There are already plenty of solutions for monitoring your power consumption, particularly with Google's relatively recent PowerMeter ecosystem, but if you want to do things the Microsoft way, Microsoft's Hohm is about to get third party device friendly. An SDK has been recently released to manufacturers, and we're supposed to expect the first compatible products by the summer. Interestingly, Microsoft has also mentioned that it "might" even get into the game of energy hardware at some point. The end game is to feed
