Greenhouse gas emissions of companies in Norway
24 Mt CO2e in 2025 from 238 EU ETS installations, aircraft and shipping companies registered in Norway, run by 161 companies; 12 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 |
|---|---|---|---|---|
| Equinor ASA | 24 | 8.8 Mt | 2.9 Mt | 5.9 Mt |
| Elkem ASA | 5 | 1.1 Mt | 0.9 Mt | 0.2 Mt |
| Yara Norge AS avd. Porsgrunn | 1 | 1.1 Mt | 0.9 Mt | 0.1 Mt |
| HEIDELBERG MATERIALS SEMENT NORGE AS | 2 | 0.8 Mt | 1.0 Mt | none |
| Aker BP ASA | 7 | 0.8 Mt | 74 kt | 0.8 Mt |
| Gassco AS | 4 | 0.8 Mt | 0.2 Mt | 0.6 Mt |
| ConocoPhillips Skandinavia AS | 1 | 0.8 Mt | 0.4 Mt | 0.3 Mt |
| Hydro Aluminium AS Sunndal aluminiumsverk | 1 | 0.7 Mt | 0.6 Mt | 47 kt |
| Eramet Norway AS | 3 | 0.6 Mt | 0.6 Mt | 85 kt |
| Alcoa Norway AS | 2 | 0.6 Mt | 0.6 Mt | 31 kt |
| Wacker Chemicals Norway AS | 1 | 0.4 Mt | 0.3 Mt | 0.1 Mt |
| INEOS Rafnes AS | 1 | 0.4 Mt | 0.4 Mt | none |
| Hydro Aluminium AS Karmøy aluminiumsverk | 1 | 0.4 Mt | 0.3 Mt | 66 kt |
| OKEA ASA | 2 | 0.4 Mt | 93 kt | 0.3 Mt |
| Color Line Marine AS | 1 | 0.3 Mt | ||
| Hydro Aluminium AS Årdal metallverk | 1 | 0.3 Mt | 0.3 Mt | 37 kt |
| Finnfjord AS | 1 | 0.3 Mt | 0.2 Mt | 64 kt |
| Sør-Norge Aluminium AS | 1 | 0.3 Mt | 0.3 Mt | none |
| Vår Energi ASA | 3 | 0.3 Mt | 19 kt | 0.2 Mt |
| Ineos Tyssedal AS | 1 | 0.2 Mt | 0.3 Mt | none |
| KNOT Management AS | 1 | 0.2 Mt | ||
| Maran Shuttle Tankers Norway AS | 1 | 0.2 Mt | ||
| NorFraKalk AS | 1 | 0.2 Mt | 0.1 Mt | 44 kt |
| Widerøe | 1 | 0.2 Mt | 32 kt | 0.1 Mt |
| Odfjell Management AS | 1 | 0.1 Mt |
Largest installations
| Installation | Activity | Country | Operating company | Emissions 2025 |
|---|---|---|---|---|
| Equinor ASA Raffineri Mongstad | Refining of mineral oil | Norway | Equinor ASA | 1.5 Mt |
| Yara Norge AS Porsgrunn | Production of bulk chemicals | Norway | Yara Norge AS avd. Porsgrunn | 1.1 Mt |
| Equinor ASA Osebergfeltet | Combustion of fuels | Norway | Equinor ASA | 1.0 Mt |
| Aircraft operator activities | Aircraft operator activities | Norway | 1.0 Mt | |
| Equinor ASA Statfjordfeltet | Combustion of fuels | Norway | Equinor ASA | 0.8 Mt |
| ConocoPhillips Skandinavia AS Ekofiskområdet | Combustion of fuels | Norway | ConocoPhillips Skandinavia AS | 0.8 Mt |
| Equinor ASA Åsgardfeltet | Combustion of fuels | Norway | Equinor ASA | 0.8 Mt |
| Gassco AS Kårstø gassprosesseringsanlegg | Combustion of fuels | Norway | Gassco AS | 0.7 Mt |
| Equinor ASA Hammerfest LNG | Combustion of fuels | Norway | Equinor ASA | 0.7 Mt |
| Hydro Aluminium AS Sunndal aluminiumsverk | Production of primary aluminium | Norway | Hydro Aluminium AS Sunndal aluminiumsverk | 0.7 Mt |
| Norcem AS avdeling Brevik | Production of cement clinker | Norway | HEIDELBERG MATERIALS SEMENT NORGE AS | 0.6 Mt |
| Equinor ASA Gullfaksfeltet | Combustion of fuels | Norway | Equinor ASA | 0.6 Mt |
| Equinor ASA Sleipnerfeltet | Combustion of fuels | Norway | Equinor ASA | 0.5 Mt |
| Alcoa Mosjøen | Production of primary aluminium | Norway | Alcoa Norway AS | 0.4 Mt |
| Wacker Chemicals Norway AS | Production or processing of non-ferrous metals | Norway | Wacker Chemicals Norway AS | 0.4 Mt |
| Ineos Rafnes | Production of bulk chemicals | Norway | INEOS Rafnes AS | 0.4 Mt |
| Aker BP ASA Skarvfeltet | Combustion of fuels | Norway | Aker BP ASA | 0.4 Mt |
| Equinor ASA Snorrefeltet | Combustion of fuels | Norway | Equinor ASA | 0.4 Mt |
| Hydro Aluminium AS Karmøy aluminiumsverk | Production of primary aluminium | Norway | Hydro Aluminium AS Karmøy aluminiumsverk | 0.4 Mt |
| Equinor ASA Troll B og C | Combustion of fuels | Norway | Equinor ASA | 0.4 Mt |
| Maritime operator | Maritime operator | Norway | 0.4 Mt | |
| Equinor ASA Heidrunfeltet | Combustion of fuels | Norway | Equinor ASA | 0.3 Mt |
| Elkem Salten | Production or processing of ferrous metals | Norway | Elkem ASA | 0.3 Mt |
| Color Line Marine AS | Maritime operator | Norway | Color Line Marine AS | 0.3 Mt |
| Hydro Aluminium AS Årdal metallverk | Production of primary aluminium | Norway | Hydro Aluminium AS Årdal metallverk | 0.3 Mt |
By sector
- Power and heat (93 installations)
- Metals and steel (22 installations)
- Cement, lime, glass and ceramics (13 installations)
- Chemicals (8 installations)
- Pulp and paper (10 installations)
- Aviation (7 installations)
- Shipping (84 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 Norway: 24 Mt in 2025", https://arcadiumdata.io/emissions/no/, data as of 2026-10-25.