Green hydrogen, generated through renewable resources, is at the forefront of transforming energy landscapes globally. With applications across transportation, industry, and power generation, it serves as a clean energy carrier critical for reducing greenhouse gas emissions. Major automotive manufacturers like Toyota and Hyundai are leading the way with hydrogen fuel cell vehicles like the Mirai and Nexo, promoting emission-free urban transportation. Initiatives by countries such as Germany, aiming for a hydrogen-powered future, and investments by companies like Adani Group and Air Liquide underscore the increasing importance of green hydrogen in the energy transition. The COVID-19 pandemic, while causing temporary disruptions, also accelerated the adoption of sustainable energy sources, positioning green hydrogen for significant growth. As countries shift towards low-carbon economies, green hydrogen is set to play a vital role in shaping a sustainable future, driving innovation in transportation, industry, and beyond.