Are you really running ac off of solar? How much did that setup run you?
I just ran misters this last summer. The chickens seemed to like that just fine, much cheaper than trying to cool with fans and or a.c. units.
This sounds like a bad idea to me, let me explain really quickly here.
Solar may be a good idea if your coop is far from your house and you don't want to run power to it. However, if you can run power, or already have power run, and just want to save money, solar for just the coop isn't a...