Maentwrog
Maentwrog is a 35.3 MW hydroelectric station in Wales, operated by Babcock International and Fluor Inc. The UK government lists it as operational in its register of power stations (DUKES table 5.11, May 2025).
- Large Hydro
- Wales
Key facts
- Installed capacity
- 35.3 MW
- Status
- Operational
- Technology
- Hydro Β· Large Hydro
- Operator
- Babcock International and Fluor Inc
- Region
- Wales
- Country
- Wales
- Grid connection (DUKES)
- HV
- Combined heat & power
- No
- Postcode
- LL41 4HY
- Coordinates
- 52.9212, -3.9753
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 Maentwrog compares
At a typical UK load factor for this technology (about 35% of the maximum possible output), a 35.3 MW station would generate roughly 108 GWh of electricity in a year, similar to the annual use of about 40,090 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 Babcock International and Fluor IncNearby generating sites
- Trawsfynydd Nuclear Power Station Β· 390 MW nuclear power station1.9 km
- Ffestiniog Power Station Β· 360 MW pumped-storage station6.6 km
- Croesor Β· 0.51 MW small hydro scheme8.5 km
- Garnedd Β· 0.56 MW small hydro scheme15.4 km
- Dinorwig Power Station Β· 1,800 MW pumped-storage station23.5 km
- Bryn Bachau Β· 4.57 MW solar farm24.1 km
- Cwm Dyli Β· 9.9 MW hydroelectric station24.5 km
- Gelli Gron Β· 3.6 MW solar farm25.5 km
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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