OK, I was mistakenly assuming those were ac type fans. After doing a little research, it seems that you can get most of the necessary dc items a person would need for a coop. Definitely looks like solar is in my future.No inverter needed. This solar panel comes with a controller, which regulates the voltage. This will work without a contoller but the life span of the fans will likely be shorten as the voltage will be too high when it is really sunny.
The solar panel/contoller put out 12 volts and the fans use 12 volts.