Pumped Hydro Storage - developer of the next generation large scale energy storage We are reinventing the world's most mature type of energy storage and equips it with the tools necessary to become vital part of the energy transition. Our self-developed concept for constructing pumped hydropower in mines will not only minimize the environmental impacts, but also the CAPEX by using existing reservoirs and infrastructure. This way we aim to create the world's cheapest and sustainable solution for long duration storage, to facilitate the energy transition. We are currently developing our pilot facility at Åland. Follow us and visit our website to learn more about the solution and our projects.