Maesgwyn Extension
Maesgwyn Extension is a 2.5 MW onshore wind farm in Wales, operated by Pennant Walters. 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
- 2.5 MW
- Status
- Operational
- Technology
- Wind Β· Onshore
- Operator
- Pennant Walters
- Region
- Wales
- Country
- Wales
- Grid connection (DUKES)
- HV
- Combined heat & power
- No
- Coordinates
- 51.7406, -3.6442
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 Maesgwyn Extension compares
At a typical UK load factor for this technology (about 26% of the maximum possible output), a 2.5 MW station would generate roughly 5.7 GWh of electricity in a year, similar to the annual use of about 2,110 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 Pennant WaltersNearby generating sites
- Ffynnon Oer Β· 32 MW onshore wind farm1.1 km
- Maesgwyn Β· 26 MW onshore wind farm1.1 km
- Maesgwyn Solar Β· 2.5 MW solar farm2.4 km
- Hendre Fawr Β· 11.6 MW solar farm4.8 km
- Pen Y Cymoedd Β· 228 MW onshore wind farm9.1 km
- Mynydd Bwllfa Β· 22.5 MW onshore wind farm9.4 km
- Llynfi Afan Renewable Energy Limited Β· 24 MW onshore wind farm10.1 km
- Maerdy Β· 24 MW onshore wind farm10.7 km
Also operated by Pennant Walters
Pennant Walters operates 6 sites in the register. Largest first:
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
- Maesgwyn Wind Farm - extension
- Developer / operator
- Pennant Walters (MAESX) Limited
- Planning authority
- Neath Port Talbot
- Planning reference
- P2014/0733
- Application submitted
- 15 August 2014
- Permission granted
- 17 December 2015
- Construction started
- 21 January 2016
- Began operating
- 29 March 2016
- Capacity in planning record
- 2.5 MW
- Address
- Maesgwyn Wind Farm Between Onllwyn & Glynneath, West Glamorgan
- REPD reference
- 4485
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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