Our village has 2 power lines - the main one covers the village, and the other one goes to an industrial area but also covers some houses on the outskirts on that side. The main one comes from the local power plant, the industrial from a separate power plant a distance away. (I think the industry itself actually has a link to the village one too as a backup...).
Anyway, the local power plant had an unexpected shutdown on Christmas Day about 20 years ago. Having lived through the 80s and frequent power outages, my DPs had a cooker powered on a gas bottle as a spare. And they had already done up the kitchen so had an electric cooker with 2 ovens for everyday use. So that day, as we had power, DM cooked 4 turkeys, (1 had to be chopped up to fit in the smallest oven) - 3 of them being for neighbours with no power from other parts of the village. I think she also sent them all home with a few roast potatoes each as well, and steamed veg to 2 (the 3rd had camping gear so could cook on a ring, just not an oven).
Luckily, we only ever ate in the evening anyway so our turkey went in at lunchtime once the neighbours had left from the annual mid-morning post-mass drinks gathering (oven was needed for "nibbles" for those guests before then!). But it was a later than usual finish to that gathering so cooking could finish (as the men tended to drive, a few ladies were rather less able than usual to finish off their preps once home, both due to more drinks than usual and no soakage as turkeys took precedence over nibbles for oven space - we did hear 1 teenage daughter put her DM to bed and finished it herself 
), and we ate much later than usual.
There was also the year that DSiblings opened the turkey to put into the oven, which had been kept on the counter in the cold back porch, and realised it was not edible. The mad thing is, as DM had taken our old fridge-freezer off us as a beer fridge, she had tonnes of fridge space even with the annual "Christmas Fridge" going on in her everyday fridge in the kitchen. Our old fridge had a broken handle but was otherwise perfectly functional, and we had replaced it when upgrading to a larger model - and she literally filled it with so much beer and wine that people were never going to drink, and left the turkey on the counter beside it in a "cool room" for 2 days - but probably still about 15 degrees compared to 20+ in the rest of the house, so it was totally totally off! She wasn't told for another few hours, by which time the turkey was in the food bin, BBQ coals were lit and ready to cook on, enough steak for everyone had been thawed from the freezer and DSibs had plied her with wine...