[pmwhite]

I wonder if hydrogen is practical to transport in large quantities. My guess is no.

Your idea of methane, if it could be done efficiently, seems more likely.

[rapnie]

Ammonia might be a better way. Easy to produce, store and transport and contains higher hydrogen density than compressed hydrogen (I think).

http://www.ammoniaenergy.org/

[samatman]

The biosphere can't handle ammonia accidents at anything resembling the scale of crude oil and natural gas accidents. Methane is the better choice.

[peterashford]

I saw that very recently an Australian company had worked out a way of transporting hydrogen in large quantities by converting it into something else which I conveniently can't remember.

[spangry]

It was the CSIRO converting hydrogen to ammonia for transport, and then back to hydrogen again: http://www.abc.net.au/news/2018-08-08/hydrogen-fuel-breakthr...