My husband and I are researching the possibility of building a solar panel and using it to heat our coop during the day. We don't have electricity in our coop, so we'd have to run an extension cord from the house outside to the coop. But I have concerns on keeping an electric heater out there for fear they could get burned by it, if they got to close to it. Also I can just imagine how high my electric bill would be having a hearter on 24/7 for the entire winter. I have found some pretty creative, cheap way to build your own solar panel using aluminum cans (like soda cans). Also some designs using other materials as well. Does anyone use solar heat in their coops? Just curious how its working for you? I think its a great concept, and with sites like craigslist and freecycle, I think it would be fairly inexpensive to do. Here is a link to a site that uses other materials but still looks pretty easy http://mobilehomerepair.com/article17solar.htm Here is a link to a site that uses the aluminum cans - its a video step by step - http://www.youtube.com/watch?v=OqxQFWaKN2Y Please let me know your thoughts.