A Battolyser is a combination of a battery and a hydrogen generator (electrolyser) in one device. As a result, the system contains the functionality of both an electrolyser and a battery. As soon as the system's battery functionality is charged, the Battolyser can use the excess electricity to split water into hydrogen and oxygen. The hydrogen can be used for industrial applications, for instance, to reduce greenhouse gas emissions. If there are shortages on the grid, a Battolyser can also deliver the stored electricity back to the grid. This makes the produced hydrogen greener and at the same time cheaper. The setup at RWE will be used to simulate long-term volatile price scenarios. When electricity prices remain low, the Battolyser will continue to charge and produce hydrogen. However when prices rise, the Battolyser will immediately stop producing hydrogen and sell the stored electricity.

"It is a logical choice for us to invest with our consortium partners in the first industrial-scale Battolyser system. We are increasingly investing in renewable energy sources and see hydrogen as an essential link to the energy transition," says Marinus Tabak, Head of Central Asset Management at RWE. "The technology of the Battolyser system enables a sustainable and more efficient energy system. This way we can reduce the dependency on fossil fuels and accelerate the transition to a more sustainable and efficient energy supply."

Mattijs Slee, CEO at Battolyser Systems: "RWE is an important partner for us. Thanks to the installation, we prove in real-life that the unique functionalities of the Battolyser system are safe and can be implemented on an industrial scale."