Ranking of groups · Spain
Largest CO2 emitter owners in Spain, by group
The 35 CO2 emitter owners in Spain, each company counted under its ultimate parent and ranked by the verified emissions in 2025 of the CO2 emitters the group's companies own, operate or hold. Repsol leads with 11,150,510 tCO2e across 8 CO2 emitters, held by 4 of its companies, ahead of Enel (8,701,919 tCO2e) and Naturgy (6,064,273 tCO2e).
A group is a parent company in the data and every subsidiary under it (GLEIF, Wikidata and the UK register of people with significant control); a company with no parent in the data is a group of its own. Each CO2 emitter counts once per group, in whole, or by the group's share where a source records one. A CO2 emitter with owners or operators in two groups counts in both, so the sizes do not add up to Spain's total. The 35 groups listed are linked to 61,826,534 tCO2e; the CO2 emitters in Spain with verified emissions in 2025 recorded add up to 60,102,888 tCO2e.
| # | Group, and its companies that hold them | Country | CO2 emitters | Verified emissions in 2025 | Largest |
|---|---|---|---|---|---|
| 1 | Repsol Through Repsol Petróleo, S.A., Repsol Generación Ciclos Combinados S.L.U. and 2 more | Spain | 8 | 11,150,510 tCO2e | Repsol Petróleo S.A. 2,370,702 tCO2e |
| 2 | Enel Through Unión Eléctrica de Canarias Generación, S.A.U., Endesa Generación, S.A. and 1 more | Italy | 13 | 8,701,919 tCO2e | Unión Eléctr. de Canarias Generación-CT Granadilla 1,941,603 tCO2e |
| 3 | Naturgy Through Naturgy Ciclos Combinados, S.L.U. | Spain | 9 | 6,064,273 tCO2e | CCC - Cartagena 1,133,989 tCO2e |
| 4 | ArcelorMittal España, S.A. | Spain | 1 | 4,673,784 tCO2e | ArcelorMittal España, S.A. 4,673,784 tCO2e |
| 5 | Compañía Española de Petróleos, S.A. Directly and through Generación Carteia, S.L., Generación Eléctrica Peninsular, S.A. and 1 more | Spain | 8 | 4,339,262 tCO2e | Parque Energético San Roque 1,506,300 tCO2e |
| 6 | Control Empresarial de Capitales SA de CV Through Cementos Portland Valderrivas, S.A. and Cementos Alfa, S.A. | Mexico | 6 | 2,849,368 tCO2e | Cementos Portland Valderrivas, S.A. 676,598 tCO2e |
| 7 | Aboño Generaciones Eléctricas, S.L.U. | Spain | 1 | 2,642,623 tCO2e | Aboño Generaciones Eléctricas, S.L.U. 2,642,623 tCO2e |
| 8 | Iberdrola Through Iberdrola Generación Térmica, S.L., EnergyWorks Cartagena, S.L. and 1 more | Spain | 6 | 2,560,284 tCO2e | Iberdrola Generación Térmica-Central C.C.Arcos 913,274 tCO2e |
| 9 | Holcim AG Through LafargeHolcim España, S.A.U. | Switzerland | 4 | 1,965,730 tCO2e | LafargeHolcim España SAU Instalación de Carboneras 671,019 tCO2e |
| 10 | Votorantim Cementos España, S.A. | Spain | 4 | 1,633,589 tCO2e | Votorantim Cementos España, S.A. 556,973 tCO2e |
| 11 | Cemex España S.A. Through Cemex España Operaciones, S.L.U. | Spain | 4 | 1,590,423 tCO2e | Cemex España Operaciones, S.L.U. - Alcanar 609,786 tCO2e |
| 12 | Energias de Portugal Through Central Térmica de Ciclo Combinado Grupo 4, S.L. and Totalenergies Clientes, S.A.U. | Portugal | 2 | 1,415,257 tCO2e | Central Térmica de Ciclo Combinado Soto de Ribera 756,805 tCO2e |
| 13 | Corporacion Masaveu SA Through Cementos Tudela Veguín SA | Spain | 3 | 1,399,604 tCO2e | Cementos Tudela Veguin, S.A. - La Robla 489,694 tCO2e |
| 14 | BP p.l.c. Through BP Oil España SAU | United Kingdom | 1 | 1,195,751 tCO2e | Bp Energía España, S.A. 1,195,751 tCO2e |
| 15 | Solvay S.A. Through Solvay Química S.L. | Belgium | 1 | 973,071 tCO2e | Solvay I 973,071 tCO2e |
| 16 | Trifuchsia MidCo S.à r.l. Through Fertiberia, S.A. | Luxembourg | 2 | 904,459 tCO2e | Fertiberia - Fábrica de Palos 506,639 tCO2e |
| 17 | Dow Inc. Through Dow Chemical Iberica, SL | United States | 1 | 884,346 tCO2e | Dow Chemical Ibérica, SL - La Pobla de Mafumet 884,346 tCO2e |
| 18 | Cementos Molins S.A. Through Cementos Molins Industrial, S.A. | Spain | 1 | 735,662 tCO2e | Cementos Molins Industrial S.A. 735,662 tCO2e |
| 19 | S.A.I.C.A. | Spain | 4 | 697,963 tCO2e | S.A.I.C.A.-1 199,853 tCO2e |
| 20 | Castleton Commodities International LLC Through Bizkaia Energia, SLU | United States | 1 | 558,058 tCO2e | Bizkaia Energía, S.L.U. - Amorebieta 558,058 tCO2e |
| 21 | Air Liquide Through Air Liquide Ibérica de Gases | France | 2 | 504,987 tCO2e | Air Liquide Ibérica de Gases, P.P H2 Puertollano 291,767 tCO2e |
| 22 | Bahía de Bizkaia Electricidad, SL | Spain | 1 | 440,683 tCO2e | Bahía de Bizkaia Electricidad - BBE 440,683 tCO2e |
| 23 | Calcinor SL Through Calera de Alzo, SL and Dolomitas del Norte | Spain | 2 | 423,456 tCO2e | Calera de Alzo S.L 223,236 tCO2e |
| 24 | Contourglobal Limited Through ContourGlobal La Rioja, S.L | United Kingdom | 1 | 392,810 tCO2e | ContourGlobal La Rioja, S.L 392,810 tCO2e |
| 25 | Alcoa Through Alúmina Española, S.A. | United States | 1 | 389,083 tCO2e | Alúmina Española - Planta de San Ciprián 389,083 tCO2e |
| 26 | Central Termica Soto 3 SLU | Spain | 1 | 383,727 tCO2e | Central Térmica Soto 3 383,727 tCO2e |
| 27 | CRH plc Through Cementos Lemona, S.A. | Ireland | 1 | 364,756 tCO2e | Cementos Lemona, S.A 364,756 tCO2e |
| 28 | Cimsa Cementos España, SAU | Spain | 1 | 323,792 tCO2e | Cimsa Cementos España, SAU-Buñol 323,792 tCO2e |
| 29 | Magnesitas Navarras, S.A. | Spain | 1 | 298,313 tCO2e | Magnesitas Navarras, S.A. 298,313 tCO2e |
| 30 | Ministry of Economics, Finance and Industrial and Digital Sovereignty Through ENGIE Cartagena, S.L. | France | 1 | 278,615 tCO2e | ENGIE Cartagena, S.L. - Escombreras 278,615 tCO2e |
| 31 | Air Products And Chemicals, Inc. Through S.E. Carburos Metálicos, S.A. | United States | 1 | 276,226 tCO2e | S.E. Carburos Metálicos, S.A. 276,226 tCO2e |
| 32 | Heidelberg Materials AG Through Heidelberg Materials Hispania Cementos, S.A. | Germany | 1 | 274,547 tCO2e | Heidelberg Materials Hispania Cementos, S.A. 274,547 tCO2e |
| 33 | Viscofan | Spain | 1 | 209,563 tCO2e | Viscofan España S.L.U. 209,563 tCO2e |
| 34 | Acerinox SA Through Acerinox Europa S.A.U | Spain | 1 | 168,370 tCO2e | Acerinox Europa, S.A.U. 168,370 tCO2e |
| 35 | Vertex Bioenergy SL Through Biocarburantes de Castilla y León, S.A. | Spain | 1 | 161,670 tCO2e | Biocarburantes de Castilla y Leon 161,670 tCO2e |
Every CO2 emitter owner in Spain, with the people who decide.All 35 groups with their companies, each CO2 emitter with its share where we know it, and an introduction to the people who decide on buying and selling.
Request the full listMore
- CO2 emitters in Spain97
- Largest CO2 emitters
- CO2 emitter owners in the world483 groups
- CO2 emitter owners in Germany124 groups
- CO2 emitter owners in Italy58 groups
- CO2 emitter owners in Poland44 groups
- CO2 emitter owners in France42 groups
- CO2 emitter owners in the Netherlands30 groups
- CO2 emitter owners in Belgium29 groups
- CO2 emitter owners in Czechia20 groups
Data on this page
- European Commission, Union Registry. EU Union Registry public data, CC BY 4.0.
- GLEIF LEI. GLEIF LEI, CC0 1.0.