POSCO has pledged to reduce carbon emissions by 10% from its baseline by 2030. However, the extension of the lifespan and the suspected expansion of the Gwangyang No. 2 blast furnace, which began this year, could increase the required reductions to as much as 12.505 million tonnes.

According to scenarios examining the remaining carbon budget (allowable carbon emissions) for the Korean steel industry to meet the 1.5°C target, four coal-based blast furnaces need to be shut down by 2030. The Korean steel industry will risk depleting its carbon budget very soon if it fails to begin phasing out these facilities immediately.

The relining of the Gwangyang No. 2 blast furnace signals an intention to continue emitting huge volumes of carbon for at least another 15 years. This will clearly undermine not only Korea’s national emissions reduction goals and its commitment to the internationally agreed-upon 1.5°C target, but also POSCO’s own carbon-neutral roadmap. In addition, the decision to reline the blast furnace risks exacerbating the global surplus of steel and hindering the efforts to meet the rising global demand for green steel.

Instead of investing in maintaining coal-based steelmaking, POSCO should prioritize transitioning to green steel. The company should also implement the following measures to demonstrate its commitment to decarbonization: