Steel and shipping industries, known for their significant contributions to global CO2 emissions, are now at the forefront of a green revolution driven by hydrogen technologies. The article highlights the potential of green hydrogen in revolutionizing steel production, with Stegra's upcoming hydrogen-powered steel plant in Sweden poised to produce 5 million tons of green steel annually, cutting emissions by 95%. European policymakers are incentivizing the shift to green steel, and major car manufacturers are already signing agreements to source environmentally friendly steel. The shipping industry, another major emitter, is exploring hydrogen, ammonia, and methanol as potential zero-emission fuels. Singapore is actively testing these alternative fuels and investing in infrastructure to future-proof its ports. However, challenges such as high infrastructure costs, unclear regulations, and the need for massive investments are hindering the widespread adoption of hydrogen technologies. The article emphasizes the importance of infrastructure investment, strong demand signals, clear regulations, and scaling up renewable energy to support the transition to green hydrogen. Without decisive action, achieving net-zero emissions by 2050 will be at risk. While the momentum towards decarbonization is promising, urgent collaboration between governments, investors, and industry players is crucial to drive the transformation in the steel and shipping sectors and combat climate change effectively.