An EMP would be devastating. There are so many people reliant upon medical devices that need energy. I doubt they have the back-up energy to run them. Medical services will greatly suffer.
I have always felt an EMP is the first logical step in the next war. A simple pulse, knocks out all of our electrical grid and equipment. We are stranded with no electricity for gas pumps, no means to manage inventory, cash flow, and NO back-up systems for the financial complex.
EMP is one reason we went to a gas range. Well, propane; which is also our heat source.
I agree with Tolik. People would need to adapt to survive. We would go back 100 years. Hand washing your socks! Are you ready?
I think I was born in the wrong century.