microwave oven that can be included with a photovoltaic array, small wind turbine, battery charger, fuel cell or flywheel and control the flow of energy onto the electric grid.
The U.S. Department of Energy's National Renewable Energy Laboratory, with industrial partner Semikron, and with funding from the California Energy Commission, has developed a prototype of a 50-kilowatt inverter. Inside is a 50-kW modular power block the size of a microwave oven that can be included with a photovoltaic array, small wind turbine, battery charger, fuel cell or flywheel and control the flow of energy onto the electric grid.