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HYDRO Β· OPERATIONAL

Rheidol Hydro Scheme Gen 3

Rheidol Hydro Scheme Gen 3 is a 20.5 MW hydroelectric station in Wales, operated by Statkraft. The UK government lists it as operational in its register of power stations (DUKES table 5.11, May 2025).

  • Large Hydro
  • Wales
Project stageOperating
  1. Planning (completed)
  2. Consented (completed)
  3. Construction (completed)
  4. Operating (current stage)
  5. Closed (not yet reached)

Key facts

Installed capacity
20.5 MW
Status
Operational
Technology
Hydro Β· Large Hydro
Operator
Statkraft
Region
Wales
Country
Wales
Grid connection (DUKES)
LV
Combined heat & power
No
Coordinates
52.4348, -3.8447

Location

Map position from the published coordinates. For small sites this can be an approximate point rather than the exact boundary. Map Β© OpenStreetMap contributors.

How Rheidol Hydro Scheme Gen 3 compares

18th of 125largest hydro schemes in the UK register
2nd of 14in Wales
1.4%of listed UK hydro schemes capacity
β‰ˆ 63 GWhillustrative output a year

At a typical UK load factor for this technology (about 35% of the maximum possible output), a 20.5 MW station would generate roughly 63 GWh of electricity in a year, similar to the annual use of about 23,280 homes at 2,700 kWh each. This is an illustrative estimate, not the station's metered output: real generation varies with weather, availability and grid constraints.

Hydroelectric stations generate electricity from water flowing downhill through turbines, either from a reservoir behind a dam or from a river (run-of-river). Most UK hydro capacity is in Scotland and Wales.

All UK hydro schemes and pumped-storage stations Hydro schemes and pumped-storage stations in Wales All run by Statkraft

Source

Department for Energy Security and Net Zero (DESNZ), Digest of UK Energy Statistics (DUKES), table 5.11: power stations in the United Kingdom β€” operational at end of May 2025. Capacity is installed capacity as published, not current output. Status reflects the source date, not live operation.
View the original source
Last checked by Octary: 15 July 2026

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