https://www.tractorsupply.com/tsc/catalog/electric-fencing
AC is the kind that gets plugged into an outlet. DC would be anything running on batteries.
Solar charges batteries and is subject to failing with days of heavy cloud cover or snow on the charging panel.
We would all like to help you figure out the predator proofing.
We need more details though.
What is the coop made of?
What is the run made of?
Is there a roof of wire or solid material on the run?
Can you add hot wire around it?
(It comes in solar powered too)
Such a devastating loss! I am so...