Power plant · Galicia, Spain
Saint Stephen Dam
Saint Stephen Dam is a hydroelectric power plant in Galicia, Spain, with 442 MW of capacity, owned by Iberdrola.
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 | Galicia | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 JRC Open Power Plants Database (JRC-PPDB-OPEN) · CC BY 4.0 · checked 24 Oct 2026 |
| Status | Operating (commissioned) | JRC Open Power Plants Database (JRC-PPDB-OPEN) · CC BY 4.0 · checked 24 Oct 2026 |
| Start year | 1945 | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 |
| Owner | Iberdrola | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 |
| Operator | Iberdrola | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 |
| Capacity | 442 MW | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 |
| Capacity | 439 MW (sum of operating units, EST1 63.9 MW; EST2 63.8 MW; EST3 62.7 MW; EST4 62.5 MW; EST5 0.5 MW; EST6 0.2 MW; S.EST IIG1 185.3 MW) | JRC Open Power Plants Database (JRC-PPDB-OPEN) · CC BY 4.0 · checked 24 Oct 2026 |
| Units | 7 units | JRC Open Power Plants Database (JRC-PPDB-OPEN) · CC BY 4.0 · checked 24 Oct 2026 |
| Technology | Hydro | Wikidata · record · CC0 1.0 · checked 24 Oct 2026 |
| Technology | Reservoir hydro (registered as Hydro Water Reservoir) | JRC Open Power Plants Database (JRC-PPDB-OPEN) · CC BY 4.0 · checked 24 Oct 2026 |
| Coordinates | 42.4143, -7.6523 | Wikidata · record · CC0 1.0 · 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 researchAlso recorded as
2 sources record Saint Stephen Dam; this page joins their facts, each with its own source. Links to any of the records lead here. How records are matched.
| Name in the source | Identifier | Source | Matched on |
|---|---|---|---|
| Saint Stephen Dam | asset:wikidata:Q5760806 | Wikidata | — |
| EST | asset:eic:18WEST1-12345-AZ | JRC Open Power Plants Database (JRC-PPDB-OPEN) | Same coordinates, capacity and technology |
How it compares
Saint Stephen Dam is the 3rd-largest of 21 power plants in Galicia and the 67th-largest of 245 in Spain by capacity; its 442 MW is 0.5% of the 88,007 MW we hold for Spain. 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 |
|---|---|---|---|
| Galicia | 3rd of 21 | 6,234 MW | 7.1% |
| Spain | 67th of 245 | 88,007 MW | 0.5% |
| All power plants in our data | 1,332nd of 15,799 | 1,918,113 MW | <0.1% |
Owner, operator and place
More from Iberdrola
- Almaraz Nuclear Power Plant2,017 MW
- Castelló thermal power station1,621 MW
- Arcos de la Frontera Power Plant1,585 MW
- La Muela-Cortes hydro power plant1,512 MW
- Santurtzi Power Plant1,335 MW
- Aldeadávila Dam1,243 MW
- Cofrentes Nuclear Power Plant1,064 MW
- Trillo Nuclear Power Plant1,003 MW
Other power plants in Galicia
- As Pontes Power Station2,259 MW
- Meirama Power Plant557 MW
- CON400 MW
- Sabón Power Plant391 MW
- Puente Bibey hydro power plant313 MW
- Belesar310 MW
- central hidroeléctrica de Hedrada270 MW
- Soutelo hydro power plant215 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.