Doing away with unnecessary friction costs and dramatically improving energy efficiency is a huge part of reducing expenditures and increasing savings again in the economy.
“If you wanted to power the entire U.S. with solar panels, it would take a fairly small corner of Nevada or Texas or Utah; you only need about 100 miles by 100 miles of solar panels to power the entire United States,” Musk said. “The batteries you need to store the energy, to make sure you have 24/7 power, is 1 mile by 1 mile. One square-mile. That’s it.”
See: Elon Musk says it’s possible to power the entire US with solar
You can also watch a clip of Musk discussing renewable energy, storage and electric transportation here on July 15.