The prompt for that must have been hella long

I was going to say, those are the best AI solar panels I've ever seen. Usually it really struggles with the rectilinear stuff.

I don't know about this image in particular, but if you do enough AI in-painting and/or manual digital painting over details and such you can get very good images, but it does take a long time. You can get like 80% of a perfect image with a prompt in 20 seconds or so, and a lot of people stop there, because the last 15-20% can take as long as a whole painting from scratch.