Just go to Harbor Freight, or Ebay, and buy what is called the "Kill A
Watt Meter"

It plugs into the wall, you plug the fridge into it, and it will
calculate the power consumption/wattage/amps used over how ever long
you want to leave in connected.

Now you know how much your fridge uses in say, three days.

Buy a new fridge that claims a certain amount of power consumption.
Use it, plug in the watt meter, and if it doesn't meet the claim, take
it back and tell them to stuff it.

The meter is about $30, and will tell you a lot about your energy
usage throughout the house, and help you keep your costs down.

Government guidelines are as unreliable as the government itself.

John