Musk was proposing about 1.2TW of solar capacity, the US installed about 250GW since then and is currently installing about 50GW a year and is projected to have 770GW by 2036 in a decades time.

So the US is probably over-delivering compared with many things Elon has proposed delivering himself.

Apples and oranges though. One is a massive public works program and the other is private.