Large-Scale Battery Feeds Renewable Energy into the Grid as Needed

Energy Transition Large-Scale Battery Feeds Renewable Energy into the Grid as Needed

2025-06-27 Source: Fraunhofer Institute for Chemical Technology ICT | Translated by AI 1 min Reading Time

Europe's largest vanadium redox flow battery at the Fraunhofer ICT has successfully started research operations: In a controlled test, it was possible to successfully demonstrate for the first time how renewable energies can be fed into the power grid in a targeted manner, regardless of current weather conditions.

Europe's largest vanadium redox flow battery has started research operations at the Fraunhofer Institute for Chemical Technology with an important interim success.(Image: Fraunhofer ICT) — Europe's largest vanadium redox flow battery has started research operations at the Fraunhofer Institute for Chemical Technology with an important interim success.
(Image: Fraunhofer ICT)

The large-scale battery thus offers a concrete solution to a central problem of the energy transition: Surplus green electricity, which has often remained unused or even led to negative electricity prices when generation is high, can now be stored temporarily and called up when needed to serve the grid.

Wind energy and PV system on the Fraunhofer ICT campus.(Image: Fraunhofer ICT) — Wind energy and PV system on the Fraunhofer ICT campus.
(Image: Fraunhofer ICT)

"We have shown that renewable energy can be intelligently controlled with our storage platform. This is a decisive step towards a stable, flexible and resilient electricity system based on renewable sources," explains Adj. Assoc. Prof. (UNSW, UQ) Dr. Jens Noack, Team Manager Flow Batteries at Fraunhofer ICT.

Made in Germany

The modular vanadium redox flow battery was developed and built entirely with components and expertise from Germany. It serves as a research and development platform for testing and further developing new storage technologies and components together with industrial partners from Germany and around the world.

The project is also working with international universities to research storage strategies for grid applications, electricity trading and resilience solutions in the energy system of the future. The battery not only acts as a demonstrator, but also as a safety component to stabilize the grids and prevent power outages.

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