The Anonymous Widower

How Much Pumped Storage Hydro Will Be Operational In The UK By 2030?

Pumped Storage Hydro is the Bank of England-standard for energy storage.

I asked Google AI, the question in the title of this post and received this answer.

The UK currently has approximately 3 GW (roughly 26-28 GWh) of operational pumped storage hydro (PSH) capacity. By 2030, this capacity is expected to increase, driven by new projects in the pipeline that aim to meet a government goal of up to 8 GW of long-duration energy storage by that year.

Key Projects Expected Online by 2030-2031:

Coire Glas (SSE): A major project in Scotland with a planned capacity of 1.3 GW / 30 GWh, expected to be operational around 2030–31.

Cruachan Expansion (Drax): A 600MW plant in Scotland that has received approval, with construction expected to contribute to the 2030 goal.

Glenmuckloch: Projected to be operational by 2029. In 

Other Developments:

Total Pipeline: Developers have identified up to 10 GW of potential projects in the Scottish Highlands and Wales, though not all will be operational by 2030.

Future Growth: The total installed capacity of PSH is expected to grow significantly, with one projection suggesting a rise from 26.7 GWh currently to over 122 GWh by 2034.

To support these projects, the UK government has confirmed a “cap and floor” investment framework to stimulate development of long-duration energy storage (LDES).

For a relatively small island we do seem to be an ideal place to develop pumped storage hydro!

The Coire Glas Pumped Storage Scheme

In The Coire Glas Pumped Storage Scheme, I give more details of this scheme.

The Glenmuckloch Pumped Storage Scheme

In The Glenmuckloch Pumped Storage Scheme, I give more details of this scheme, which is based on a disused open cast coal mine.

Addition Of Pumped Storage Hydro By 2030

This looks to be around 5 GW, but it is just a foretaste of the shape of things to come!

February 28, 2026 - Posted by | Artificial Intelligence, Energy, Energy Storage | , , , , , , , , , , , , , ,

1 Comment »

  1. […] Storage Hydro: In How Much Pumped Storage Hydro Will Be Operational In The UK By 2030?, I estimate that the Bank of England standard of energy storage, will add 5 GW of electricity […]

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