Comment Re:Until we learn how to use less ... (Score 1) 502
If you don't mind keeping tanks of h2 and o2 around, the spare power could crack water to run an external combustion engine (like a Whispergen stirling) or feed a fuel cell. I suspect the technology to do that could be refined and made efficient. It's just a water bubbler in a DC circuit, after all. Two bell jars. Simple, if not common.