- offers a significantly lower pollution potential (SOx, NOx and PM) compared to diesel
- has high thermal efficiency due to its octane numbers
- is less flammable than gasoline and diesel
- can be also produced from biomass
- as a fuel emits similar amounts of CO2 compared to fossil fuels
- combustion emits polluting formaldehyde emissions
- has corrosive characteristics
- lower energy density than fossil fuels
- combustion creates invisible flames, which can cause unsafe situations
Methanol is a hydrocarbon (CH3OH) which is mainly produced in industrial processes. Methanol is colorless and odorless liquid at room temperature.
In theory, CO2 can be captured from emissions from other industrial processes, to be used to produce methanol. If this is combined with green hydrogen, the fuel is CO2-neutral. However, this is a costly and energy intensive process. The relatively low cost and ease of availability makes methanol a promising alternative for the shipping sector. It is a great solution to reduce harmful emissions and comply with the upcoming regulations of both Sulphur content and NOx-emissions.
Methanol has a similar amount of carbon emissions as fossil fuels, so it cannot fulfill the future ambitions of IMO to phase out emissions entirely. It can only satisfy this requirement if an equal amount is captured from the air, a technique that is highly energy intense and not believed to become sufficiently efficient the coming decade.
In short – methanol is an alternative fuel considered for the maritime industry, but has no potential to become a zero harmful emission fuel.