Mynydd Portref
Mynydd Portref is a 12 MW onshore wind farm in Wales, operated by RES Group. The UK government lists it as operational in its register of power stations (DUKES table 5.11, May 2025).
- Onshore
- Wales
Key facts
- Installed capacity
- 12 MW
- Status
- Operational
- Technology
- Wind Β· Onshore
- Operator
- RES Group
- Region
- Wales
- Country
- Wales
- Grid connection (DUKES)
- LV
- Combined heat & power
- No
- Postcode
- CF35 6NR
- Coordinates
- 51.5564, -3.4597
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 Mynydd Portref compares
At a typical UK load factor for this technology (about 26% of the maximum possible output), a 12 MW station would generate roughly 27 GWh of electricity in a year, similar to the annual use of about 10,120 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.
Wind farms turn the kinetic energy of the wind into electricity with turbines. Output varies with wind speed. Offshore sites usually see stronger, steadier winds than onshore sites and so generate more per MW of capacity.
All UK wind farms Wind farms in Wales All run by RES GroupNearby generating sites
- Taff Ely Β· 9 MW onshore wind farm2.1 km
- Pant y Wal Extension Β· 20 MW onshore wind farm5.5 km
- Pant y Wal Β· 52.5 MW onshore wind farm7.0 km
- Berthllwyd Β· 4.96 MW solar farm9.3 km
- Corntown Solar Β· 2.48 MW solar farm9.6 km
- Ferndale Wind Farm Β· 6.4 MW onshore wind farm10.5 km
- Maes Bach Β· 4.56 MW solar farm11.7 km
- Pen Rhiw Β· 4.75 MW solar farm14.0 km
Also operated by RES Group
RES Group operates 98 sites in the register. Largest first:
- Beinneun Wind Farm Β· onshore wind farm109 MW
- Cumberhead Wind Farm Β· onshore wind farm50 MW
- Hill of Towie Wind Farm (GB) Β· onshore wind farm48.3 MW
- Crossdykes Wind Farm Β· onshore wind farm48 MW
- Blary Hill Β· onshore wind farm35 MW
- Tormywheel Β· onshore wind farm30.8 MW
- Garreg Llwyd (GB) Β· onshore wind farm30.4 MW
- Solwaybank Β· onshore wind farm30.4 MW
Planning history
From the government's Renewable Energy Planning Database (REPD), matched to this site by location, capacity and name.
- Planning status
- Operational
- Site name in planning record
- Mynydd Portref Wind Farm extension
- Developer / operator
- REG Windpower
- Planning authority
- Rhondda Cynon Taf
- Planning reference
- 12/0704/10
- Application submitted
- 29 June 2012
- Permission granted
- 19 December 2014
- Construction started
- 11 April 2016
- Began operating
- 1 March 2017
- Capacity in planning record
- 12 MW
- Address
- Mid Glamorgan
- REPD reference
- 4194
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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