Stegra – green hydrogen plant takes shape in Boden
With the four central electrolyzer buildings nearing completion, installation of the process equipment that will produce green hydrogen, the lifeblood of Stegra’s green iron and steel plants, is moving forward at pace.
Piyush Mishra, who oversees construction and equipment installation at the green hydrogen plant, says:
The goal is to install one electrolyzer per week,
The first steel was raised in late 2024, and just six months later, all four of the massive electrolyzer buildings are nearing completion and the first process equipment has been installed.
The 20 megawatt electrolyzers from thyssenkrupp nucera are an impressive sight, each measuring 40 meters long and nine meters high. Using alkaline water electrolysis, they will split water into hydrogen and oxygen using 100% renewable electricity, producing more than 100,000 tonnes of green hydrogen annually.
The green hydrogen will then be used to purify iron ore in our green iron plant. In a direct reduction process, the green hydrogen reacts with the oxygen in the iron ore, producing green direct reduced iron that is then used to make green steel. The main by-product is water, rather than the large amounts of CO2 emitted in traditional ironmaking processes.
Why alkaline water electrolysis?
After looking at several technology options, Stegra chose alkaline water electrolysis (AWE) due to its robustness, maturity and reliability.
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Stegra – green hydrogen plant takes shape in Boden, source
