Need help shedding 3/4 ton - Lithium Battery project

He's got MAJOR money into it. And he's still running his generator for at least 3 hours per day. He'll never get his money's worth.

Yup,that don't make sense..I have looked into solar and it can be quite expensive and generators are getting cheaper..Lithium batteries are impressive in AH that can be used but weather seems to be an issue with them now...I just can't wrap my head around that much per battery....Maybe if I win the lottery..lol