I just came across this article and thought it was worth sharing:
A fridge that takes only 0.1 kWh a day?

In a nutshell, an off-the-gridder converted a chest freezer into an ultra-efficient refrigerator simply by installing a secondary thermostat which cuts off the motor once the correct temperature is reached.

The downside is that being a chest getting stuff out isn't always easy, but if you want a fridge you can run off solar cells it's worth the hassle.

-Blast