[ProfessorLayton]

Running AC lowers the dwelling humidity, so I'm not sure what you're referring to. Lower PV efficiency means some margin/overcapacity will be needed, not free but also not an insurmountable problem either. There's more energy being cast upon earth every single day than we'll ever need, and the same cannot be said for hydrocarbons.

Temperature control for livestock applies to cold climates too, so kind of a moot point to mention one and not the other.

Running AC in hot areas does not necessitate making climate change worse. Heat pumps are very efficient in cold climates too, but it doesn't change the fact that much more energy is required due to the temperature deltas being dealt with.