Hydrogen is not great as a means of exporting energy, it is, unfortunately, hard to transport. Hydrogen is about 1/3 the energy/volume density of natural gas -

Hydrogen is not great as a means of exporting energy, it is, unfortunately, hard to transport. Hydrogen is about 1/3 the energy/volume density of natural gas - so much worse than liquid fuels - and has a very low boiling point so liquified hydrogen is very (energy and cost) expensive to produce. Pipelines can work though, if you can get them built. The lower energy density vs. natural gas is offset by a higher flow speed. And the energy transported by one pipeline could be much greater than a HVDC power line.