The Anonymous Widower

The Coire Glas Pumped Storage Scheme

The Coire Glas pumped storage scheme, which is being developed by SSE Renewables will be the first large scale pumped storage scheme to be developed in the UK for more than 30 years.

  • It would have a power output of 1.5 GW.
  • Compared to Dinorwig (Electric Mountain) in Wales at 9.1 GWh and Cruachan in Scotland at 7.1 GWh, it will be a giant.
  • Planning permission has been obtained.

The Coire Glas project has a web site.

This is the introductory paragraph.

Coire Glas is a hydro pumped storage scheme with a potential capacity of up to 1500MW. Coire Glas is an excellent pumped storage site with a large lower reservoir (Loch Lochy) and a significant elevation of more than 500m between the lower and the new upper reservoir site over a relatively short distance.

There is also an explanatory video.

This map was clipped from this SSE planning document.

Note.

  1. Loch Lochy in the Great Glen will be the lower reservoir.
  2. Loch Lochy is a freshwater loch, that is up to seventy metres deep.
  3. The top reservoir is formed by building a dam across the stream, that runs into the Northern end of Loch Lochy.
  4. The green line leading from the pentagon in the lake behind the dam towards Loch Lochy is the headrace tunnel.
  5. It leads to the brown rectangle, which is the underground power station.
  6. The blue line leading from the power station, where water is discharged into the loch.
  7. The two orange lines are access tunnels.
  8. The yellow line is the emergency access tunnel.

It is a standard layout for a pumped storage power station.

  • To store electricity, water is pumped from Loch Lochy and stored in the new lake.
  • To generate electricity, water runs down the headrace tunnel, through the turbines and then down the tailrace into Loch Lochy.
  • The power station would have a number of pump/turbines, that can do both tasks.

In addition, any water from rain or snow melt, that runs into the top lake gives low-cost extra electricity.

This layout of the dam and the upper lake was clipped from this SSE planning document.


It would be an impressive structure.

Could this pumped storage scheme give the UK energy security?

February 26, 2022 - Posted by | Energy, Energy Storage | , , , , , , ,

1 Comment »

  1. […] I discuss this scheme in The Coire Glas Pumped Storage Scheme. […]

    Pingback by Power Storage Is The Next Big Net Zero Challenge « The Anonymous Widower | February 26, 2022 | Reply


Leave a Reply

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

WordPress.com Logo

You are commenting using your WordPress.com 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: