Japanese diversified group ORIX Corporation (<a href="https://quote.jpx.co.jp/jpx/template/quote.cgi?F=tmp/e_stock_detail&MKTN=T&QCODE=8591" target="_blank">TYO:8591</a>) announced today it will build a 134-MW/548-MWh power grid energy storage plant in Maibara, Shiga Prefecture.