Well, I have to admit, I've been corrected. It's been years since I ran the numbers. Solar cell efficiency has either increased dramatically in the last decade, or the numbers available on-line have been "corrected" to confirm the narrative. In any case, my calculations now come out fairly close to the numbers you posted.
So that made me think, I'd better check my statement about how many square miles are currently used by solar and wind farms. I found this article:
Bloomberg - The U.S. Will Need a Lot of Land for a Zero-Carbon Economy
It says that we currently have 7.1 million acres in wind and solar farms. An acre is 1/640th of a mile. So that means we ALREADY HAVE 11,094 square miles dedicated to "green energy". Maybe you could ask Elon how come we haven't already arrived at his energy nirvana? It's a puzzler!
But good news, everybody! Look at the chart at the bottom of that page. Bloomberg (a long time advocate of green energy) says we've currently only mowed down the equivalent of Missouri and Iowa, because we've got Hydroelectric and corn! (But you might note that little black 3.5 million acre corner of their map for dirty old Natural Gas, over there by DuBuque, which is currently providing 80% of our energy needs!)
Keep scrolling, and you will find the map that really scares me. It's the one that tells you what we'll need by 2050, when we're "Carbon Neutral" and we're all driving EV's. In addition to Missouri and Iowa -- Nebraska, Kansas, Oklahoma, Arkansas, Illinois, Kentucky, and Indiana all get mowed down for wind farms. Where did they get their math? Didn't we just prove that wrong? Wait -- does Bloomberg know something we don't know?
Oh well, who needs 'em, anyway? Flyover country, right?