We had a huge storm come in and lost power for more than half of a day. That posed a problem for our new chicks. They needed light to keep them warm. My husband was super creative. He took out a propane camp light and hooked it up. They seemed to understand to just huddle around it to stay warm. Once the day warmed up outside I was able to take it out and they were fine and the power returned that evening so they could use their normal heating lamp.