Various estimates put the US’s entire energy supply as requiring enough solar panels to fill a square between 100 and 150 miles on a side. If efficiency goes up

Various estimates put the US’s entire energy supply as requiring enough solar panels to fill a square between 100 and 150 miles on a side. If efficiency goes up (which has upper bounds) and panels are integrated into buildings, solar being that virtually limitless supply doesn’t seem far-fetched.