Wire · technology
BW ESS announces commercial operations of Hams Hall Battery Energy Storage System
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Fusion42 · 2 November 2026 · Fusion42 review
BW ESS has started commercial operations for the first phase of the Hams Hall battery energy storage system, delivering 350 MW / 1,243 MWh capacity, the largest in Europe by storage capacity. The project supports the UK’s energy transition by balancing demand and renewable supply, with full capacity set to reach 400 MW / 1,424 MWh and powering around 1.3 million homes for 3.5 hours.
This Wire brief sits within Fusion42's coverage of Climate Tech, and 3 sources have reported it between 22 Oct 2026 and 2 Nov 2026.
◆ ◆ The Wire takeaway
Battery storage capacity in the UK just scaled up massively with Hams Hall now fully operational. If you work on grid flexibility or renewable integration, new contracts and partnerships are opening as large scale storage stays vital to the energy system.
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3 sources · first reported 22 Oct 2026 · latest 2 Nov 2026
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