The global green hydrogen market is experiencing significant growth, with an estimated increase of USD 46.25 billion from 2024-2028 at a CAGR of 66.83%. This growth is attributed to the rising adoption of clean fuel and a notable trend towards utilizing hydrogen in refineries. Key market players like ACWA Power International, Air Liquide SA, and Air Products and Chemicals Inc. are actively involved in driving this market evolution. Renewable energy sources such as wind and solar power are pivotal in producing hydrogen through electrolysis. Major companies like Air Liquide are making substantial investments in renewable liquid hydrogen production, leveraging excess renewable energy sources. Supportive policies, particularly in regions like California with de-carbonization goals, are fostering increased demand for hydrogen as a clean energy solution. Hydrogen's versatility extends to fuel cells, transportation, power generation, and heating applications, indicating its potential in various sectors including aircraft fuel and space applications. Initiatives promoting the use of clean hydrogen, like the REFHYNE project, highlight the industry's commitment to reducing greenhouse gas emissions and transitioning towards a low-carbon economy. Despite challenges in scaling up production and transportation, hydrogen presents a promising alternative to traditional fossil fuels. Companies like Engie and Hydrogenics are spearheading initiatives in renewable hydrogen production and infrastructure development. The International Energy Agency foresees a substantial rise in hydrogen production as part of the global energy transition, emphasizing the importance of addressing environmental concerns and greenhouse gas emissions. In conclusion, the green hydrogen market is poised for significant expansion as the world shifts towards a low-carbon economy to combat climate change. Initiatives like the REFHYNE project and the growing interest in renewable hydrogen production indicate a bright future for hydrogen across various industries and applications.