Find the monthly operating cost by multiplying your daily cost by 30. At the California average electricity price, a 300-watt unit costs $11.70 per month, or $140.40 per year. Refrigerators with a lower wattage rating will require much less energy, and thus cost much less to operate.
Find out how much your old refrigerator or freezer costs to operate and how much you can save by flipping it to ENERGY. hour or use the national average.
For example: If your refrigerator rated at. it only runs 40% of the time, then the. Average. Cost per. Typical. kWh per. Month @. Wattage. Month .125/kWh.
How much electricity does my refrigerator use?. (Consumer Reports, 2008) If you trade in an old fridge without an icemaker for an icemaker-equipped fridge, and you run. That's certainly not as much as it would cost you to buy a new fridge.