Edison Power Co Ltd announced Aug 7, 2014, that it will build a 2MW solar power plant in Tokunoshima Island, Kagoshima Prefecture, Japan.
Edison Power sells solar power generation systems and is based in Kisarazu City, Chiba Prefecture, Japan.
At the plant, Edison Power will install a power storage system with an output of 2MW and a capacity of 1MWh to stabilize output fluctuations. Except for verification projects carried out by the Japanese government such as in Miyakojima, Okinawa Prefecture, it will probably be Japan's first mega (large-scale) solar power plant that is equipped with a power storage system using lithium-ion (Li-ion) batteries and connected to a power grid.
Mifuneholdings Ltd (Osaka City, Osaka Prefecture), which deals with real estate, etc, is the power producer for the plant. And Edison Power provides EPC (engineering, procurement and construction) services. The power storage system using Li-ion batteries is a product of Samsung SDI Co Ltd.
In July 2014, Kyushu Electric Power Co Inc announced that it had temporarily stopped replying to applications for the grid connections of renewable energy-based power generation facilities planned to be built in isolated islands. However, it also announced that it would have individual negotiations with power producers who will install storage batteries to store surplus electricity or propose measures to reduce output.
Using the construction of the mega solar plant as an opportunity, Edison Power and Samsung SDI agreed to cooperate in selling power storage systems using large-size Li-ion batteries in the Japanese market.
Based on the agreement, Edison Power plans not only to sell power storage systems designed to secure lifelines at the time of a power failure but to build mega solar plants using Samsung SDI's large-scale power storage systems on 20 sites, especially in Hokkaido and islands in Okinawa Prefecture, etc, in five years.