Do eggs create their own heat?

[Stockwell]

Back in my Ball Python days I used to run an inverter for my closet of incubators. It automatically switches over to battery power if the hydro goes out.
This is only really necessary for guys with expensive python eggs, but even computer UPS systems can be worth the expense if you're hatching high end stuff, although most UPS' wont last long enough without some good size extra gel cells, which are quite expensive.

I once had a 7 hr power failure in the dead of winter.. That was scary..
I moved all the herps to the bathroom, and put wet towels under the doors, and ran the gas heated hot water into the tub via the shower.
The bathtub acted like a heat reservoir, and filling it via the shower was quite effective at quickly warming the air.
Every hour or so, I would partially drain the tub, and run the shower again.
The house got down into the 40's but I managed to keep the bathroom in the 70's.

If the hot water approach wasn't successful, I was prepared to bag up all the snakes and put them in the car.
I also was prepared to run my furnace gas valve transformer off my incubator backup, connected to my car battery in the driveway.
I wouldn't have had enough current to run the blower, but I could convection heat the house without the blower. It would help quite a bit. It happened accidentaly once, when my blower seized. It was several days before I noticed the blower wasn't running. All the duct tape adhesive had melted and the duct tape was all on the basement floor. Thats also when I discoverd my furnace had been incorrectl wired. There was high heat limit switch, but it didn't even have wires attached