I'm (not GP) in the Chicago burbs and expect to lose power 1-3 times a year. Usually it's for less than twelve hours but last year it was out for three days straight. Most recent outage was ~10 minutes long a couple weeks ago - I still haven't set the oven clock.

The cause around here is usually storm + trees + above ground power lines, plus a low enough population density that you're not top priority for the utility company.