Same, in the centres I worked at we would close if the power stayed off for a long period of time. I think after 20-30 minutes the parents were called.

It's tough though because you never know how long the power will be off for.

I likely wouldn't close unless it was due to something major. I'd phone the parents and let them know though. Being in a home without power is a bit different than centres. I have blankets, food, water etc that would sustain us for the day.

Good question, I'm interested in reading what others do