Power plant · Powys, Wales, United Kingdom
Hirddywel
Hirddywel is a planned power plant in Powys, Wales, United Kingdom, with 27 MW of capacity, operated by Vattenfall.
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | Powys (coordinates), Wales | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Address | 6.5km to south east of Llanidloes, Powys | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Status | Planned (planning application submitted) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Onshore or offshore | Onshore | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Application date | 25 Jun 2010 (reference P/2010/0650, planning authority Powys) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Operator | Vattenfall | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Capacity | 27 MW | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Units | 9 units (3 MW per unit) | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Technology | Wind Onshore | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Coordinates | 52.4146, -3.4506 | DESNZ Renewable Energy Planning Database (REPD) · Open Government Licence v3.0 · checked 24 Oct 2026 |
Research on this power plant and its operator.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the operator.
Request researchLatest events
Dated events about this power plant from official notices and registers, newest first. All recent changes.
- Permit applied for (planning authority Powys, reference P/2010/0650)
How it compares
Hirddywel is the 89th-largest of 177 power plants planned, permitted or under construction in Wales and the 1,716th-largest of 3,222 in the United Kingdom by capacity; its 27 MW is <0.1% of the 300,461 MW of power plants planned, permitted or under construction we hold for the United Kingdom. It is not built yet, so it is ranked among the power plants planned, permitted or under construction in our data, apart from the ones running today. Ranks and totals cover the ones that report their capacity.
| Within | Rank | Total | Share |
|---|---|---|---|
| Wales | 89th of 177 | 16,801 MW | 0.16% |
| United Kingdom | 1,716th of 3,222 | 300,461 MW | <0.1% |
| All power plants planned, permitted or under construction in our data | 3,310th of 6,455 | 664,040 MW | <0.1% |
Nearby
Within 50 km of this power plant: 3 transmission lines, measured from the coordinates in the facts above.
| Name | Kind | Size | Status | Distance |
|---|---|---|---|---|
| SP Mid Wales (Electricity) Connections Project (SP Manweb) | Transmission line | — | Planned | 17 km |
| Mid Wales Electricity Connection (N Grid) | Transmission line | — | Cancelled | 39 km |
| Green Gen Vyrnwy Frankton | Transmission line | — | Planned | 40 km |
Operator and place
More from Vattenfall
- Thanet (extension)340 MW
- Thanet300 MW
- South Kyle Wind Farm240 MW
- Pen Y Cymoedd228 MW
- Ormonde Offshore150 MW
- Aultmore Forest - Buckie - Windfarm106 MW · planned
- Ourack105 MW · permitted
- European Offshore Wind Deployment Centre (EOWDC) (Aberdeen Bay - Demonstration site)96.8 MW
Other power plants in Wales
- Dinorwig1,728 MW
- Gwynt y Mor576 MW
- Ffestiniog360 MW
- Port Talbot Renewable Energy Plant350 MW
- Anglesey Biomass Power Station299 MW
- Tidal Lagoon Swansea Bay240 MW
- Pen Y Cymoedd228 MW
- Carnedd Wen Wind Farm150 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DESNZ Renewable Energy Planning Database (REPD), Open Government Licence v3.0.
- Source: U.S. Energy Information Administration (Sep 2026). EIA-860 / 860M / 923, Public domain.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- Contains public sector information licensed under the Open Government Licence v3.0. Planning Inspectorate: National Infrastructure Projects, Open Government Licence v3.0.
- RVO SDE(+)(+) projecten in beheer and SDE viewer. RVO SDE(+)(+) projecten in beheer and SDE viewer, Free reuse, no attribution required.