Google PowerMeter now in prototype, will receive information from utility smart meters and energy management devices and provide anyone who signs up access to her home electricity consumption right on her iGoogle homepage. The graph on the right shows how someone could use this information to figure out how much energy is used by different household activities. Google will only provide the software, you will need to have a smart meter already installed at your house in order for powermeter to work.
The software from Google will be free for consumers and utilities. currently is available for Google employees only. check the official website for more information and time of release. http://www.google.org/powermeter/index.html