Ternium’s Roadmap to Decarbonization Updated Decarbonization Target: Integrating Usiminas operations.
Following the release of its Sustainability Report 2025, Ternium has updated its decarbonization roadmap to incorporate Usiminas, establishing 2024 as its new baseline year.
Under this revised framework, Ternium targets a 15% reduction in CO₂ equivalent emissions intensity per ton of hot-rolled steel equivalent by 2030.
Target Framework & Methodology
• Accounting Standard: Calculated using the GHG Protocol methodology across all steelmaking operations up to the hot-rolling stage.
• Scope Coverage: Includes Scope 1 (direct emissions), Scope 2 (indirect emissions from purchased electricity), and Scope 3 (Category 1: upstream raw material production and Category 10: processing of semi-finished steel sold to third parties).
Ternium’s decarbonization strategy for 2030 comprises six axes of work:
• Prioritizing low-emission production technologies
• Increasing the share of renewable energy in the energy mix
• Expanding the capacity for CO2 capture and usage (CCU)
• Advancing energy efficiency initiatives and improving industrial performance
• Increasing the use of scrap in the metallic mix
• Using biomass as a substitute of coal in BF-BOF process
The decarbonization roadmap was developed considering Ternium’s current industrial configuration, the availability of industrial-scale technologies worldwide, the availability of certain raw materials in the countries where the company operates, and the evolution of local regulations.
Some of Ternium’s recent decarbonization drivers are the construction of its new DRI-EAF steel shop at the Pesquería Industrial Center in Mexico—a 2.6 million-ton facility engineered with carbon capture capabilities and readiness for green hydrogen when economically feasible. Additionally, the Vientos de Olavarría wind farm in Argentina, which now replaces around 90% of Ternium Argentina’s purchased electricity from the national grid.
