Company emissions in the EU Emissions Trading System
6,041 companies operated 9,643 installations, aircraft operators and shipping companies in the EU ETS and emitted 1035 Mt CO2e in 2025. Source: Arcadium Data, data as of .
Use it through the API License the full dataset
Largest emitters
| Operating company | Installations | Emissions 2025 | Free allocation | Allowances to buy |
|---|---|---|---|---|
| PGE Górnictwo i Energetyka Konwencjonalna S.A. | 5 | 43 Mt | 41 kt | 43 Mt |
| Lausitz Energie Kraftwerke AG | 7 | 39 Mt | 0.3 Mt | 39 Mt |
| RWE Power Aktiengesellschaft | 6 | 34 Mt | 0.4 Mt | 33 Mt |
| ThyssenKrupp Steel Europe AG | 15 | 15 Mt | 16 Mt | none |
| ENEA WYTWARZANIE SP. Z O.O. | 3 | 12 Mt | 4 kt | 12 Mt |
| ČEZ, a. s. | 10 | 11 Mt | 0.1 Mt | 11 Mt |
| voestalpine Stahl GmbH | 2 | 9.2 Mt | 7.1 Mt | 2.1 Mt |
| Equinor ASA | 24 | 8.8 Mt | 2.9 Mt | 5.9 Mt |
| ΔΕΗ Α.Ε | 24 | 8.6 Mt | 13 kt | 8.6 Mt |
| TAURON WYTWARZANIE S.A. | 6 | 8.6 Mt | 36 kt | 8.5 Mt |
By sector
- Power and heat (4,604 installations)
- Metals and steel (460 installations)
- Cement, lime, glass and ceramics (1,290 installations)
- Chemicals (409 installations)
- Oil refining (94 installations)
- Pulp and paper (543 installations)
- Aviation (213 installations)
- Shipping (1,852 installations)
CBAM goods
- Cement (192 installations)
- Iron and steel (329 installations)
- Aluminium (53 installations)
- Fertilisers (ammonia and nitric acid) (42 installations)
- Hydrogen (61 installations)
By country
- Austria (183 installations)
- Belgium (378 installations)
- Bulgaria (37 installations)
- Croatia (53 installations)
- Cyprus (44 installations)
- Czechia (207 installations)
- Denmark (28 installations)
- Estonia (48 installations)
- Finland (522 installations)
- France (898 installations)
- Germany (2,172 installations)
- Greece (468 installations)
- Hungary (152 installations)
- Iceland (15 installations)
- Ireland (144 installations)
- Italy (893 installations)
- Latvia (35 installations)
- Lithuania (73 installations)
- Luxembourg (28 installations)
- Malta (56 installations)
- Netherlands (539 installations)
- Norway (238 installations)
- Poland (265 installations)
- Portugal (151 installations)
- Romania (135 installations)
- Slovakia (93 installations)
- Slovenia (43 installations)
- Spain (967 installations)
- Sweden (775 installations)
Method
The European Commission publishes, every spring, the verified emissions, free allocation and compliance status of each installation in the EU ETS, and a list of operators with company registration number and LEI. Arcadium Data joins the files on the installation, keeps account holders that are companies, resolves each operator to its LEI, website domain and ultimate parent (GLEIF) where the registry id proves the link, and records changes from one load to the next: new installations, emissions jumps and drops of 25% or more, and compliance changes. Where an installation's facility reports to the EU Industrial Emissions Portal with an ETS id, its parent company and pollutant releases are added.
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
What is in the company emissions data?
Verified emissions and free allocation per year since 2013 for installations, aircraft operators and shipping companies in the EU ETS, with the operating company, its LEI, website and ultimate parent where the link is proven. Arcadium Data loads the Commission's yearly files and records every compliance change and jump in emissions.
Can I get the data as a file or through an API?
Yes. The API route /v1/emissions/companies and the MCP tool company_emissions return the same companies with filters for domain, LEI, country and sector; the whole dataset can be licensed as files.
Cite as: Arcadium Data, "Company emissions in the EU ETS 2025: 6,041 companies, 1035 Mt", https://arcadiumdata.io/emissions/, data as of 2026-10-25.