Merus Power has brought online the Nordic region's first grid-forming battery energy storage system (BESS), a 30 MW / 36 MWh plant in Valkeakoski, Finland, built for Swiss energy company Alpiq to help stabilise a power system increasingly dominated by renewables. . Helen Ltd and Evli Fund Management Company Ltd's renewable energy fund, Evli Renewable Energy Infrastructure Fund II, have completed a major electricity storage project in Nurmijärvi. The lithium-ion-based storage facility is now operational. Swedish flexible assets developer and optimizer Ingrid Capacity has joined hands with SEB Nordic Energy's portfolio company Locus Energy to develop what is claimed to be Finland's largest and. . Verified by Fingrid, the system can independently maintain voltage and frequency, helping stabilise the grid as renewable generation increases.