1st, I would keep calm (you panic then everyone else will)
2nd: Lighting oil lamps candles or flash light. Make sure they work before hand.
3rd: Do a head count and make sure you know where everyone is or going. Check neighbors to make sure they are well (never know when you need to ban
together)
4th: Security, make sure the home is secure, lock doors, windows, gates or any other point of entry.
5th: Comms, bat. operated radio to here what is going on or for EMS to instruct you what or where to go.
6th: No matter what news you hear see #1
7th: Dont be a hero or Rambo (unless no other options are available).
8th: Keep lights low, talk soft and dont show what you not willing to loose (food, weapons, loved ones)
9th: Food, water and meds, if not already ration it out to meet your needs. Then hide drygoods out of sight just encase looters get in.
10th: I could go on, but you (OP) need to think of a emergency plan that works for you and your area. Me if the lights go out doesnt mean much Im so
far in the sticks I have to have the sun shine pumped in