Augwind and SEFE Storage have entered into a memorandum of understanding to investigate how Augwind’s AirBattery technology could be integrated into salt caverns for long‑duration electricity storage.
The collaboration centres on assessing the commercial potential of isothermal compressed air systems capable of holding significant volumes of energy for extended periods.
SEFE Storage is among Europe’s largest natural gas storage operators, with more than six billion cubic metres of capacity under management – around a quarter of Germany’s total. The company runs several storage facilities across the country, including its site in Jemgum.
The study will consider the feasibility of positioning an AirBattery installation near SEFE Storage’s existing Jemgum site. The location currently hosts 10 natural gas storage caverns, and SEFE Storage plans to add new caverns designed for hydrogen storage. The technical review will examine how these future caverns could be linked to an AirBattery system.
To support the evaluation, the companies plan to appoint a recognised third‑party consultant to analyse the business case, including the wider prospects of the German power storage market.
SEFE Storage will bring its experience in large‑scale storage infrastructure and project development, while Augwind will contribute its expertise in isothermal compressed air energy storage.
