Yesterday, 06:50 PM
My home seems to get a lot of power outages.
We have a chest freezer in the basement, and have had several outages around 4 hours. I don't worry about those. I know we have had regular food in there for 72 hours without power and it was fine.
I have had milk in my regular freezer during a 2-3 hour outage. I checked after power was back on and everything still seemed frozen. I did use that milk soon rather than moving it down to the chest freezer for long term storage.
The weekend before I first went back to work, we took a vacation. I pumped the couple of days before we left and then took my pump and pumped while we were gone. When we got back, I was prepping the bottles for the first day of day care, and the ones from before our trip smelled off. I tossed them. Fortunately I had pumped enough over the weekend for that first day. I talked to a neighbor and found out that we had lost power for ~7 hours while we were gone!
I have a friend who stores milk at several of her friends' houses just in case of outages like that. I also have a non-breastfeeding friend that is so paranoid about outages that anytime they loose power, she tosses everything in the refrigerator, including ketchup, soda, fruit, etc. It all comes down to what you are comfortable with.