The solar inverter for my off-grid setup does allow for fallback to grid power if the solar and battery are out. So I would be able to do stable "partially sola

The solar inverter for my off-grid setup does allow for fallback to grid power if the solar and battery are out. So I would be able to do stable "partially solar" power without having to dump power back into the grid. Still not sure it's worth the cost, as you'd need a very consistent power draw to make a return, or batteries that make the return take even longer. Still a fun project though, and not something I built to make a return on.