There is a really easy solution that is not that costly to protect your collection in case of power outage http://www.amazon.com/Mr-Heater-F232...s=buddy+heater

Now if you have a single animal simply use heat packs used for shipping.

While issues are rare in GA power outages are a possibilities and while BP can do fine without a hot spot your animals do need adequate ambient temps.

I have a generator and a buddy heater hooked to a large propane tank, never had to use either but it's a good idea to be prepared when you have a large collection.