BW ESS has put its 350MW/1,240MWh Hams Hall BESS project in the UK into operation, the largest in Europe.

Another edition of our BESS Industry Buzz, taking a look at what’s got industry people talking in the corridors of social media. 

UK energy industry regulator Ofgem said it is minded to approve the introduction of a financial commitment for BESS in an attempt to reduce the oversupply of the projects awaiting a grid connection.

What led Field to submitting, and winning, 16- to 18-hour BESS projects in the UK’s long-duration energy storage (LDES) cap-and-floor scheme, and what are the next steps? We hear from the firm’s technical director.

After a quiet period, M&A in the UK’s large-scale BESS market has picked up with transactions from CIP, Fidra Energy, Elements Green, Gresham House and Eelpower in the past fortnight.

Managers of the UK’s largest BESS owner-operator Gresham House Energy Storage Fund (GRID) discussed recent investment news and future strategy this week. 

BESS fund manager Gore Street Capital’s director of asset management Daniel Sherlock-Burke recently discussed the work it is doing around capturing and making use of its huge quantities of operational data.

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.

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.

The UK grid-scale battery storage market grew 45% in 2025, with 4GWh coming online during the year, bringing total operational capacity to 12.9GWh.