Green hydrogen ammonia is a product of the combination of green hydrogen and ammonia production technology, which has a wide range of application prospects in the energy and chemical fields. It is produced by using green hydrogen and nitrogen to synthesize ammonia through a chemical reaction, and the whole process is powered by renewable energy, with zero - carbon emissions. Green ammonia can be used as a clean fuel, especially in the maritime transport field, it is expected to become an alternative to traditional marine fuels, helping the shipping industry reduce carbon emissions. In addition, green ammonia can also be used as an industrial feedstock, and it can also be used to transport and store hydrogen. Because the energy density of ammonia is higher than that of hydrogen, it is easier and more cost - effective to transport, and the hydrogen in ammonia can be released when needed for other uses.