I could save a little by switching over to propane, but wrestling tanks around in 100 degree heat and taking them to get refilled is not worth the effort. I was shocked to discover that my refrigerator has been using about 10 kwh/day at a cost of over $50/month. I am now using an Alpincool 15 portable refrigerator which has a danfoss compressor for less than $0.20/day.
This experiment started while looking for a way to cut my electric bill. My first, and wrong, assumption was that Air Conditioning was over 90% of my bill. It was actually only about 60%