Mine was off for 23 hours. The internet just came back up. One batch of shipped egg had just finished hatching before the outage but there was another shipped batch to hatch this Saturday. My incubator pulls over 2000 watts so an inverter was out of the question. My deep freezer/brooder never dropped below 80 so the newborns were good. The ones out under a heat lamp needed help. I pulled my truck back there an hooked the heat light threw a inverter to my truck. I've lived here my whole life an this is the first outage over 6 hours I've ever had.