<p>Power generation plays a major role in any country’s industrial revolution and growth. Due to substantial worldwide economic and demographic expansion, there is an increased demand for energy globally. However, fossil fuels such as coal, gas, and oil constitute the main cause of climate change, contributing to over 90% of CO₂ emissions and 75% of greenhouse gas emissions. In the global energy shift, hydrogen technologies are regarded as one of the key participants. To achieve net-zero emission targets, several national and international programs suggest using hydrogen to decarbonize the energy, industrial, and transportation sectors. Green H₂ is a viable alternative to the present energy system based on carbon. Using a range of renewable resources, it can be utilized as a carbon-free energy source for homes, transportation, and industrial applications. The carbon footprint of green H₂ is primarily indirect and depends on the carbon content of the electricity used for electrolysis. Green H₂ is categorized as the most viable choice for clean energy generation because it produces only 0.0072&#xa0;kg of CO₂ every kilogram of hydrogen. The recent developments in various green H₂ production methods have been examined in detail in this article.</p>