Green hydrogen, also known as renewable hydrogen, is gaining momentum as a key player in the energy transition towards a sustainable future. It is produced through water electrolysis using electricity from renewable sources like solar or wind energy, emitting significantly fewer greenhouse gases compared to grey or blue hydrogen production. The primary goal of green hydrogen is to limit global warming to 1.5°C, reduce reliance on fossil fuels, and offer a cleaner alternative in various economic sectors. Green hydrogen finds its applications across a wide spectrum, including transportation, energy generation, and storage. It can power hydrogen vehicles, fuel cells for electricity production, and serve as a raw material in industries like chemical, petroleum, pharmaceuticals, cement, and steel, reducing the reliance on fossil fuels and lowering emissions. The future potential of green hydrogen lies in its role in achieving a net-zero economy, complementing renewable energies, and providing solutions for sectors that face challenges in electrification, such as heavy industry and long-haul transportation. Despite the current challenges in production costs and infrastructure, efforts are underway to optimize storage, lower costs, and scale up production by 2030. Overall, green hydrogen offers a promising solution for decarbonization and sustainable energy use, with its significance poised to grow as renewable energy costs decrease and the demand for low-carbon alternatives rises.