AI-generated conceptual illustration of an old coal power station at dusk with heaps of grey iron powder and red iron oxide in the foreground
Energy storage

Rust as a battery: the case for burning iron in old coal plants

/ Energy storage

A new EWI Cologne study for TU Darmstadt and the DESERTEC Foundation models iron powder as a seasonal energy store and finds savings of up to 18 billion euros a year in a European system. The numbers are scenarios, and the technology is still at demonstration scale.