Green hydrogen is a fuel produced by electrolysis that decomposes water into hydrogen and oxygen using renewable energy sources such as the sun and wind, and is used to realize energy conversion and secure a sustainable future. It has proven to be an important factor. Increasingly popular with major oil and gas companies, it is also useful as a fuel for mining vehicles, trains, planes, trucks, buses and even sea shipping. In addition to being used as an energy store, green hydrogen is currently used primarily in the chemical and petrochemical industries.