July 8, 2026
The company says its technology can deliver storage durations of 8 to 150 hours. Image: Elestor.
Dutch long-duration energy storage (LDES) developer Elestor has partnered with Windpark Zeewolde to deploy a 20MW/200-800MWh hydrogen-iron flow battery storage system at what is described as Europe’s largest onshore wind farm.
Windpark Zeewolde is a 322MW wind farm located in the Flevoland province of the Netherlands, comprising 222 turbines developed by a cooperative of local farmers and landowners.
Despite generating substantial renewable energy, the plant faces a common constraint across the Netherlands. Grid congestion prevents it from exporting all its available generation during peak periods.
