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What fuel will ships burn as they move toward net zero? (news.mongabay.com)

submitted 1 day ago by wolfyvegan@slrpnk.net to c/energy@slrpnk.net

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Spurred largely by pending global regulations, the race is on to develop low- and zero-carbon fuels for ships and scale up their use.

There are “bridge fuels” that could be used during a transition period or in a limited way for the long term, such as biofuels, and then there are options that are more sustainable at scale, such as green methanol and green ammonia.

Experts continue to debate the pros and cons of green methanol and green ammonia, which are generally seen as the best options in the medium to long term.

A net-zero framework for shipping that would drive the adoption of alternative fuels is coming up for a vote in mid-October at a meeting of the International Maritime Organization in London.

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[–] ProdigalFrog@slrpnk.net 3 points 22 hours ago* (last edited 22 hours ago)

According to this very compelling article, we could actually skip transition fuels entirely, and switch over to iron-air electric batteries pretty much immediately. It just seems to be lesser known.

I think it'd be possible to combine iron-air batteries with new sail designs to extend the range even further without any carbon emissions.