Höganäs Energi has commissioned Mine Storage to evaluate the former Höganäs mine for conversion into a long-duration energy storage facility. The staged pre-study will assess site suitability, engineering design and grid integration. Building an energy storage facility in the SE4 sector would contribute to regional flexibility and become a welcome addition to Mine Storage’s expanding portfolio of mine-based storage projects.
The assignment is structured as a staged pre-study with defined work packages and decision gates. The scope covers geological suitability, underground conditions, technical design parameters, environmental prerequisites, and system integration — including grid connection, operational roles in the local and regional power system, and the potential contribution to resilience and security of energy supply.
The work combines Mine Storage’s development framework and technical screening methods with local site knowledge and historical data from the energy company and the surrounding community.
Mining in the Höganäs and Kulla peninsula area dates back to 1797. Over nearly two centuries, an extensive network of underground workings was developed for coal and clay extraction. The last coal mine closed in 1961, leaving significant underground volumes and water-filled cavities that may be suitable for underground energy storage.
The pre-study will determine whether the site meets the technical, environmental and economic criteria required to proceed with further investigations and eventually to project development. The project forms part of Mine Storage’s broader strategy to develop a portfolio of repurposed mine sites into long-duration energy storage assets in partnership with local utilities and municipalities.
