This advanced feature is under construction. First, you will enter energy bills for the past twelve months as well as brief information about your home or facility (year built, type of heating and cooling systems, approximate floor area, etc.). EnergyCAP will then statistically correlate your energy usage with the matching degree days in each billing period, determine if there is a valid correlation between usage and weather, and create an equation (a mathematical model) that indicates the daily base load (the non-weather portion) and the weather factor (the usage per degree day). This functionality is available today within EnergyCAP software; the estimated completion date for the Web-based tool is 2008.