$650/1800 Sq foot/used 3282KwH. Funny thing, today we are installing a new unit because previous unit motor too small, and on last leg. BUT... our electricity charge rate is .18. Guy across the street same floor plan has a rate of .05. I ham having a really big problem with this. All fo the rates need to be the same or some other more fair rate system, for we got hosed when we moved, and that is robbery. I shopped around and today in Texas the lowest rate you can get is 25.8.