You can take water apart with electricity and make fuel.

it takes a lot of electricity to do it.

not too much electricity...

You can pipe down water from a high place and use pressure to make much electricity. just like they do in Kemano running an aluminum smelter on a shitty little low drop system... not very much pressure.

You could do this all over the country where there is high and low.

use large diameter pipe for slow flow and pressure runs at full.