Triage would have to conducted on a national scale. In a just in time society we would pay dearly for a society which depends on regular deliveries.
This is a picture of the type of rail car used to deliver main transformers. You'll need refineries to operate to produce fuel to power railroads. You'll need power plants to operate refineries. You'll end up with innumerable catch 22 situations.
The transformer goes between the two rail car halves. These are not the little transformers you see at substations.