Sungrow announced on November 4, 2026, that it had commissioned the first phase of the Hams Hall battery energy storage system in the West Midlands, UK, in partnership with energy storage owner-operator BW ESS. The 350 MW / 1,243 MWh project moved from grid connection to commercial operation in 20 days.
Sungrow Commissions 1,243 MWh Hams Hall BESS in 20 Days
Hams Hall moved from grid connection to commercial operation in 20 days, adding large-scale storage for renewable integration and UK grid resilience.
Neutral rows compare operational and planned capacity—not year-on-year change; the headline achievement is commissioning in 20 days.
According to Sungrow, Hams Hall is expected to be Europe’s largest operational battery energy storage system. The project uses Sungrow’s PowerTitan 2.0 energy storage technology and is located next to National Grid’s Hams Hall substation.
The system is intended to balance electricity supply and demand, support the integration of renewable generation into the UK electricity system, and strengthen grid resilience. Sungrow said close collaboration between its engineering teams and BW ESS enabled the companies to identify and resolve technical challenges during hot commissioning and delivery.
A planned second phase is expected to increase the project’s total capacity to 400 MW / 1,424 MWh. At full capacity, BW ESS estimates that the system will be capable of supporting the electricity needs of approximately 1.3 million homes for up to 3.5 hours.
Hams Hall builds on an existing collaboration between Sungrow and BW ESS in the UK, including the Bramley battery energy storage project in Hampshire. Sungrow provided its energy storage technology, engineering capabilities, and on-site technical support for the Hams Hall commissioning process.
The project adds utility-scale storage capacity to the UK electricity system as renewable generation increases. Large battery systems can store electricity when supply exceeds demand and discharge it when required, helping grid operators manage fluctuations in generation and consumption.
Source: prnewswire.com
