At some point you have to do math and see how much all the batteries and solar panels will cost,
and how much a propane fridge that needs little to no electricity to run cost.
Cost in propane to run a propane fridge: negligible .
Cost of batteries if you run resi fridge all the time and wear out batteries quickly?
Replacement cost of batteries that you wore out?
How often to replace the batteries that are quickly wearing out?
Don't forget about the Danfoss 24/12 volt or 120 household voltage (which converts to 24 for fridge) compressor refrigerators (typically in chest configurations).