re: #713 Spare O’Lake

Why can’t they get the hydrogen from water (H2O)?

It takes a lot of energy. That’s what the nuclear plants are needed for.
By the first law of thermodynamics, we need to put at least as much energy in to split the water as we’d get back from chemical processes with the hydrogen. (Fusion would produce more energy, though)
And electrolysis is inefficient; IIRC, less than 50%, so we’d need at least twice the energy we’d get back.