Quinbrook to build 460MWh BESS at former coal plant site in Wales, UK

LinkedIn
Twitter
Reddit
Facebook
Email

Investor Quinbrook Infrastructure Partners has acquired exclusive project development rights for a 230MW/460MWh battery energy storage system (BESS) in Wales, UK.

The BESS will be located at the site of the former Uskmouth coal fired power station in south Wales, which closed in 2015, and will utilise existing power transmission infrastructure including its 230MW grid connection. The development includes a modification of the grid connection agreement and a planning application to be determined by the local Newport City council.

The project development rights were acquired from Simec Atlantis Energy and the BESS is expected to come online towards the end of 2024. Quinbrook has partnered with storage optimiser Energy Optimisation Solutions (EOS) in the origination and development of the project.

Quinbrook and EOS are jointly undertaking the design and development phases of Project Uskmouth with Quinbrook affiliate Private Energy Partners leading equipment procurement, construction and operational management.

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

Habitat Energy, a battery storage optimiser which was acquired by Quinbrook late last year, will be engaged to optimise the Uskmouth assets when operational.

Quinbrook’s policy is to prioritise the use of local contractors and specialists during construction works and, where possible, the project will utilise the existing railway access for logistical requirements in order to minimise local impacts from construction activities.

Rory Quinlan, co-founder and managing partner of Quinbrook, said: “If the UK power system is to meet its 2030 renewables targets (of 95% decarbonised power generation), battery storage will need to increase significantly to address urgent stability and flexibility requirements.”

“Almost 10% of UK grid capacity is expected to be provided by battery storage by 2030, representing an estimated £20 billion (US$24.5 billion) of new capital investment. Project Uskmouth is a timely example of how specialist energy infrastructure investors like Quinbrook can identify new opportunities of substantial scale and positive impact arising from the energy transition.”

The project’s two-hour duration is indicative of a wider trend in the UK BESS market to move past one-hour systems, driven primarily by a shift to merchant, wholesale energy trading revenues and away from solely providing grid frequency response services.

Recent examples, covered by Energy-Storage.news’ sister site Solar Power Portal include TagEnergy and Harmony Energy’s Chapel Farm BESS and Amp Energy’s 400MW/800MWh Scottish Green Battery Complex.

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.
15 September 2026
San Diego, USA
You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.
13 October 2026
London, UK
Now in its second edition, the Summit provides a dedicated platform for UK & Ireland’s BESS community to share practical insights on performance, degradation, safety, market design and optimisation strategies. As storage deployment accelerates towards 2030 targets, attendees gain the tools needed to enhance returns and operate resilient, efficient assets.

Read Next

August 13, 2026
NextEnergy UK has acquired a 107MW/151MWh portfolio of standalone battery energy storage system (BESS) projects in the UK.
August 13, 2026
ESS Tech Inc highlighted the potential of its recent partnership with Alsym Energy and the advancement of its sodium-ion technology in its recent financial report.
August 13, 2026
Renewable energy developer-operator Arevon Energy has put its 300MW/1,200MWh Nighthawk Energy Storage Project in Poway, California, US into operation.
August 13, 2026
Denmark-headquartered investor Copenhagen Infrastructure Partners (CIP) has brought its 500MW, 2-hour duration Coalburn 1 battery energy storage system (BESS) into commercial operation.
August 12, 2026
Ahead of the Battery Asset Management Summit Australia 2026, we take a look at some of the key debates set to take centre stage at the event.