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.

Engie has acquired a 30% equity stake in the Hazelwood battery energy storage system (BESS) in Victoria, Australia.

BESS Large-Scale Fire Testing (LSFT) has been adopted as part of best practice thinking on safety validation, with at least a dozen companies announcing tests and results and many more expected going forward. It becomes mandatory in the 2026 edition of NFPA 855.

Amazon has been approved as the buyer of the 1.2GW Sunstone solar project in Oregon, one of the largest solar PV projects in the US.

Virginia’s recently proposed legislation to significantly increase energy storage requirements coincides with unprecedented electricity demand growth in the state, largely driven by data centres.

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.

Sahand Karimi and Henry Swisher of OptiGrid examine the two primary metrics used to evaluate the performance of battery storage trading: normalised revenue and percentage of perfect capture rate.