Merus Power, together with Alpiq, has achieved a historic milestone for the Nordic energy market: the delivery of the region's first grid-forming battery energy storage system (BESS). The 30 MW / 36 MWh system, located in Valkeakoski, Finland, is not only a technological breakthrough but also a. Swedish renewables developer OX2 today said it has taken the investment decision for 235 MW/470 MWh of battery projects in Finland, its first energy storage sites in the Nordic country, clearing the path for construction works to start immediately. The energy storage facility will connect to E. ON's regional grid in Horsaryd, located in Karlshamn Municipality, with the aim of stabilizing the power grid and increasing the.