A review of the current status of energy storage in Fi original version: Lieskoski, S., & Björklund-Sänkiaho, M. Finland holds an enviable position in terms of the production of cleaner energy, with a diverse mix of. Heliostorage specializes in efficient energy storage, particularly through their innovative thermal energy storage solutions that help reduce carbon emissions and energy costs. By capturing and storing energy from the sun, they enhance heat pump efficiency and provide reliable heating without. The energy storage facility delivered by Merus Power to Lappeenranta, Finland, has been completed and put into market use on 15 May 2025. The energy storage facility is owned by a joint venture between Ardian's Clean Energy Evergreen Fund and the local energy provider Lappeenrannan Energia. With over 300MW of grid-scale projects coming online in the next two years , this Nordic nation's storage factories are solving critical energy challenges through.