The global push towards sustainable development and combating climate change has led to a significant focus on decarbonizing the energy sector. The article highlights the importance of green NH3 as a viable and environmentally friendly carrier for hydrogen, aiding in reducing carbon footprint and costs. Efforts to produce ammonia from renewable sources, utilizing electrolyzers powered by green energy, have shown potential to cut GHG emissions significantly during the manufacturing process. With a strong emphasis on the need to increase NH3 production to meet global demand and tackle GHG emissions, the study examines various techniques for green ammonia production and storage. It also delves into the technical and economic barriers hindering the commercialization of green NH3. The utilization of ammonia as a carbon-free fuel in sectors like marine transportation and energy storage is outlined as a promising avenue for sustainable energy solutions. Despite the positive outlook, challenges such as scaling up production and storage infrastructure for green NH3 remain, highlighting the need for scalable, cost-effective, and sustainable technologies in the energy sector.