I find it almost impossible to believe that the government hasn't take similar precautions with all of our electrical power. Even IF the government hadn't done anything then the electric companies aren't stupid. For every minute they're down they're losing massive amounts of money. They would protect it just to preserve their capital.
I honestly believe this is a bunch of hookum. I worked on computer systems in the Air Force that were built in the 60's and they had EMP circuits that would allow them to come up very quickly after a nuke/emp attack.Electronic devices from the 60s were naturally less sensitive to EMP than modern electronics. During the cold war, there was a concern that Russian military aircraft would survive much better than American planes because the Russians used vacuum tubes where we were using transistors and integrated circuits.I find it almost impossible to believe that the government hasn't take similar precautions with all of our electrical power. Even IF the government hadn't done anything then the electric companies aren't stupid. For every minute they're down they're losing massive amounts of money. They would protect it just to preserve their capital.
Also, the military has been taking this problem seriously for almost 50 years. They are willing to spend the extra money to protect against it.
The electric companies aren't going to spend the extra money ($20 billion was the estimate I heard) against this problem on their own initiative.