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

July 24, 2026
Two weeks after announcing its acquisition of Harmony Energy, Swiss power firm Alpiq has unveiled its first large-scale battery project in its home country.
July 23, 2026
Spain has awarded €165 million to seven pumped hydro storage projects totalling around 2.1GW/21GWh, while Portugal has set a target of 1.4GW of new pumped hydro capacity by 2040.
July 22, 2026
With the Energy Storage Awards 2026 entry deadline less than two months away, we speak to four judges to hear what they are looking for from successful entrants.
July 21, 2026
Two big developments for India’s emerging long-duration energy storage (LDES) sector, with contracts awarded for pumped hydro energy storage (PHES) and the country’s first large-scale flow battery.
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.”