[Myrddin]

The big 750KV transformers are 3 years ARO before shipping. Most require very special shipping via ship, rail and huge trucks. A .308 round top and bottom would empty the oil and burn a transformer very quickly. A solar EMP (Carrington style) would take out most northern tier transformers and we don't have a set of backups manufactured to replace them.

[hadaclueonce]

750 kv?

I think you were thinking 750 MVA.

Just a guess