“Ore Energy, a Netherlands-based energy startup pioneering iron-air long-duration energy storage, today [7/30/25] announced that it has successfully connected its flagship iron-air battery system to the electric grid in the city of Delft — the first iron-air system to be grid-connected and fully operational anywhere in the world…

Where lithium-ion peaks at 4 to 8 hours of storage, Ore Energy’s iron-air battery holds power for 100 hours or more, enabling multi-day load shifting, better integration of renewables, and reduced need for fossil backup. Unlike conventional batteries, which rely on scarce or flammable materials, Ore’s iron-air chemistry uses safe, abundant elements with no reliance on lithium, cobalt, or rare earths.”

From Tech.eu.