2100 sf townhouse, all electric. Bills run from $80 (in months like April and October when neither the heat or ac comes on) to a one time bill of $170 during this last cold snap. Usually around $130. However, this imcluded the water and sewer protection plans, so, electric alone is probably alround $20 less per month.
Last owner put on new roof and new windows, insulated a lot. I put in new water heater and lots of LED lights.