Random Thoughts

[Succubus#2]

Not until scared hungry people hear it or smell it. Those people will assume, not unreasonably, that you are also well stocked with food and water and they will come and take it.
No doubt you'll manage to pop a few caps in their asses but before the day is out you and your family will likely be dead.
A better idea would be stay in the cellar with a few candles eating you stockpile of food and wait till the power returns.

A generator is a better bet if you live in a rural area that gets damn cold winters...or at least did in the past.

I have spent five days in a freezing house with no power.  A generator would have been much appreciated.

For random outages while society is still functioning then a generator is indeed a bloody good idea but in a universal power outage following some sort of catastrophy, not so much.