British project will convert diesel locomotive to steam power

[Think. Again.]

2. Cool, yet another use for green Hydrogen...

From the press release at https://eversholtrail.co.uk/news/a-new-dawn-for-steam-on-the-railway/ ;

Steamology has developed a patented new technology to generate high pressure steam without carbon emissions by burning hydrogen in oxygen inside small modular steam generators. This zero-carbon “green” steam can be created at a mega-watt scale. The New Dawn project will apply this innovation to rail by converting a Class 60 locomotive to a full powered prototype, heralding a return to steam after a break of more than 60 years.

This conversion will replace the diesel engine with 20 steam generators, four steam turbines and 140kg of gas storage, creating a 2MW zero emission steam locomotive. Conversion work is planned to commence in the UK in 2025. If successful, this technology could be applied as a modification to existing locomotives or incorporated into newly-built products by locomotive manufacturers.

And yes, "Green" Hydrogen, which is produced through processes that are CO2 emission-free, would need to be used in these steam generators to make this actually "Green Steam".