yep generators are best if you have frequent problems with outages. A thick blanket wrapped tightly around the incubator is all you need for outages under 8 hours or so. That's all I do, just never , ever open it, leave it wrapped at all times. The air temp in the incubator will fall way faster that the internal temp of the egg, the shell acts like an insulator for them. Also if they are over a week or so in development, they will generate some heat on their own. This all I ever do, except for hurricane outages, and never lost a developing chick. Actually unplugged one to candle them, needed the outlet, got side tracked, left it off for 24 hours before I caught it, though for sure they were all done for, it was full too, 100+ eggs. Everyone hatched still. So small outages are as big of a worry as people think. Though always best to be safe than sorry.
My luck was 100 eggs, 2/3 developed, they made their own heat to a degree in that case.
