A busy week of grid-scale BESS project news from Germany, with numerous development, project, optimisation and tolling partnerships announced.

Sam Markham of Fluence Australia believes grid-forming BESS are essential to deliver a safe, secure and affordable decarbonised power system.

Power firm RWE is about to start building a 400MW/800MWh BESS project in Germany, among the largest in the country to reach the construction stage. In related news, Kyon Energy has connected a 282MWh project to the grid, possibly the largest in the country to reach that milestone.

Germany’s four transmission system operators (TSOs) have begun procuring inertia services to help stabilise the electric grid as shares of renewable energy grow.

The global energy storage market is poised for continued expansion in 2026, even as supply chain constraints, regulatory evolution, and emerging applications reshape the landscape, according to Wood Mackenzie. 

Luke Witmer, VP of software engineering at Wärtsilä Energy Storage, explains why 2025 was an “awkward” year, but one that saw the industry grow taller than ever.

Duke Energy, Elevate Renewables, and Fluence Energy, along with BrightNight and Cordelio Power, are advancing BESS projects across the BESS.

IPP Neoen will provide Réseau de Transport d’Electricité (RTE) with grid-forming function from a BESS project in Brittany, France.

It’s been a bumper year for sponsored webinars here at Energy-Storage.news, and here is a selection to round out 2025.

As we welcome the end of another year and greet the next, here are the top 10 most-read news stories from 2025.