[hcoles]

Yes, I was thinking of that. The size of the battery would probably be a function of the draw when there is no video traffic. I only need video when on demand or if the motion sensor picks up something. The gate is remote (almost dead end road), on a given day only the family traffic and UPS goes in/out. The wifi standby power required could be considerable. Good points. I'm now thinking a solar solution is too complicated - it could probably be made to work but too many things to go wrong.