Iron as a reactive metal has enormous potential to boost the energy transition. The project Clean Circles teams up scientists from multiple disciplines to explore how the metal and its oxides can be used in a cycle as carbon-free chemical energy carrier to store wind and solar power.
Metal Energy Hub opens at TU Darmstadt
November 19, 2025
Metals as Energy Storage: EU and state of Hesse fund project with three million Euros
How can renewable energy be stored safely and climate-neutrally over long periods of time? Researchers at TU Darmstadt are now addressing this and other key questions of the future in the newly established Metal Energy Hub (MEH) – thereby continuing the work initiated in Clean Circles.
Energy industry looks to metals as energy storage
October 14, 2025
Article published in the industry bulletin “Energiewirtschaftliche Tagesfragen”
The current issue of Energiewirtschaftliche Tagesfragen discusses the potential of iron for the long-term storage and transport of renewable energy.
Clean Circles is funded by the Hessian Ministry of Higher Education, Research, Science and the Arts.