The following research projects provide the basis for Iron Energy’s hydrogen storage systems.
Zürich
Pilot Plant ETH Hönggerberg
In 2023, a pilot plant was completed on the Hönggerberg campus of ETH Zurich. The plant consists of stainless steel tanks in which around 10 megawatt hours of hydrogen can be stored with the help of stored commercial iron ore. The plant is also equipped with an electrolyzer that produces hydrogen from water in order to store it chemically in the iron ore.
10 tons of iron ore in 3 stainless steel tanks
Approximately 10 megawatt hours of energy
Covers the electricity requirements for 3 to 5 households in winter
The first prototype of the energy storage system was built on a small scale in the laboratory at ETH Zurich with an internal volume of 210 liters. This provided valuable insights into the process and design of the system, which will contribute to the optimization of future storage tanks.
250 kg iron ore
Approximately 250 kilowatt hours of energy
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