Quinbrook developing 230MW/460MWh UK BESS at former coal plant site

LinkedIn
Twitter
Reddit
Facebook
Email

Simec Atlantis Energy (SAE) has signed a contract with Energy Optimisation Solutions and Quinbrook Infrastructure Partners via the two’s portfolio company Uskmouth Energy Storage (UES) to deliver a new 460MWh UK battery energy storage system (BESS).

The 230MW/460MWh BESS is to be developed at former coal generation site Uskmouth, with SAE claiming it to be one of the UK’s largest BESS projects.

Other large-scale BESS in the UK include Amp Energy’s two 400MW / 800MWh assets in Scotland, as well as a 360MW Sembcorp Energy UK BESS.

The Uskmouth BESS is expected to become operational towards the end of 2024, with construction expected to take 18 months – however the development is still subject to planning approval. It will also require a modification of the grid connection agreement, with SAE having submitted the modification application to National Grid.

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

This requests that the Uskmouth site’s connection agreement be varied to accommodate a BESS facility. This can delay a grid connection application as Energy-Storage.news recently reported.

UES will own and operate the project, which will deliver roughly £40 million in revenue to SAE over 30 years, of which £11 million will be paid within the next 18 months, subject to the achievement of certain milestones.

The BESS – which SAE said represents an anchoring project in the development of the Uskmouth site into a Sustainable Energy Park – is to “play a key role” in the UK’s energy transition and the integration of more renewable power into the electricity system.

Meanwhile, investment manager Quinbrook is also developing the Gemini solar and battery storage project in Nevada, US, which consists of 690MW of solar PV and 380MW of battery storage, through its subsidiary Primergy.

It also acquired the 350MW Cleve Hill solar-plus-storage site in Kent, UK, last year, renaming it Project Fortress. This project is one of the largest solar projects in the UK, with others of a similar scale including the 350MW Mallard Pass solar farm being developed by Windel Energy and Canadian Solar and a 500MW project being developed by Low Carbon – among others.

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

Premium
May 22, 2026
The situation and uncertainty around grid connections and grid fees in Germany is evolving, possibly enabling market participants to look beyond the August 2029 grid fee exemption cut-off date – although uncertainty is still very high.
May 21, 2026
The UK’s NESO has cleared 150GW of BESS from its grid connection queues, according to figures from BloombergNEF.
May 21, 2026
Singapore-based Equis has launched GreenPoint Energy, a wholly owned subsidiary consolidating its Australian renewable energy and battery storage operations under a dedicated platform with a 2.5GW portfolio of 12 battery energy storage systems (BESS) and wind projects across every National Energy Market (NEM)-connected state.
May 19, 2026
Lenders are increasingly willing to back large-scale BESS projects in Germany that don’t have any contracted revenues, although that merchant risk is priced in to structures, an executive at Aquila Clean Energy EMEA said.
May 19, 2026
Yarra Energy Foundation (YEF), a not-for-profit organisation, has commissioned a community battery storage system and two wheelchair-accessible electric vehicle (EV) charging bays in Clifton Hill, an inner-city suburb of Melbourne, Australia.