Using old mines to store renewable energy

Mine Storage has teamed up with Swedish electricity supplier Mälarenergi to develop storage facilities for renewable energy. The intention is to jointly investigate the technical and commercial conditions for developing up to three facilities in Bergslagen, which are in the vicinity of Mälarenergi. The respective plant is estimated to be able to produce an electrical output of approximately 15 MW and with an energy quantity of 30-75 MWh per cycle. Mine storage consists of using decommissioned mines, where equipment is installed to pump up water at low electricity prices and then release the water through a turbine connected to a generator at times when the market needs it to support the electricity system or when prices are high. This then contributes to the stability of the electricity system and more electricity production during peak price hours, which in case of large-scale expansion can have a price-dampening effect. By using state-of-the-art hydropower technology that reacts quickly enough to help balance the grid, mine storage facilities can enable the green energy transition. Learn more: https://www.minestorage.com/mine-storage-and-malarenergi-strengthens-their-collaboration/