I love this so much, my only two critiques would be that the kitchenette needs a shade from the sun and rain, and it isn’t obvious where the battery is housed.
Yeah the solar panel needs sunlight but I'll bet the fridge doesn't have to work as hard if it's not in direct sunlight all day. And it'd protect it from the rain. I think they usually run these inside a library or co-op where someone will tend it and keep an eye on it.