I live in Devon in a rural area and we usually get at least 1 power cut every winter so we are used to it and always have torch batteries, candles etc, and I also have a gas stove for heating soup etc if I need to, but we usually survive on sandwiches and cereal. Food is food whether hot or cold.
I wouldn't have any heating at all, as the oil boiler needs electricity to run, but I do have an Oodie and plenty of blankets.
I have Sho bottles that keep water hot all day, so if we have planned cuts I will be filling them with coffee. Anyone with babies could use them to make bottles up. They really do stay hot for hours.
My main problem will be that as I work from home, I could have 3 hour stretches with no power, meaning that I literally can't do anything, and there are always deadlines with month ends and quarter ends etc.
Also, this is now my busiest time of year, and it would be horrendous as an accountant to get power cuts in Dec/Jan.
At least with planned cuts you can prep everything, charge phones/tablets/power banks etc .