I agree with TBG--you should be just fine. I live in an area with frequent, sometimes long power outages. If I am home when it happens, I can crank up the generator. But if I am not, they can get weird dark periods when they shouldn't.
I am trying to figure out some kind of emergency lighting thing. I want something where the lights go on when the power goes out--like the emergency lights they use in stairwells. However, I don't want them to go on if we have a power outage during the dark period. And I haven't figured out a way to make the emergency lights only go on when I want them to...