SSE Renewables plans 18GW/37GWh pumped hydro energy storage project in Scotland, UK

LinkedIn
Twitter
Reddit
Facebook
Email

SSE Renewables has revealed plans to progress a 1.8GW pumped hydro energy storage (PHES) project at Loch Fearna, Scotland, UK, with a consortium led by Gilkes Energy.

The Fearna PHES project envisages developing tunnels and a new power station to connect SSE Renewables’ existing reservoir at Loch Quoich with an upper reservoir at Loch Fearna.

SSE Renewables, which is the renewable energy development arm of Scotland-headquartered multinational energy company SSE, announced its plans earlier this week (22 July).

If pursued, the project could produce around 37GWh of stored energy capacity, thus providing additional stability and flexibility to the GB grid. It would export energy for 20 hours at 1.8GW. A grid connection offer totalling 1.795GW has already been secured.

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

SSE confirmed the project could reach commercial operations in the mid-2030s, subject to reaching a final investment decision.

Gilkes Energy said the Fearna PHES project will complement the existing conventional hydro projects in the area and “represents the next chapter in Scotland’s rich hydropower heritage”.

Under the terms of the joint venture, Gilkes Energy will lead the project’s development under a development services agreement with SSE Renewables, leveraging the company’s experience in developing PHES projects in Scotland.

“The proposed Fearna project is a welcome addition to our development pipeline of pumped storage hydro projects, which also includes our proposal to develop what could be one of Britain’s biggest pumped storage schemes in 40-years at Coire Glas and our intention to convert our existing Sloy Power Station into a PHES facility,” Ross Turbet, head of investment management for hydro at SSE Renewables, said.

To read the full version of this story, visit Current.

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

May 21, 2026
The UK’s NESO has cleared 150GW of BESS from its grid connection queues, according to figures from BloombergNEF.
May 20, 2026
Australia’s New South Wales (NSW) has opened two tenders seeking 2.5GW of renewable energy generation and 12GWh of long-duration energy storage, marking the largest generation procurement in the state’s history under its Electricity Infrastructure Roadmap.
May 18, 2026
Two battery energy storage system (BESS) companies, Eos Energy and ESS Tech Inc, are betting big on the US adoption of long-duration energy storage (LDES) in Q1 2026 financial reports.
Premium
May 12, 2026
In this interview with ESN Premium, Keith Lovegrove of ITP Thermal warns that Australia’s energy storage sector risks over-reliance on lithium-ion batteries.
Premium
May 7, 2026
What are the system needs that LDES is going to solve, and what technologies are most appropriate for those applications?