The Anonymous Widower

Corrievarkie Pumped Storage Hydro Project

When I wrote ILI Group To Develop 1.5GW Pumped Storage Hydro Project, I noticed that they were also developing a scheme called Corrievarkie at Loch Ericht.

This document on the Highland Council web site gives details of the planning application.

This is said.

Corrievarkie Pumped Storage Hydro Scheme – Construction and Operation of a Pumped Storage Hydro Scheme with generation capacity of approximately 600MW and storage capacity of 14.5 GWh comprising headpond reservoir, surge shaft, tailpond, headrace, tailrace, power cavern, temporary access tracks for construction, permanent access tracks, 12 construction compounds, temporary worked accommodation, switching station, loch based structures and ancillary infrastructure.


  1. With storage of 14.5 GWh, it is bigger than Electric Mountain, which has only 9.1 GWh of storage.
  2. But with a generation capacity of 600 MW, this is only a third of that of Electric Mountain.

This Google Map shows the area, where the scheme will be realised.

The red arrow indicates Corrievarkie Lodge.

I shall be interested to see the full details of this scheme.



February 10, 2022 - Posted by | Energy, Energy Storage | , ,


  1. At the moment long run storage is better than high power low time storage. Dinorwic performs that task very admirably and for nigh on 40 years. A foresight investment by the CEGB actually pretty much everything they did was well thought out and without them Thatcher would have never got the better of the miners. Privatisation may have driven some costs out but as usual it goes too far with a regulator always in reactive mode. Electricity is a basic nation state essential and really needs to be at least planned and managed by a state run operator even if elements are outsourced like generation.

    Comment by Nicholas Lewis | February 10, 2022 | Reply

    • I do wonder if in the days of the CEGB, it was easier to build power stations. When I left University in 1968, as a qualified Electrical and Control Engineer, I could have gone to work at AEI, English Electric, GEC and Parsons, all of whom made turbo generators. But Weinstock at GEC, bought up most of the electrical engineering industry and ruined it. I do wonder, if the CEGB had to use one supplier, which with Weinstock owning it would not have been to their advantage.

      Narional Grid do seem to be planning properly and investing in equipment we need.

      Comment by AnonW | February 10, 2022 | Reply

      • Its difficult one that as those companies had many good years whilst electrical supply was expanding across the globe well the empire but like any new industry once the market was satisfied the companies were going to be out of work and need consolidation. Its not the first industry this happened to at it won’t be the last. The fundamental issue is the politicians permitted the sale of core industries from this country the French didn’t and still don’t.

        Comment by Nicholas Lewis | February 10, 2022

  2. Like you I’ll be interested to see details, unfortunately from looking at the planning process these things take time. The initial application for Coire Glas started out in 2012 and although Red John has moved much more quickly, starting out in 2017 with the one page Screening and Scoping document to the Highlands Council, it wasn’t until over a year later that the scheme was formally outlined with the Scottish Government who have to oversee projects exceeding 50MW under what’s known as a Section 36 process in line with the Electricity Act Scotland 1989.

    Comment by fammorris | February 10, 2022 | Reply

  3. As ILI Group have three schemes under development, I would expect that doing the smallest first is surely a good thing, as it trains all your engineers for bigger projects to come.

    It might also flush out some smaller schemes in South Wales or even in England.

    Comment by AnonW | February 10, 2022 | Reply

    • Comment by fammorris | February 10, 2022 | Reply

  4. It’s not just the French

    Comment by fammorris | February 11, 2022 | Reply

    2018 –
    Red John 450MW/6.2Hrs/2.8GWh, (Loch Duntelchaig/Loch Ness)
    Fin Glen 600MW/8.8Hrs/5.3GWh, (Finglen Burn/Ardeonaig/Loch Tay)
    Balliemeanoch 520MW/8Hrs/4.2GWh (Loch Awe)

    2021 –
    Corrievarkie 600MW/24Hrs/14.5GWh, (Loch Ericht)
    Balliemeanoch 800MW/?Hrs/?GWh,

    2022 –
    Balliemeanoch 1.5GW/30Hrs/45GWh

    Will Mark Wilson admit to supersizing ILI’s old plan for Balliemeanoch PSH or what?

    Will Mark Wilson admit to supersizing ILI’s old plan for Balliemeanoch PSH or what?

    Comment by Scottish Scientist | February 11, 2022 | Reply

  6. […] Corrievarkie – 600 MW/14.5 GWh […]

    Pingback by A Brief History Of Scottish Hydropower « The Anonymous Widower | February 14, 2022 | Reply

  7. […] Corrievarkie Pumped Storage Hydro Project, I analyse the […]

    Pingback by Scotland’s Energy Storage « The Anonymous Widower | March 2, 2022 | Reply

  8. […] Corrievarkie – 14.5 GWh […]

    Pingback by Will Coire Glas Start A Pumped Storage Boom In Scotland? « The Anonymous Widower | June 3, 2022 | Reply

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.

%d bloggers like this: