Power mix by fuel (Spain)
Plant counts by primary fuel, WRI Global Power Plant Database (CC BY 4.0).
Spain electricity grid — mix & carbon intensity (2025)
Source: Ember / Our World in Data (CC BY 4.0).
The state of Spain’s power emissions
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.
Largest emitters (Mt CO₂/yr)
Emissions by owner (Mt CO₂/yr)
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.
Largest plants in Spain
| # | Plant | Fuel | MW |
|---|---|---|---|
| 1 | CN ALMARAZ 1 | Nuclear | 2,093 |
| 2 | ASCO GR | Nuclear | 2,060 |
| 3 | BESOS GRUPO 5 | Gas | 1,671 |
| 4 | ARCOS DE LA FRONTERA GRUPO 1 | Gas | 1,585 |
| 5 | As Pontes power station | Coal | 1,468 |
| 6 | CARTAGENA GRUPO 1 | Gas | 1,249 |
| 7 | Cartagena (Escombreras) power station | Gas | 1,249 |
| 8 | CCC SAGUNTO GRUPO 2 | Gas | 1,232 |
| 9 | ALDEADAVILA II 2 | Hydro | 1,226 |
| 10 | ESCOMBRERAS GRUPO 1 | Gas | 1,199 |
| 11 | El Fangal power station | Gas | 1,199 |
| 12 | PALOS DE LA FRONTERA GRUPO 1 | Gas | 1,167 |
| 13 | LITORAL DE ALMERIA GR 2 | Coal | 1,120 |
| 14 | CN COFRENTES | Nuclear | 1,102 |
| 15 | VANDELLOS GR 2 | Nuclear | 1,087 |
| 16 | TRILLO | Nuclear | 1,066 |
| 17 | TERUEL GR 3 | Coal | 1,056 |
| 18 | COMPOSTILLA II GR 5 | Coal | 1,005 |
| 19 | JOSE M ORIOL GRUPO 4 | Hydro | 953 |
| 20 | CT SANTURCE 2 | Oil | 897 |
Power plants in Spain by region
Cite this
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/
Frequently asked questions
How many power plants are in Spain?
There are 866 current or operating power-plant records in Spain in this open dataset, with about 89,407 MW of capacity. Historical and pipeline records remain available separately.
What is the largest power plant in Spain?
CN ALMARAZ 1 is the largest at about 2,093 MW (nuclear).
What fuels generate electricity in Spain?
The most common plant type in this dataset is wind (319 plants), across 9 fuel types in total.
How clean is Spain's electricity grid?
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)).