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.

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

Another busy week of large-scale BESS project news across Europe, led by CountourGlobal putting a 202MW/505MWh BESS into commercial operation in Bulgaria.