I had 200 eggs in my incubator and every day the electric was off but I don't know for how long. Alot of the eggs never hatched.I have hatched out many eggs before without any problems. I ended up with 52 healthy chicks. Most of the ones that did hatch never stood up. They lay on their sides and just twirl around and I had to destroy them. Was this just bad or poor quaility of eggs or becauseof the electricity outage. A friend had the same problems and we were using the same type incubators and we got the eggs from the same place.