Plant counts by primary fuel, WRI Global Power Plant Database (CC BY 4.0).
Source: Ember / Our World in Data (CC BY 4.0).
Across the 85 Spain power plants carrying an asset-level CO₂ figure in this open dataset, total emissions are about 26.9 Mt CO₂/yr. The single largest emitter, Aboño power station (gas), accounts for about 15% of that 85-plant reported subset (not of the whole country). The top three owners — Corporación Masaveu SA [50%]; EDP España SA [50%], GAS NATURAL FENOSA GENERACION S.L.U., HIDROELECTRICA DEL CANTABRICO S.A. — control roughly 34% of that 85-plant reported subset. Most of these plants sit in a temperate Köppen climate zone.
CO₂ — measured (US EPA / EU ETS) or modelled (Climate TRACE), per plant · backbone WRI Global Power Plant Database (CC BY 4.0) · climate: Köppen-Geiger (WorldClim). CC BY 4.0.
| # | Plant | Fuel | MW |
|---|---|---|---|
| 1 | CN ALMARAZ 1 | Nuclear | 2,093 |
| 2 | ASCO GR | Nuclear | 2,060 |
| 3 | Lemóniz nuclear power plant | Nuclear | 1,860 |
| 4 | BESOS GRUPO 5 | Gas | 1,671 |
| 5 | ARCOS DE LA FRONTERA GRUPO 1 | Gas | 1,585 |
| 6 | As Pontes power station | Coal | 1,468 |
| 7 | CARTAGENA GRUPO 1 | Gas | 1,249 |
| 8 | Cartagena (Escombreras) power station | Gas | 1,249 |
| 9 | CCC SAGUNTO GRUPO 2 | Gas | 1,232 |
| 10 | ALDEADAVILA II 2 | Hydro | 1,226 |
| 11 | ESCOMBRERAS GRUPO 1 | Gas | 1,199 |
| 12 | El Fangal power station | Gas | 1,199 |
| 13 | PALOS DE LA FRONTERA GRUPO 1 | Gas | 1,167 |
| 14 | LITORAL DE ALMERIA GR 2 | Coal | 1,120 |
| 15 | CN COFRENTES | Nuclear | 1,102 |
| 16 | VANDELLOS GR 2 | Nuclear | 1,087 |
| 17 | Sayago nuclear power plant | Nuclear | 1,075 |
| 18 | TRILLO | Nuclear | 1,066 |
| 19 | TERUEL GR 3 | Coal | 1,056 |
| 20 | COMPOSTILLA II GR 5 | Coal | 1,005 |
Inzonex PowerAtlas (2026). Asset-level power-plant CO2 emissions — Spain. Derived from WRI GPPD, Climate TRACE, US EPA GHGRP and EU ETS (CC BY 4.0). https://inzonex.co.uk/poweratlas/spain/
There are 899 power plants in Spain in this open dataset, with about 95,842 MW of total capacity.
CN ALMARAZ 1 is the largest at about 2,093 MW (nuclear).
The most common plant type in this dataset is wind (341 plants), across 9 fuel types in total.
Spain's grid carbon intensity is about 154 gCO₂/kWh, with 74.6% low-carbon generation (<a href="https://ember-energy.org/" rel="nofollow">Ember</a> / <a href="https://ourworldindata.org/energy" rel="nofollow">Our World in Data</a> (CC BY 4.0)).
Power plants in Spain