The US will have 300 gigawatts of wind and solar by the end of 2022. We also have about 100 gigawatts of hydroelectric power. That is 400 gigawatts. If we can get enough battery storage to make full use of the sun and of strong winds, that would amount to a third of the 1200 gigawatts of electricity generation capacity in the US.

Source: Good Climate News: US will increase Solar Power by nearly 50% in 2022, and add 29 Gigawatts of Wind