To cover the electricity needs created by using solar as base load for the US, you would need on the order of 10 TWh of sotorage -- that means basically using all of the Great Lakes as water storage, filling them up with 300 feet of extra water every day and pumping that out every night. Theoretically possible, but an unimaginable feat of engineering and prone to nimbys in Chicago/Detroit/Cleveland, far more so than creating a few dozen extra nuclear plants...
To cover the electricity needs created by using solar as base load for the US, you would need on the order of 10 TWh of sotorage -- that means basically using all of the Great Lakes as water storage, filling them up with 300 feet of extra water every day and pumping that out every night. Theoretically possible, but an unimaginable feat of engineering and prone to nimbys in Chicago/Detroit/Cleveland, far more so than creating a few dozen extra nuclear plants...