> What about heat in a power outage? Right now we'd have no heat. I'm thinking of putting together a small general purpose battery backup that we can normally

> What about heat in a power outage? Right now we'd have no heat. I'm thinking of putting together a small general purpose battery backup that we can normally charge via the wall but can also charge via the SPS on the solar system we're installing. I'd use it for whatever was highest priority; depending on time of year that could be boiler, sump pump, fans, or unexpected things.