Green hydrogen is hydrogen produced using renewable energy sources, such as wind, solar, or hydroelectric power, through a process called electrolysis. During electrolysis, an electric current is passed through water to split it into hydrogen and oxygen. Unlike conventional hydrogen production methods, which rely on fossil fuels and produce carbon emissions, green hydrogen production is emissions-free and sustainable. Green hydrogen is gaining attention as a clean and versatile energy carrier that can be used in various sectors, including transportation, industry, and power generation. It can be used directly as a fuel for vehicles, blended with natural gas for heating, or used in fuel cells to generate electricity. When produced using renewable energy, green hydrogen has the potential to play a significant role in decarbonizing the economy and reducing greenhouse gas emissions. However, the widespread adoption of green hydrogen faces challenges such as high production costs, limited infrastructure, and the need for further technological advancements. Despite these challenges, green hydrogen holds promise as a key component of a sustainable energy future, offering a clean and efficient way to store and transport renewable energy and reduce reliance on fossil fuels.