Britain’s biggest battery project so far goes live in grid-balancing markets

LinkedIn
Twitter
Reddit
Facebook
Email
The 50MW / 75MWh Thurcroft site in

The UK’s biggest battery storage project so far has been acquired by London Stock Exchange-listed battery storage investor Gresham House Energy Storage Fund and is already participating in numerous grid services markets.

Gresham House said that it has completed its investment in the 50MW / 75MWh Thurcroft battery storage site in South Yorkshire, which is in northern England.

The asset has been acquired from Gresham House DevCo and Noriker Power, with Gresham House having acquired a 5% stake in the latter in 2019.

The Thurcroft asset was acquired from the two developers for a total enterprise value of £32.5 million (US$42.32 million), plus up to £0.75 million of deferred contingent consideration. It becomes Gresham House’s 11th operational utility-scale battery storage project, bringing the total portfolio to 265MW.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

It is expected that Gresham House’s completion of the acquisition of another asset, the 50MW Wickham battery storage site, is to occur shortly. John Leggate CBE, chair of Gresham House Energy Storage Fund, said: “Thurcroft is our largest battery project yet and we’re delighted that it’s now live. The dynamic fluctuations in power on the National Grid during lockdown, and the unassailable rise of wind and solar installations, have sharpened the focus on the need for fast-acting, flexible storage at scale.”

Prior to Thurcroft’s completion, the 49MW Red Scar asset was Gresham House’s largest, having completed its £32.8 million acquisition in January 2020.

Meanwhile, Flexitricity, a demand response and flexibility energy services provider, contacted Energy-Storage.news to say that the project is already generating revenue and at the same time helping electric system operator National Grid ESO to balance the UK grid.

Gresham House contracted Flexitricity to optimise the asset’s operation following successful work on a previous project.

It has already joined the Balancing Mechanism (BM), which balances demand and supply on the network in real-time and is becoming a common source of revenues for energy storage projects in the UK. Flexitricity’s control room monitors the Thurcroft asset round-the-clock and alters the battery system’s charge and discharge profile accordingly.

Thurcroft is also set to be used in the wholesale markets, as well as tender to provide frequency response ancillary services to the grid. According to Flexitricity, the battery project has already been able to secure “high value” daily contracts for participating in National Grid ESO’s Dynamic Containment market – the grid operator’s newest, much-talked about frequency regulation opportunity.

“Flexibility is a hugely important part of decarbonising the grid and batteries are an excellent source of flexibility. Investors are getting comfortable with the business case for energy storage and it’s great this year to be seeing a number of large batteries coming onto the system, providing more of the rapid response flexibility National Grid ESO needs to maintain system stability,” Andy Lowe, Flexitricity director, said.

“I’m glad to say we’re off to a great start and have been able to optimise revenue for the battery across a range of markets, including securing high prices in the first ever tender round of the newly launched Dynamic Containment service.”

Planning regulations which changed in Britain a while ago could change the landscape for the country’s big battery systems. Over 1GW of utility-scale battery capacity has been deployed already and a recent government ruling lifted certain restrictions and planning hurdles placed on battery projects of over 50MW.

Ben Guest, Gresham House managing director alluded to Great Britain needing “at least 10GW” of energy storage “in the next few years to enable the orderly transition to a renewables-led electricity market” and said that Gresham is targeting 350MW of operational assets by the end of this year.

“In turn, we aim to contribute meaningfully to the UK’s 2050 net zero ambitions, while achieving strong returns for our investors.”

Additional reporting for Energy-Storage.news by Andy Colthorpe.

The original version of this story appeared on Solar Power Portal.

25 August 2026
São Paulo, Brazil
ees South America, LATAM’s key event for batteries and energy storage systems, focuses on energy storage solutions suited to support and complement energy systems with increasing shares of renewable energy, while integrating prosumers and electric vehicles. The event is strongly rooted in the LATAM region and highlights the strategic relevance of sector coupling across electricity, heat and mobility. As part of it, “element1,” a dedicated special exhibition, spotlights the high potential of green hydrogen in Brazil. ees South America brings together investors, utilities, installers, manufacturers and project developers from all over the world.
25 August 2026
Sydney, Australia
Building on our successful global portfolio of energy storage network events including our successful Energy Storage Summit Australia, combined with the exponential buildout of large-scale energy storage, we are delighted to return for the inaugural Battery Asset Management Summit Australia in Sydney (25-26 August 2026). The Battery Asset Management Summit has been received worldwide with huge optimism and has quickly established itself as leading event series for connecting asset owners with optimisers, software providers, and many more.
1 September 2026
Dubai World Trade Centre, Dubai
From first specification to final financing, Middle East Energy is where the world’s energy industry comes to do business. Three days in Dubai to source electrical infrastructure, evaluate technology and move power projects forward.
1 September 2026
Dubai World Trade Centre, Dubai
Co-located with the extremely well renowned Middle East Energy Show, join us for the inaugural Energy Storage Middle East Summit in Dubai, April 2026, as we bring our world leading energy storage series to one of the world’s fastest-growing BESS markets. This landmark event will explore the Middle East’s trajectory to become the third largest storage market globally by 2026, with a special focus on the region’s ambitious renewable energy targets and BESS integration strategies.
8 September 2026
Barcelona, Spain
Battery & Energy Storage Tech Europe (BESTE) is Europe’s industrial scaling platform for stationary and industrial battery applications — not EVs. Taking place 8–9 September 2026 at Fira de Barcelona, BESTE brings together utilities, IPPs, energy-intensive industries, data centres, ports, rail, maritime, defence and aerospace OEMs — all deploying or integrating battery storage at scale. Over 100 companies already confirmed — including EDP Renewables, Acciona, Endesa, Naturgy, Neoen, Galp, Basquevolt and Veolia — alongside 40+ expert speakers and international institutional support from BEPA, BVES, LDES and Volta Foundation. Where Europe’s battery & ES ecosystem turns projects into reality.
9 September 2026
Schaumburg, Illinois
RE+ Midwest brings together clean energy businesses, utilities, professionals, and policymakers to explore the technologies, trends, and opportunities shaping the Midwest energy market. Following a successful 2025 event that welcomed more than 1,200 attendees and 90 exhibitors, RE+ Midwest continues to highlight the region’s growing role in advancing solar, energy storage, EV infrastructure, and grid modernization. From rustbelt to greenbelt, the Midwest is helping drive the future of clean energy forward.

Read Next

July 17, 2026
Battery energy storage systems (BESS) operating in California’s grid left approximately US$98 million on the table due to suboptimal bidding strategies, according to a new analysis from Gridmatic.
July 17, 2026
Zinc hybrid cathode battery and storage system maker Eos Energy Enterprises has announced a strategic partnership with the US Department of Defense (DoD) to “enhance the resilience of national defence infrastructure.”
Premium
July 17, 2026
BW ESS’ executive director Roberto Jimenez discusses the company’s recently-announced first Germany project, in Klostermansfeld, Saxony-Anhalt, which could be one of Europe’s largest when completed in 2028.
July 17, 2026
A subsidiary of Indian renewable energy equipment and component manufacturer Waaree Energies has opened a battery energy storage system (BESS) enclosure factory.
July 17, 2026
German solar and storage developer ib vogt has received state planning approval for the 120MW/480MWh Wagga North battery energy storage system (BESS) in New South Wales, Australia.