Green hydrogen, derived from renewable sources via electrolysis, is gaining momentum as a sustainable alternative to grey hydrogen produced from fossil fuels. This clean energy solution plays a critical role in decarbonizing industries that are challenging to electrify, such as steel, cement, and heavy transport. By utilizing electrolyzers like PEM, alkaline, and SOEC, green hydrogen production ensures minimal environmental impact when powered by 100% renewable energy. Its versatility extends to applications in heavy industry, transportation, energy storage, heating systems, and power generation, offering a multi-faceted approach to clean energy adoption. The benefits of green hydrogen include emission-free energy production, flexibility in usage across various sectors, and support for integrating renewable sources into energy grids. As the world transitions towards a low-carbon economy, green hydrogen emerges as a pivotal tool for reducing greenhouse gas emissions, enhancing energy security, and promoting sustainable energy practices. By harnessing the potential of green hydrogen, industries and governments can accelerate the shift towards a cleaner and more sustainable energy landscape.