BW ESS and Penso Power’s 330MWh Bramley BESS project in UK online

By Kit Million Ross, Cameron Murray
LinkedIn
Twitter
Reddit
Facebook
Email

Commercial operation has started on the 100MW/331MWh Bramley battery energy storage system (BESS), a project in the UK deployed by owner-operator BW ESS, developer Penso Power and BESS provider Sungrow.

“This is a landmark moment for BW ESS’ UK rollout and a notable project in the context of the UK’s energy transition,” said Erik Strømsø, CEO of BW ESS, a speaker at this week’s Energy Storage Summit EU 2025 in London.

The 3.3-hour duration project uses Sungrow’s Power Titan 2.0 AC block solution and is the largest online in the UK, and most likely the largest in Europe. It is connected to the grid via a loop-in and loop-out Extra High Voltage (EHV) solution, Sungrow said.

It is also notable as having one of the longest-term tolling agreements for a large-scale BESS in the UK at seven years, with oil and gas major Shell, as well as being one of the earliest such deals signed in the country’s energy storage market.

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

Not ready to commit yet?
  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Roberto Jimenez, BW ESS executive director, discussed that deal and the wider picture for battery storage offtake contracting in an interview with ESN Premium in August last year shortly after its announcement.

Some 17GWh of BESS is due to connect to the UK grid this year, our colleagues at Solar Media Market Research wrote in a guest blog yesterday.

See additional coverage of the Bramley project on Solar Power Portal.

Read Next

Premium
September 3, 2025
The UK had one of its best months of the year for large-scale BESS projects being completed in August.
September 2, 2025
The sale of the UK BESS-holding Harmony Energy Income Trust (HEIT) proved private capital’s greater patience and valuation around the asset class, the CEO of its former investment advisor told Energy-Storage.news.
Premium
August 27, 2025
We catch up with the CEO of BESS developer Harmony Energy about its strategy and plans going forward, following the sale of its affiliated Harmony Energy Income Trust (HEIT).
August 21, 2025
Statera Energy has begun operating the biggest BESS project in the UK, connected to a National Grid substation that formerly supported two coal power plants.
Premium
August 20, 2025
Long-term BESS offtake and PPA deals are clearly on the rise in Europe, but how are they evolving vi-a-vis structures, tenors and regional differences?

Most Popular

Email Newsletter