UK’s biggest solar-plus-storage project acquired by investment manager Quinbrook Partners

By Alice Grundy
LinkedIn
Twitter
Reddit
Facebook
Email
Quinbrook also acquired the Geminia large-scale solar-plus-storage project in Nevada, which includes 690MW of solar PV and 380MW of battery storage. Image: Primergy.

Investment manager Quinbrook Infrastructure Partners has acquired a 350MW solar-plus-storage site expected to be the largest single site PV install in the UK once completed.

The site – which has been renamed from Cleve Hill to Project Fortress – is to feature 150MW of battery storage with a two-hour duration, with this to provide critical support to improve security and reliability for the UK power grid, Quinbrook said.

Construction of the site is expected to start in H2 2022, having received consent from the UK energy secretary in May 2020. While most solar sites in the UK go through local planning, those above 50MW are considered Nationally Significant Infrastructure Projects (NSIP), and require national approval.

Project Fortress was the first ever solar project to be approved through the NSIP process, with Quinbrook claiming its size of 350MW is three times that of the UK’s next largest consented PV project. 

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

To read the full version of this story, visit PV Tech.

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

October 9, 2026
Another edition of our BESS Industry Buzz, taking a look at what’s got industry people talking in the corridors of social media. 
October 7, 2026
UK market’s shifting dynamics see listed fund Gore Street’s shareholders take key vote while CIP and BW ESS progress 4-hour duration battery storage assets at significant scale.
October 7, 2026
Having just begun construction on a 2.8GWh BESS in Belgium, Giga Storage has progressed its 1.4GWh project in Germany to the ready-to-build stage.
October 6, 2026
e-STORAGE has signed an agreement to supply and commission a 100MW/200MWh BESS for OX2’s Muswellbrook solar-plus-storage site in Australia.
October 6, 2026
Atmos Renewables has reached financial close on the 400MW/1,600MWh Teebar battery energy storage system (BESS) in Queensland, Australia.