Okinawa Electric Power Company, a power company in Okinawa Prefecture, Japan, will now receive next-generation electric power system from Toshiba Corp. The system includes storage batteries to store the electricity generated by solar panels and other available sources. The system is scheduled to be tested in Miyakojima, Okinawa, from the autumn of 2010. In order to conduct the test, photovoltaic systems (3MW, 1MW) and storage batteries (4MW, 200kW) will be installed in addition to existing facilities that includes two thermal power plants (21,500kW, 40,000kW), a gas turbine plant (15,000kW) and five wind plants (900kW x 4, 600kW x 1). The test will also measure the voltage rise, frequency adjustment, etc as the output from solar and wind farms keep changing.
The expected amount of electricity is estimated up to 3MW of photovoltaic electricity by a mega solar power plant and 1MW at industrial plants and residences. In the entire plan, Toshiba’s ‘SCiB’ 4MW sodium-sulfur batteries and 200kW lithium-ion batteries will be used. These batteries have faster charge-discharge cycle due to the included lithium titanate negative electrode. Sharp Corp’s polysilicon solar cells have been chosen for the photovoltaic systems.
Via: Techon
