[adgjlsfhk1]

solar isn't free but it is the cheapest form of electricity we have (LCOE), and it's cost fell by a factor of 4 in the past decade. people absolutely want to hear their homes and boil water, but both of those are energy demands that are easy to time shift. any reasonably built home in the past decade is insulated well enough that you can only heat it during the day and keep it at a comfortable temperature. similarly, hot water tanks can be heated hours in advance when there's plenty of spare electricity. this obviously doesn't apply to all forms of energy demand, but heating (air and water) is the majority of consumer demand and is easily shiftable.