3000 sq. ft house with a 40 panel solar system installed 2015. $12.84 electric bill this month which is the same as every month. Solar lease payment of $100 a month. Bill is same Even in summer with central AC and swimming pool. We have gas heat and last winter had bills up to $600 a month. Installed smart thermostats and never set heat above 61 degrees when home. During day when at work/school heat set at 52 degrees. We wear hoodies! $200 gas bill this month. Just replaced 25 year old boiler last week with more efficient unit courtesy of my American Home Shield policy.