But here's what you're missing. You don't need a lot of batteries anymore. When you can buy thousands of watts of solar panels for dirt cheap and you don't need to worry about storing a lot of that electricity and batteries. You can get yourself one 100 amp hour lithium iron phosphate battery for $300 and that thing will last you longer than your life. Literally. Those 100 amp hours will be plenty to run anything except a massive electric heater all night. And with daytime solar panels you won't be draining the battery at all you'll be stuffing it full of electricity while you're using all of your appliances inside. So since solar panels have gotten so cheap it's better to just buy a lot more solar panels and you just don't need to have many batteries anymore. That's the big change.