Large hydro hydro schemes and pumped-storage stations in Wales
Every hydroelectric scheme and pumped-storage station in the UK government's register of power stations, from small run-of-river schemes to Cruachan and Dinorwig. Each site page merges the government's operating record with its planning history where the two match.
Matching sites7
Capacity132 MW
Small hydro73110 MW
Large hydro521,356 MW
Planning, consented, under-construction and stopped projects open in the project pipeline.
Largest matching sites by capacity
Capacity by nation click to filter
Map: large hydro hydro schemes and pumped-storage stations in Wales
7 sites mapped
Small hydroLarge hydroPumped storage Circle size shows capacity. The filters below narrow the map and the list together.
| Site | Capacity | Stage |
|---|---|---|
| Maentwrog | 35.3 MW | |
| Rheidol Hydro Scheme Gen 2 | 20.5 MW | |
| Rheidol Hydro Scheme Gen 3 | 20.5 MW | |
| High Head | 17 MW | |
| Low Head | 15 MW | |
| Rheidol Hydro Scheme Gen 1 | 13.5 MW | |
| Cwm Dyli | 9.9 MW |
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This list covers sites in operation. Proposals, consented schemes and sites under construction are in the project pipeline. For how the technology works, see the guide.
Source: Department for Energy Security and Net Zero, Digest of UK Energy Statistics (DUKES) table 5.11, and the Renewable Energy Planning Database. Capacities are installed capacity, not live output.