EnergySecurities group's first project expected to open in Hokkaido in 2027The spread of solar farms and other renewable energy projects in Japan is fueling demand for battery storage. (Photo by Shinya Sawai)RYUTA MINAMIHATAMay 19, 2026 00:04 JSTTOKYO -- Japan's Daiwa Securities Group plans to invest 100 billion yen ($630 million) in battery storage facilities through 2030 to capture growing electricity demand from the tech sector, Nikkei has learned.