SMRTR Science & EngineeringJun 23, 2026Interesting Engineering

Europe’s largest 1 GWh iron-air battery will store clean power for 100 hours

SMRTR summary

Dutch startup Ore Energy and energy supplier Budget Thuis have signed Europe's largest iron-air battery storage deal — 1 GWh capable of storing clean power for up to 100 hours. Starting with a 400 MWh phase in 2028, the system uses iron, water, and air to bridge multi-day renewable energy gaps, displacing fossil fuel backup plants.

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