Australian engineers have developed a retrofit kit for refrigerators that will allow them to network and coordinate power use to minimize peak draws. The article doesn't make it clear if they're using power lines as the interconnects. If they are, it's all good. If not, setting up the internet connections will be a pretty significant hurdle.

Oh, and quote FTW: "A lot of people don’t realise [sic] that fridges cycle on and off regularly, which means you’ve got a bit of discretion about when they use power."