I just read another article — by another expert in combatting climate change — about how U.S. electric supply can get to a hundred percent renewables. I’ve lost count of how many of these articles I’ve seen.
A hundred percent can be achieved economically and rather expeditiously, it is typically asserted, remarkably without nuclear power plants. The magic bullet is usually massive quantities of battery storage. But the more thoughtful of these articles adds huge amounts of hydroelectric storage and, in particular, high-voltage transmission.