Green Steel and Decarbonization: How the Steel Industry is Transforming for a Net Zero Future
The word “Green Steel” may seem much more than a fancy term as this is really changing the way steel is being manufactured. As the steel industry is responsible for about 7–9% of global CO₂ emissions, making decarbonization critical. Here, Green steel focuses on using low-carbon or near-zero emission technologies instead of traditional coal-based blast furnaces.
Why Decarbonization is Critical for the Steel Industry
With the rising demand for steel due to the rapid growth of the infrastructure countries like India is heavily dependent on coal that supplies about 75% of the industry’s energy needs. To minimize the impact of carbon emissions decarbonisation is the need of the hour.
Key Technologies Driving Green Steel Production
1. Electric Arc Furnace (EAF)
Electric Arc Furnaces use recycled scrap steel and electricity instead of coal, making them far more environmentally friendly. Scrap-based steel production is significantly less energy-intensive and produces fewer emissions compared to traditional blast furnaces.
2. Hydrogen-Based Steelmaking (H2-DRI)
Hydrogen replaces coal in the reduction process, producing water instead of CO₂ emissions. Hydrogen-based projects are rapidly expanding worldwide and are expected to play a major role in near-zero emission steel production.
3. Carbon Capture, Utilization, and Storage (CCUS)
This technology captures CO₂ emissions before they enter the atmosphere and stores or reuses them, helping reduce the carbon footprint of traditional steel plants.
The Role of Recycling in Sustainable Steel Production
Steel is one of the most recycled materials globally. Increasing scrap usage significantly reduces emissions, energy consumption, and resource extraction. Scrap-based production is expected to increase further as part of global decarbonization strategies.
Global Shift Towards Low-Carbon Steel
Countries and companies worldwide are investing heavily in green steel technologies. Major producers have announced Net Zero targets, and new near-zero emission steel plants are under development in Europe, North America, and Asia.
These developments highlight the industry’s commitment to reducing emissions and building a sustainable future.
The Future of Green Steel in India and Globally
India, the world’s second largest steel producer, is focusing on increasing scrap usage and adopting cleaner technologies to reduce emissions intensity.
With infrastructure growth accelerating, green steel will play a critical role in building sustainable cities, infrastructure, and industries.