[yarddog]

I remember an article by William F. Buckley I think in the 1960s about how vulnerable our power grid was.

Maybe it is safer now but I doubt it.

[Buckeye McFrog]

Maybe it is safer now but I doubt it.

With 100 million web enabled "smart meters" hooked up to it I highly doubt it.

[litehaus]

“The U.S. power grid is continuing to be targeted and probed by Russian cyber actors, according to a notable cybersecurity firm,”

A bunch of muzzys could use easily obtainable 308s to shoot out transformers from one end of the country to the other.
Timed properly that would be a ‘domino effect’ and cause larger ones to ‘collapse’/fail.
It is damn hard to replace those biggies—Spares are NOT around. Years to recover folks ..

[sauropod]

Check Dhs press release from 7/23