The BIGGEST problem with clean energy

Solar is fine for most situations.  My household uses 40 watt hours per day in spring and fall.  I only need a 5 killowatt system and a battery large enough to keep the fridge and freezer cold through the night and the hot water hot some times.  The chargers and controllers are around 90% efficient but high draw appliances could be improved.  An air conditioner that can run on 200 watts will help.  Solar cooking during daylight hours and wood in the evening will also help.  A fire place in the winter.   Clothes lines instead of constant electric drying for clothes.  People got by without electricity 130 years ago and when they got it they didn't use much of it.  But now we sometimes use 120 kilowat hours a day.  A recent bill was $448.00 for electricity.  The main culprit is the heating and air conditioning unit.  Central heat and air is not efficient.  SMaller more local units are needed and smaller wall  or plug in heaters, solar heat also will help.   A solar panel needs to be cooled to run efficiently and a water pipe grid under each panel can capture heat for the winter time or just keep water hot during the summer time, this will make the difference.   Also knowing how long it takes to dry or cook something and not wasting time over cooking or heating something.  Under ground cold water radiators would also keep temperatures down in the summer if we ran that cold underground water through cooling radiator grills in the house.