Good thing nobody will be in there huh.
. Lol
Luckily it's a shed that's about 40 or 50 ft away from the actual house
I went through an insulated everything... Eventually I will be adding a small air inverter air conditioner as well as some type of heat... I may just use a diesel heater.. But I imagine with it being such a small, insulated space that the heat of the inverters and batteries charging should be more than enough to keep it warm in the winter