One thing to keep in mind is that while commercial and consumer users of electricity generally require steady, high-quality, alternating current, electrolysis c

One thing to keep in mind is that while commercial and consumer users of electricity generally require steady, high-quality, alternating current, electrolysis can be done with low-quality, intermittent direct current of the sort that can be generated with low-tech electrostatic generators. A whole new parallel infrastructure of low-quality electricity generation could be built without too much effort for electrolysis of iron oxide, powered by low-grade heat and motion sources that currently can't be effectively utilized.