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Ranking · facilities

Steel: the 20 largest CO2 emitters worldwide

The 20 largest iron & steel CO2 emitters worldwide. Integrated BF-BOF route ≈1.9 t/t — the single biggest CBAM-exposed product category by volume.

#FacilityCountryt CO2/yr (est. 2023)Value at €75.36/t
1POSCO Gwangyang steel plantSouth Korea34,799,208€2,622.5M
2Angang Steel Co LtdChina31,049,504€2,339.9M
3Wuhan Iron and Steel Co LtdChina25,916,033€1,953.0M
4Maanshan Iron and Steel Co LtdChina25,389,837€1,913.4M
5Inner Mongolia BaoTou Steel Union Co LtdChina25,167,415€1,896.6M
6POSCO Pohang steel plantSouth Korea24,457,044€1,843.1M
7Baoshan Iron and Steel Co Ltd HeadquartersChina23,974,641€1,806.7M
8Zhangjiagang Hongchang Steel Co LtdChina21,886,764€1,649.4M
9Shougang Jingtang United Iron and Steel Co LtdChina21,766,330€1,640.3M
10NLMK Lipetsk steel plantRussian Federation20,558,330€1,549.3M
11Hyundai Steel Dangjin steel plantSouth Korea20,049,392€1,510.9M
12Rizhao Steel Holding Group Co LtdChina19,273,891€1,452.5M
13JFE West Japan Works (Fukuyama) steel plantJapan19,085,123€1,438.3M
14Bengang Steel Plates Co LtdChina18,600,996€1,401.8M
15ThyssenKrupp Steel Duisburg steel plantGermany17,975,297€1,354.6M
16Magnitogorsk Iron and Steel WorksRussian Federation17,594,774€1,325.9M
17Tata Steel Jamshedpur steel plantIndia16,653,502€1,255.0M
18Xinyu Iron and Steel Group Co LtdChina16,560,215€1,248.0M
19Severstal Cherepovets steel plantRussian Federation16,537,222€1,246.2M
20JSW Steel Vijayanagar steel plantIndia15,936,581€1,201.0M

Source: Climate TRACE satellite estimates (2023) via our IndustryAtlas (30,000+ facilities) — indicative, not verified declarations; corrections welcome. Indicative value = est. emissions × CBAM certificate €75.36 (Q1 2026 official); actual CBAM applies only to EU-bound export share.

How this page is built: heat-loss figures follow ASTM C680 / ISO 12241 (the method behind our public calculators); facility emissions from Climate TRACE & EU ETS verified data across 30,000+ industrial sites; the 2026–2034 schedule is Regulation (EU) 2023/956, not a forecast. Published by Inzonex Research. Spotted an error? Tell us — we correct on evidence.
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Source: Inzonex Carbon Hub — inzonex.co.uk/carbon · prices dated as shown on each figure · schedule per Regulation (EU) 2023/956 · indicative analytics, not compliance advice.