That the US needs to import electric transformers is a problem. Instead of wasting billions on worthless windmills and solar panel farms, we should be investing in developing that manufacturing capability here and improving our electric grid system. In the not too distant past we have had regional blackouts covering large portions of the US caused by simple transformer failures. As part of improvements in our grid should be protections against EMP whether it comes from cosmic or nuclear attack threats.
A few years ago, Austin, TX and surrounding areas decided to cut people’s power for about half an hour in a round robin style during a freeze. They didn’t do it again. Lesson learned when they forgot to turn the power back on or couldn’t in some areas or when it was turned on transformers blew. They didn’t have many extra transformers so were scrambling to find some.