Greenhouse gas emissions of companies in Spain
92 Mt CO2e in 2025 from 967 EU ETS installations, aircraft and shipping companies registered in Spain, run by 763 companies; 44 Mt of it covered by free allowances. Source: Arcadium Data, data as of .
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Largest operating companies
| Operating company | Installations | Emissions 2025 | Free allocation | Allowances to buy |
|---|---|---|---|---|
| Repsol Petróleo, S.A. | 4 | 6.9 Mt | 4.9 Mt | 2.0 Mt |
| Naturgy Ciclos Combinados, S.L.U. | 11 | 6.1 Mt | ||
| Unión Eléctrica de Canarias Generación, S.A.U. | 11 | 5.0 Mt | ||
| ARCELORMITTAL ESPAÑA, S.A. | 4 | 4.8 Mt | 5.4 Mt | none |
| Compañía Española de Petróleos, S.A. | 3 | 2.7 Mt | 2.5 Mt | 0.2 Mt |
| Aboño Generaciones Eléctricas, S.L.U. | 1 | 2.6 Mt | ||
| Cementos Portland Valderrivas, S.A. | 6 | 2.5 Mt | 2.5 Mt | 36 kt |
| Endesa Generación, S.A. | 7 | 2.4 Mt | ||
| Iberdrola Generación Térmica, S.L. | 6 | 2.3 Mt | ||
| Vueling Airlines SA | 1 | 2.1 Mt | 0.4 Mt | 1.7 Mt |
| GAS Y ELECTRICIDAD GENERACION SAU | 6 | 2.1 Mt | ||
| Petróleos del Norte, SA | 1 | 2.0 Mt | 1.5 Mt | 0.4 Mt |
| EASYJET UK LIMITED | 1 | 1.6 Mt | 0.3 Mt | 1.3 Mt |
| Cemex España Operaciones, S.L.U. | 4 | 1.6 Mt | 1.7 Mt | none |
| Repsol Generación Ciclos Combinados S.L.U. | 2 | 1.6 Mt | ||
| Cementos Tudela Veguín SA | 3 | 1.4 Mt | 1.6 Mt | none |
| Jet2.com Limited | 1 | 1.4 Mt | 0.2 Mt | 1.1 Mt |
| LafargeHolcim España, S.A.U. | 3 | 1.3 Mt | 1.4 Mt | none |
| BP ENERGÍA ESPAÑA, S.A. | 1 | 1.2 Mt | 0.7 Mt | 0.5 Mt |
| Votorantim Cementos España, S.A. | 4 | 1.1 Mt | 1.1 Mt | none |
| Solvay Química S.L. | 1 | 1.0 Mt | 0.5 Mt | 0.4 Mt |
| Generación Carteia, S.L. | 3 | 1.0 Mt | ||
| Dow Chemical Iberica, SL | 2 | 0.9 Mt | 0.8 Mt | 0.1 Mt |
| Fertiberia, S.A. | 4 | 0.9 Mt | 0.8 Mt | 0.1 Mt |
| IBERIA LAE SA OPERADORA SU | 1 | 0.9 Mt | 0.2 Mt | 0.8 Mt |
Largest installations
| Installation | Activity | Country | Operating company | Emissions 2025 |
|---|---|---|---|---|
| ARCELORMITTAL ESPAÑA, S.A. | Production of pig iron or steel | Spain | ARCELORMITTAL ESPAÑA, S.A. | 4.7 Mt |
| Aboño Generaciones Eléctricas, S.L.U. | Combustion of fuels | Spain | Aboño Generaciones Eléctricas, S.L.U. | 2.6 Mt |
| Repsol Petróleo S.A. | Refining of mineral oil | Spain | Repsol Petróleo, S.A. | 2.4 Mt |
| Vueling Airlines SA | Aircraft operator activities | Spain | Vueling Airlines SA | 2.1 Mt |
| Repsol Petróleo S.A. - Instalación de Tarragona | Refining of mineral oil | Spain | Repsol Petróleo, S.A. | 2.1 Mt |
| Unión Eléctr. de Canarias Generación-CT Granadilla | Combustion of fuels | Spain | Unión Eléctrica de Canarias Generación, S.A.U. | 2.0 Mt |
| Petróleos del Norte S.A. | Refining of mineral oil | Spain | Petróleos del Norte, SA | 2.0 Mt |
| Unión Eléct.Canarias Generac.-CT Barranco Tirajana | Combustion of fuels | Spain | Unión Eléctrica de Canarias Generación, S.A.U. | 1.7 Mt |
| EASYJET UK LIMITED | Aircraft operator activities | Spain | EASYJET UK LIMITED | 1.6 Mt |
| Compañía Española de Petróleos S.A. - San Roque | Refining of mineral oil | Spain | Compañía Española de Petróleos, S.A. | 1.5 Mt |
| Repsol Petróleo S.A. - Instalación de Puertollano | Refining of mineral oil | Spain | Repsol Petróleo, S.A. | 1.4 Mt |
| Jet2.com Limited | Aircraft operator activities | Spain | Jet2.com Limited | 1.4 Mt |
| Bp Energía España, S.A. | Refining of mineral oil | Spain | BP ENERGÍA ESPAÑA, S.A. | 1.2 Mt |
| Compañía Española de Petróleos S.A. - La Rábida | Refining of mineral oil | Spain | Compañía Española de Petróleos, S.A. | 1.2 Mt |
| CCC - Cartagena | Combustion of fuels | Spain | Naturgy Ciclos Combinados, S.L.U. | 1.1 Mt |
| CCC. - Sagunto | Combustion of fuels | Spain | Naturgy Ciclos Combinados, S.L.U. | 1.1 Mt |
| Repsol Petróleo S.A. - Instalación de A Coruña | Refining of mineral oil | Spain | Repsol Petróleo, S.A. | 1.0 Mt |
| Solvay I | Production of soda ash and sodium bicarbonate | Spain | Solvay Química S.L. | 1.0 Mt |
| CCC -Palos de la Frontera | Combustion of fuels | Spain | Naturgy Ciclos Combinados, S.L.U. | 1.0 Mt |
| IBERIA LAE SA OPERADORA SU | Aircraft operator activities | Spain | IBERIA LAE SA OPERADORA SU | 0.9 Mt |
| Iberdrola Generación Térmica-Central C.C.Arcos | Combustion of fuels | Spain | Iberdrola Generación Térmica, S.L. | 0.9 Mt |
| Dow Chemical Ibérica, SL - La Pobla de Mafumet | Production of bulk chemicals | Spain | Dow Chemical Iberica, SL | 0.9 Mt |
| Gas y Electricidad Generación SAU-CT Cas Tresorer | Combustion of fuels | Spain | GAS Y ELECTRICIDAD GENERACION SAU | 0.9 Mt |
| VOLOTEA, S.L. | Aircraft operator activities | Spain | VOLOTEA, S.L. | 0.8 Mt |
| Repsol Generación Eléctrica(Escatrón-C.Combinado) | Combustion of fuels | Spain | Repsol Generación Ciclos Combinados S.L.U. | 0.8 Mt |
By sector
- Power and heat (302 installations)
- Metals and steel (48 installations)
- Cement, lime, glass and ceramics (168 installations)
- Chemicals (28 installations)
- Oil refining (10 installations)
- Pulp and paper (50 installations)
- Aviation (31 installations)
- Shipping (330 installations)
Emissions are verified EU Emissions Trading System emissions in tonnes of CO2 equivalent for 2025: the installations, aircraft operators and shipping companies covered by the ETS, not a company's total footprint (no scope 2 or 3, no sites outside the ETS). Free allocation is the free allowances allocated for the same year; "allowances to buy" is emissions minus free allocation, the exposure that grows as free allocation is phased out under CBAM from 2026. Companies only: an account holder that is not a company is never shown. Data as of 2026-10-25, updated yearly.
Emissions and allocation: European Commission, Union Registry of the EU ETS (verified emissions, free allocation, compliance and the list of operators; Commission reuse policy, CC BY 4.0). Parent company and pollutant releases of facilities: European Environment Agency, Industrial Emissions Portal (CC BY 4.0). Legal-entity identifiers: GLEIF (CC0).
Questions
Where does this data come from?
The European Commission publishes verified emissions, free allocation and compliance of every installation in the EU Emissions Trading System, and the list of operators with company registration number and LEI. We join them to the operating company, its website and its ultimate parent, and record changes each year.
Is this a full carbon footprint?
No. It covers emissions that fall under the EU ETS (power and heat, heavy industry, aviation within Europe, shipping). It has no scope 2 or scope 3 emissions and no sites outside the ETS.
Does the list show private persons?
No. Operators are shown only when they are companies. Account holders that could be natural persons are left out, and the data has no addresses or contact details.
Cite as: Arcadium Data, "Greenhouse gas emissions of companies in Spain: 92 Mt in 2025", https://arcadiumdata.io/emissions/es/, data as of 2026-10-25.