My cats never liked power outages, and thankfully, here in Southern California aka Earthquake Country, we haven't had that many. They didn't like them because prior to laser surgery in 1998, I was extremely nearsighted and unintentionally stepped on the cats' tails or paws when I didn't have my glasses on or my contacts in.
Now, with much better vision, my cats equate power outages with more mommy time, because the TV and computer don't work. They're used to the sound of the can opener (guaranteed they'll come running, even when the food is not for them), so I had to track them down when I used a manual can opener to give them dinner.
What they don't like is thunder. Thunderstorms are rare in my part of the country, but we do get them. Nine years ago, there was a very loud clap of thunder right over my apartment, and my cats jumped in unison from one side of the bed to the other, then dove under the covers to be with mom.