It’s not like that really.

There really isn’t a central resource because it’s kinda fringe. But you can look into:

-Propane refrigerators out of RVs

-Super insulated DC fridges. (Sundanzer)

-Modifying chest freezers using a secondary on/off thermostat

- old school cold houses using a stream.

Personally, I am using a propane RV fridge, but I want to take a chest freezer ( top opening keeps cold air inside because it’s heavier than warm air. Stand up fridges pour the cold air on the floor every time you open them) and build a second layer of insulation around it, then add a secondary thermostat which turns the power on at 44 and off at 40 making it a refrigerator. A guy in Australia did this and claims it uses 110 watt hours per day. Which is incredible if true.