Lithium-ion companies have come out as the top-rated suppliers on a new long-duration energy storage (LDES) leaderboard, while CO2 Battery company Energy Dome is the highest non-lithium company.

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.

PV inverter and BESS firm Sungrow has launched its PowerTitan 3.0 battery energy storage model for the European market.

European Union countries deployed record-breaking battery storage capacity for the 12th consecutive year in 2025.

Leading BESS owner-operators across Europe discuss the key trends around the financing and deployment of grid-scale projects, with the segment now the driver of continent-wide deployments according to trade body SolarPower Europe.

Bigger, longer-duration projects and more sophisticated deal structuring are driving the energy storage industry forward, but a lack of common approaches from transmission system operators (TSOs) remains a challenge.

Lenders requirements for contracted revenues for BESS projects in the UK appears to have softened, an executive at investment firm Triple Point said.

More BESS news from across Europe, with ContourGlobal and Alpiq striking sizeable deals in Greece and France, Iberdrola putting projects into operation in Spain, and other project news in Germany, Poland, Denmark and Southeast Europe.

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. 

Fortescue’s battery intelligence platform has acquired analytics provider Zitara, and Drax has agreed to acquire optimiser Flexitricity.

Gore Street Capital has completed a first close for its GS EU Fund SCSp, which will target battery storage investments mainly in the European Union.

The costs of certain long-duration energy storage (LDES) technologies are expected to decline by around 37% on average by 2030, according to a new study.

The UK market saw strong interest and activity in 2025 but now appears to be shifting from a development market to one focused on execution, writes Solar Media analyst Charlotte Gisbourne.

Another roundup of European grid-scale BESS project news, led by MORE and Zenobe putting Greece and UK projects into operation, and major project financings/construction starts by Acacia in France, Greenvolt in Hungary and Eco Stor in Germany.

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.

While the UK grid-scale BESS market continues to be among the busiest in Europe, there are still huge questions and plenty work to be done in several key policy areas.

Virtual BESS tolling platform startup Terralayr has raised €192 million (US$223 million), primarily for its own build-own-operate BESS pipeline. CEO Philipp Man spoke to Energy-Storage.news about the funding round and growing its capacity virtualisation and tolling platform.

Fluence senior VP and chief enterprise operations officer Roman Loosen explains how 2025 saw energy storage go from "important" to "essential."

We hear from IPP Zelestra about its decision not to proceed in Italy's MACSE auction and the auction's wider implications on demand for private tolls.