The U.S. Environmental Protection Agency (EPA) offers a simple web-based tool that provides energy efficiency assessments for consumers wishing to manage their energy consumption.

Energy Star® Home Energy Yardstick

The EPA's Home Energy Yardstick calculates home energy use and assigns a score compared against similar homes. The performance-based home assessment takes home information provided by the consumer, such as utility bill data, and calculates a score using a statistical algorithm that determines the effects of local weather, home size and number of occupants on home energy use. The Yardstick score can then be increased by improving the energy efficiency of home features and/or equipment or by making changes in energy consumption. 

Visit the Home Energy Yardstick website