This is very cool, I hope you stay on the trail of hydrogen, and where it fits in the system that nature seems to be forcing on us.
Have you read my article about filling the UK economy 50Bn black hole with light?
If we get the full consequences of it, we should realise it means we are moving to solar, and will sooner or later have to admit money has to be issued, to enable trading of solar product.
At that point, the existing efficiency concerns of hydrogen will be superseded, by the ability of all solar facilities to be freely scaled (limited only by available real estate).
The end result is that the vast majority of power will be generated by domestic and community solar, grids will be pretty much superseded, and all of those communities will be backed up by hydrogen to provide 24/7 power from solar.
A natural outcome of successfully backing up with hydrogen is generation of excess hydrogen, that is hydrogen which is not taken up by the fuel cells backing up the community microgrid.
So every community will be generating excess hydrogen.
There we see the practical scenario of hydrogen on every street corner.
A community can include or comprise an airfield, an airline, a trucking company, a car manufacturer, pretty much everything, except maybe a grid :)