| Ammonia has attracted wide interest as a source of zero emission fuel for shipping. Ammonia does not contain carbon and is CO2 emission free under the right circumstances. Barriers to adoption relate among others to the source of ammonia and the future cost of green ammonia. Almost all ammonia in use today is made from hydrocarbons, and as such confers almost no carbon abatement advantage, while simply adding costs. By contrast, green ammonia – produced by electrolysis powered by renewables or nuclear – is an excellent source of zero-emission fuel. Ammonia from fossil sources with carbon capture and storage (CCS) is labelled blue ammonia. |