Wash clothes, vacuum, etc while the generator runs to charge the batteries. You sized the solar panels conservatively, knowing you can add more or trade to a larger inverter. Meanwhile, high power demands for guest s extra lights and laundry, for building projects, or pumping a deep well can be met by a generator. Propane is connected from the same tank at the same pressure that supplies the home stove and water heater. No more running out of gas, handling fuel, or dirt or water getting in the fuel.
Propane keeps longer than gasoline or diesel.
The engine runs clean, oil stays cleaner. Exhaust is clean - no odor. Propane starts easily even in winter cold without a choke, so can be started and stopped from inside the house year round. Likewise, propane is easiest to connect to automatic start systems. Kohler diesel units are available, with factory estimated 15,000 hours between rebuilds.