Panasonic will introduce a large electric storage device for power by photovoltaic generation for housing self-sufficient for power consumed domestically. The housing will be introduced after 2011 in Japan. Eliy Power in which Daiwa House and Sharp invested will build a new plant to produce this electric storage device. The new product is made up of lithium ion battery, power exchanger, and control software. Panasonic will launch a storage system made up of cylindrical cells installed in the notebook PC in 2011. This storage system is almost the same size as the outdoor unit of an air-conditioner. The system has a storage capacity of 6 kW/hour equivalent to half of power requirements of a standard household. It is scheduled to be available for several hundred thousand yen. Currently, photovoltaic generation spreads to about 400,000 households in Japan. It is necessary to increase the number to 6.6 million households at least to realize the country’s objective to reduce global warming gases by 25% compared with the 1995 level by 2020.
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