I happen to now that the largest energy supplier in Germany has a concept similar to what wattvision is doing. The dude who was working on it was working at the same lab as I was, and he told me about the concept. It's some type of infrared thing you put on top of your meter, and it sends the signal per wlan and desktop client to the web.

So, the wattvision idea seems like it's going to be the new hotness in coming months.