The steel industry, a significant contributor to CO2 emissions, is facing pressure to reduce its environmental impact due to stringent regulations and the growing demand for sustainable products. Salzgitter AG, based in Germany, has embarked on an ambitious journey with its SALCOS® programme, targeting a remarkable 95% reduction in CO2 emissions by 2033 through the use of hydrogen instead of coal in steel production. This innovative approach involves directly reducing iron ore using hydrogen, leading to substantially lower CO2 emissions. The company has made substantial investments, with phase 1 of the programme alone amounting to 2.3 billion euros, supported by financial grants from the European Commission and the German government. Salzgitter's partnership with Deutsche Bank has also played a key role in securing funding for the project. Challenges persist, including the high cost of hydrogen and the need for a supportive policy framework. However, the company is optimistic about the potential for success, as evidenced by orders from major automakers like BMW, VW, and Daimler for green steel to enhance their supply chains' sustainability. Salzgitter's vision extends beyond its own transformation; if successful, it could pave the way for similar initiatives in the steel industry and beyond, potentially reshaping the economy towards a more sustainable future.