The amount of kilowatt hours a mini refrigerator consumes varies by manufacturer and model but is approximately 250 kWh per year. This figure is actually comparable to that of full-size models. The EnergyGuide label, which is located on the appliance, can be consulted for more specific information.
Some reasons why mini refrigerators consume nearly as much electricity as standard-sized ones include having less room for insulation and having more surface area per cubic foot of storage. This means that they are more vulnerable to ambient heat and must consume more electricity in order to keep cool. Mini refrigerators can be a liability in the event of a power failure due to their less efficient cooling.