Power plant · Wales, United Kingdom
Deeside Power Station
Deeside Power Station is a closed gas power plant in Wales, United Kingdom, with 498 MW of capacity, owned by Engie.
Grid connection
It closed in 2018, which freed up a 498 MW grid connection, unless it has been reassigned since.
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 | Wales | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Status | Closed | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Start year | 1994 | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| End year | 2018 | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Owner | Engie (company that returns the dukes survey, usually the owner) | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Capacity | 498 MW (capacity before it closed) | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
| Technology | CCGT | DUKES 5.11: Power stations in the United Kingdom · Open Government Licence v3.0 · checked 24 Oct 2026 |
Research on this power plant and its owner.Who owns it up to the parent company, its grid connection and planning status, and an introduction to the owner.
Request researchHow it compares
Deeside is the 7th-largest of 451 power plants in Wales and the 79th-largest of 5,834 in the United Kingdom by capacity; its 498 MW is 0.25% of the 200,500 MW we hold for the United Kingdom. Ranks and totals cover the power plants in our data that report their capacity, not every one in existence. Power plants planned, permitted or under construction are ranked apart.
| Within | Rank | Total | Share |
|---|---|---|---|
| Wales | 7th of 451 | 16,665 MW | 3% |
| United Kingdom | 79th of 5,834 | 200,500 MW | 0.25% |
| All power plants in our data | 1,214th of 15,800 | 1,923,633 MW | <0.1% |
Timeline
Dated facts about this power plant from its sources, oldest first.
- Started operating
- Retired
Owner and place
More from Engie
- Eemscentrale1,929 MW
- Engie Energía Cartagena1,199 MW
- Rugeley Power Plant Conversion1,000 MW
- Maximacentrale872 MW
- DK6790 MW
- CyCoFos490 MW
- SPEM480 MW
- Rugeley448 MW
Other power plants in Wales
- Pembroke2,325 MW
- Dinorwig1,728 MW
- Aberthaw B1,559 MW
- Connahs Quay1,380 MW
- Severn Power Ltd850 MW
- Gwynt y Mor576 MW
- Ffestiniog360 MW
- Port Talbot Renewable Energy Plant350 MW
Data on this page
- Contains public sector information licensed under the Open Government Licence v3.0. DUKES 5.11: Power stations in the United Kingdom, Open Government Licence v3.0.
- 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.
- JRC Open Power Plants Database (JRC-PPDB-OPEN), European Commission, Joint Research Centre. JRC Open Power Plants Database (JRC-PPDB-OPEN), CC BY 4.0.
- Bundesnetzagentur, Marktstammdatenregister. Marktstammdatenregister, DL-DE-BY-2.0.
- Dutch power station owners' and operators' pages. Dutch power station owners' and operators' pages, Facts only, each linked to its page.
- 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.
- Wikidata. Wikidata, CC0 1.0.