Winda Energy will build a 50MW/100MWh electricity storage facility in Jämsä in central Finland as it expands its presence in the energy storage market.
The project is being developed with Czech tech energy company Second Foundation and follows the Rautavaara storage scheme announced last summer, said Winda Energy.
The company added that Second Foundation’s entry marks the exit of BHM Renewables, which has supported Winda throughout the project’s development phase.
Winda Energy stated that the Jämsä facility will be one of Finland’s largest battery projects and will support national grid stability by balancing electricity supply and demand.
Construction is scheduled to begin in early 2026 and the system will respond to grid frequency fluctuations within milliseconds while storing renewable energy for peak demand periods.
Chief executive Tuomas Hooli said: “The Jämsä project is a natural and strategic next step on our journey toward a more diverse portfolio of energy generation and storage.”
He added: “Since launching the Rautavaara project, we have progressed rapidly, and the new project in Jämsä, with nearly double the capacity, demonstrates our ability to scale our solutions to meet the growing needs of the market.”
Winda Energy stated that the project will follow its established partnership model, combining international technology expertise with local development work.