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In January 2025, Chinese steelmakers, members of the CISA industry association, reduced their overall energy consumption by 0.29% compared to the same month in the previous year. The total energy consumption per tonne of steel dropped by 0.33%, although electricity consumption per tonne increased by 0.19%, as reported by the association.
Total electricity consumption rose by 3.13%, with the production of self-generated electricity increasing by 8.69%. This boosted its share in the overall energy mix by 2.95 percentage points. Furthermore, clean energy production within the sector surged by 40.23%, with solar energy rising by 51.46%.
Water consumption by steel enterprises fell by 1,574 cubic meters, a decrease of 0.20%. However, water intake rose by 11.45%, and water recycling slightly declined by 0.39%. Despite this, the overall water reuse rate remained high at 98.27%, though it was marginally lower than the previous year.
Wastewater discharges were reduced by 3.14%, and concentrations of ammonia and suspended solids in water decreased by 9.25% and 12.16%, respectively. On the other hand, emissions of some chemical pollutants saw an increase: volatile phenols rose by 41.67%, total cyanides by 60.47%, and oil pollution by 1.58%.
Air pollutant emissions grew by 2.61%, but the industry achieved reductions in key pollutants, including sulfur dioxide (down 12.64%), particulate matter (down 3.55%), and nitrogen oxides (down 12.54%).
The steel industry continues to effectively utilize solid industrial waste. The utilization rates for steelmaking slag, blast furnace slag, and iron-containing dust remained above 97%, while the use of combustible gases, such as blast furnace and coke oven gas, exceeded 98%. Although the output of blast furnace gas declined significantly, its share in the energy balance dropped by 0.13 percentage points. Additionally, the utilization of converter gas per tonne of steel increased by 4.68%.
In 2024, total emissions in China’s steel industry increased by 4.1% compared to 2023. The shift towards more blast furnace-based capacity, relative to electric arc furnaces, contributed to higher emissions despite a decrease in overall steel production.
