The Fraunhofer Institute for Chemical Technology ICT will showcase its newly developed large-scale flow battery, which is under construction in Pfinztal, near Karlsruhe. The flow battery - an advanced long-duration energy storage system - will be able to store and discharge energy up to 20 MWh, improving the technical and economic performance of the research institute’s local power supply and enabling the integration of a 2 MW wind turbine planned for spring 2017.

Redox-flow battery systems combine the advantages of Li-ion batteries and fuel cells for stationary energy storage. They are very efficient - 75% efficiency in current technical solutions - and their service life is about 5 times longer than that of conventional batteries, with more than 10,000 additional cycles. The liquids used are not flammable, so the systems are also safer to use.

Lithium-ion Battery