I also would like an update on this feature.

btw, Thomas I have done logging with a refrigerator using a meter based on electric imp.

themzlab.tumblr.com/wattmeter

if you are up for a challenge, the information is there to build it. However, it really isn’t necessary for your project.

Obviously appliances will vary but I found mine ran a pretty repetitive duty cycle except a few times a week when it burned more power to do a defrost cycle. You can get a good idea of consumption using a Kill-A-Watt meter for one week, and those are pretty cheap. You can get the power factor while the compressor is on.