I’m sure he didn’t do it to increase his costs. The whole idea is for cheap energy. Even if his initial layout was considerable, long term should pay off.
Maybe he didn’t pay for it. Maybe it was paid for him by a university or research grant just to make a hydrogen house as an experiment to make it better?
He might also be doing it independently, as a living experiment. It should be cheaper, I think, because his only fuel would be water.
Even if his initial layout was considerable, long term should pay off.
but things advance and are improved and this could be obsolete in no time and you’re stuck with the bill