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Europe is betting big on a battery that runs for four days [View all]
https://electrek.co/2026/06/22/europe-is-betting-big-on-a-battery-that-runs-for-four-days/Michelle Lewis | Jun 22 2026 - 12:01 am PT
Long-duration energy storage startup Ore Energy has landed what it says is the largest iron-air battery deal in continental Europe so far.
The Netherlands-based company announced an agreement with Dutch energy supplier Budget Thuis to deploy 1 gigawatt-hour (GWh) of iron-air energy storage. The deal starts with a committed 400-megawatt-hour (MWh) first phase that Ore Energy plans to deliver in 2028.
The project is notable not only for its size but also because it’s the first iron-air storage agreement with a European energy supplier. As countries add more wind and solar power, utilities are looking for ways to store renewable energy for longer periods when weather conditions don’t cooperate.
…
Iron-air batteries aren’t perfect. They’re bulkier and less efficient than lithium-ion batteries, so they lose more energy along the way. But for a grid-scale system that’s designed to store cheap wind and solar power for days at a time, size matters a lot less than cost. That’s where iron-air’s simple, inexpensive materials could give it an edge.
…
Long-duration energy storage startup Ore Energy has landed what it says is the largest iron-air battery deal in continental Europe so far.
The Netherlands-based company announced an agreement with Dutch energy supplier Budget Thuis to deploy 1 gigawatt-hour (GWh) of iron-air energy storage. The deal starts with a committed 400-megawatt-hour (MWh) first phase that Ore Energy plans to deliver in 2028.
The project is notable not only for its size but also because it’s the first iron-air storage agreement with a European energy supplier. As countries add more wind and solar power, utilities are looking for ways to store renewable energy for longer periods when weather conditions don’t cooperate.
…
Iron-air batteries aren’t perfect. They’re bulkier and less efficient than lithium-ion batteries, so they lose more energy along the way. But for a grid-scale system that’s designed to store cheap wind and solar power for days at a time, size matters a lot less than cost. That’s where iron-air’s simple, inexpensive materials could give it an edge.
…
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