Enough for the entire grid? There are some amount of reserves on hand (eg drunk runs into a telephone pole), but nothing that could replace a targeted attack with the explicit goal of taking out the most vital infrastructure.
And those pole mounted transformers are tiny. The big ones require special transports and can weigh a few hundred tons. Some are so large they are best transported via boat if possible.
Enough for the entire grid? There are some amount of reserves on hand (eg drunk runs into a telephone pole), but nothing that could replace a targeted attack with the explicit goal of taking out the most vital infrastructure.
And those pole mounted transformers are tiny. The big ones require special transports and can weigh a few hundred tons. Some are so large they are best transported via boat if possible.