If you're not putting it into the grid you can do whatever ratio. Have 20KW (or whatever) of panels, a suitably sized charge controller, a bunch of batteries, a

If you're not putting it into the grid you can do whatever ratio. Have 20KW (or whatever) of panels, a suitably sized charge controller, a bunch of batteries, and an inverter sized for whatever max AC current draw you need. Or if you can run everything you need DC, skip the inverter altogether.