Computerized Electricity Systems has a software/hardware home energy solution that tracks energy usage in a residential setting. They offer a replacement electrical panel that allows for monitoring of energy usage within the various breakout lines of the house wiring. They also provide a software tool, a portal, for displaying the energy being used.
System prices range from $600-$3000 depending on the options.
Announced at CES 2010, this is a wifi enabled device that sits between a house appliance and the wall socket. It has a small linux based OS and web site so you can access each device via a web interface.
It can monitor the energy use as well as control the device so it does a lot. Sadly, it it said to cost about $80 each.
TOO Expensive. Seems like a low tech Kill-a-Watt ($20) and a spreadsheet would still be more efficient.
News | Tenrehte Technologies, Inc. | USA.