Steel Industry Scope 1 Emissions by Process Step. logo

Steel Industry Scope 1 Emissions

Scope 1 emissions include all Green House Gas (GHG) emissions produced by a steelmaker. They cover direct emissions made from plant and equipment owned or controlled by the reporting business. Examples include the off-gases that come from a blast furnace; or the emissions that may come from a slab reheat furnace. Most steps in the iron asnd steelamking process produce some quantity of greenhouse gases. The table below lists typical scope one emission levels from different process steps.

Scope 2 emissions, which refer to indirect emissions from the generation of purchased energy, are excluded from the estimates shown below.

Steelmaking stepCO2 output, tons / ton
Pellet plant0.057
Blast furnace / thm1.219
BOF plant0.181
DRI (natural gas)buy now
DRI (coal)buy now
Electric arc furnace - carbon steelbuy now
Electric arc furnace - alloy steelbuy now
Open hearth furnace1.72
Slab, billet mill or ingot shopbuy now
Continuous castingbuy now
Plate millbuy now
Hot strip millbuy now
Cold rolling millbuy now
Hot dip galvanising linebuy now
Organic coating line0.003
Section millbuy now
Bar or wire rod millbuy now
Welded tubebuy now
Seamless tubebuy now
Table above last updated 25th July 2023.

Note that table above shows indicative emissions values for typical operations, based on a compilation of public sources. Full analysis with identification of all sources used is available for purchase for $250+VAT. Actual output of GHG's may however vary significantly. For example, bar mill or hot strip mill emissions may differ markedly if there is a high or low proportion of billet or slab hot charging. Similarly, coke plant carbon dioxide output much depends on whether by-product recovery is used. With recovery, typical CO2 production is approximately 0.5 ton/ton coke. Without recovery, this can increases to around 1.25 t/t.


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Scope one steelmaking CO2 emission analysis

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