Are wind turbines remotely similar? I would have thought something mounted high up on an always-moving top would have to be smaller, lighter, and sturdier than something that sits on the ground in a controlled environment. I'm not sure the two are in competition for production.

No. Thermal turbines turn steam into spin, they're not quite jet engines, but they need 24/7 reliability under stressful physics for extended periods of time. Wind generators are just like big electric car motors, I would think?

https://www.spglobal.com/energy/en/news-research/latest-news...

I think it's more a shortage of electricity generation in general.