Hopefully they will be just fine.

That said... power outages are an unfortunate fact of life in my area. We have above-ground lines so a winter ice storm or summer squall can knock us offline for a few days. While I don't have a whole-house generator, I did pick up one that can handle keeping my food and the snake food cold, and/or the snakes and incubator at appropriate temperatures. When I added up the potential for snakes + food losses - none of which would be covered by insurance - buying one made financial sense.