Here’s a super, innovative way to convert a chest freezer into a highly, efficient refrigerator. (See PDF schematics here.)
My chest fridge (Vestfrost freezer turned into a fridge) consumes about 0.1 kWh a day. It works only about 2 minutes per hour. At all other times it is perfectly quiet and consumes no power whatsoever. My wind/solar system batteries and power-sensing inverter simply love it.
If you have to money to spend, there’s also KimChi fridge, which are chest fridges introduced by South Koreans who needed to keep their KimChi at 0 degrees fahrenheit, the optimum temperature for keeping KimChi at the right taste and fresh for up to 6 months. They sell these at Korean supermarkets, hopefully you live close to one like me. (Also read up on how to make kimchi here)