From: Real-Time Feedback

The PowerCost Monitor is a wireless energy monitor that displays how much electricity the user’s home consumes from moment to moment and in total. A countertop display unit can present total electricity costs in dollars and cents and in kilowatt hours, and users can see their peak energy cost within the last 24 hours. A sensor unit attaches to the outside of a home’s electric utility meter and wirelessly transmits use information to the Power Monitor. 866.607.2583.