Hmmm, well, I purchased a new GE 18.5 CF refrigerator form Home Depot about 4/5 months ago and it's rated at 380 KW a little over 1KW a day. I put my kill-watt meter on it for 2 months and I'm getting about 900W a day average. So I'm doing a lot better than the advertised power ratings.
Probably because the fridge is on a "interior" wall. What does that mean? Well, when the sun beats down on an exterior wall it will heat up whatever is behind that wall. Even with insulation it will still radiate heat at night. So anyway... It stays cooler! Designed it that way. Next? We don't have any kids, and don't open the fridge or try not to open it unless we know what we are going to get out of it. So obviously that saves energy. Most people open the fridge and spend some time looking around ...
One other way is we buy a lot of beer and soda (that we don't drink) In case we have company.... We keep it filled up.... You don't have to buy beer and soda, you can just fill it up with jugs of water. If you keep your fridge full if your not using the space than it's a lot more efficient. So that's what we do, and obviously if we have a big turkey or lot's of left overs we will just take some beer and soda out till left overs are gone and put it back in.
Next tip is to replace that stupid 60 watt light bulb with a 3 watt LED. Big deal you say? Well... The savings don't come from the light output itself (every little bit helps) but most of your savings is getting rid of that 60 Watt HEATER ... Since a 60watt incandescent bulb 25W - 110F 40W - 252F 60W - 260F ... I almost burned my fingers trying to change out the bulb! Why would you put 260 degree heater in your fridge? That is why LED's are so much BETTER! Because most of the energy used is producing Light waves NOT Heat waves.
Brings up my last and finial point! Wait for your dinner to cool down to room temps before throwing it in the fridge.
There is a guy on CraigsList stone cold in Pahoa that converts standard sears/home depot refrigerators to Maximum energy savings. What he does is gets a 10 CuFt fridge and disconnects the heater that is used to defrost the freezer. He says he saves about Half the cost by self defrosting. He says all you have to do is open the the freezer door (unplug) but I'm sure he also installs a switch on his units if he doesn't I would. Turn it off and prop open the freezer door for 12 hours once a month ... Just don't forget to close the door and and turn the fridge back on! But anyway, so he says doing this will almost cut your energy costs in half? He sells these at almost twice the cost of a new one. Not sure how hard it is to rewire it and put a switch in it. Don't really know if there is more to it than that. But it might be something I may look into myself for a DIY project. If I could get my fridge to half a KW a day for taking out the heater for defrosting and just propping the door open every month for a self defrost. I'd be down with that! :)
he also sells freezer chests as I was really interested in this at one point. He told me he can convert the freezer into a fridge but he doesn't recommend it ... I asked why and he said because it grows too much mold????? Dunno why that would be but that's what he said. I still might try a freezer chest / refer conversion one day but... Hmmm... I can live pretty frugal ... But a refrigerator standard size with a freezer is kinda high up on my ONE thing I really don't want to sacrifice ... Bending over shuffling food to get to what you need or finding out the ice cream wasn't low enough and turned into soup or something got shifted and froze that wasn't suppose to. I just don't think I want to go there. All and all, So far I've been on Helco for 6 months and I just read the meter not too long ago. It's at 320 KW! so far so good we are averaging 2KW a day with a modern connivance I didn't have to give up on my path to solar! :)
This all being said... I was @ HD the other day and noticed they had some freezer chests on sale for 170 bucks. Looked like a really good deal! Black Friday. Probably all sold out but can still buy at that price and pick up later....just an FYI.