1. Sign in to the home screen and click "USAGE" in the menu on the left-hand side.
2. Click on "Average Usage."
3. By default it will show usage over the past 2 years. The bars, which may vary in color, show the usage, and the optional red, black and/or blue lines track the temperature for that time period. You can click the buttons to choose how long of a time period you want to view, which dates to pull up or a very specific date range. If you have more than one meter or account, select the one you are looking for information on.