Same size house, also solar, also heat pump. Our electric is $25, basically GMP minimum charge. But we use 2 cords of wood to make the house a little more more toasty in the morning/evening. Granted, the solar was A LOT. The heat pump is incredibly efficient tho, for example, 20 degrees outside, heat set at 70, after everyone went to bed, our total electricity usage was less than 1 kw per hour.