Google wants to build the platform for collecting, managing, and analyzing home energy information for… well, if they have their way, for everybody on earth. PowerMeter is currently in internal beta testing. About four dozen Google employees have home energy monitors to record their power usage (as proxies for the smart meters of the future). A Home Energy gadget on their iGoogle home pages shows them shows how much energy they are using. The gadget tracks historical data and forecasts future trends (similar to the displays available for some of Google's finance applications).