I highly doubt that will be possible. Actually I think it is entirely impossible, but I'm trying to future-proof my statement :-) The battery system will just

I highly doubt that will be possible. Actually I think it is entirely impossible, but I'm trying to future-proof my statement :-) The battery system will just know how much power is currently being used. It will have no way to identify which devices are currently drawing power. For that, you'd need something like this on each outlet: http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/B00009MDBU http://www.amazon.com/P3-P4400-Electricity-Usage-Monitor/dp/... Maybe future smart homes will have the Kill A Watt built-in to electrical outlets for monitoring purposes. I imagine you will be able to get metrics on current usage, peak usage periods et cetera.