Commencement of operation of the world's largest storage battery facility [News from Japan]

Natural electric power resources such as solar cells and wind power have been more widely used in recent years. However, the output from such power resources very often fluctuates, depending on various natural conditions. Consequently, we need technologies that can store electric energy in order to realize stable operation of power grids incorporating natural power resources. Pumped hydropower is one such technology, but it has become difficult to find suitable places to build new pumped hydropower stations.