Two points. First, yes, you need batteries, that kind of a given. Second, increasing the systems generation size means that you can charge batteries while also consuming power. Third, increased generation system size means that you’ll still be generating sufficient power during the rare times that southern Arizona is overcast.
You would generally want to be as energy efficient as possible though, because being off-grid does make you vulnerable to insufficient generation capacity at any given time.
Two points. First, yes, you need batteries, that kind of a given. Second, increasing the systems generation size means that you can charge batteries while also consuming power. Third, increased generation system size means that you’ll still be generating sufficient power during the rare times that southern Arizona is overcast.
You would generally want to be as energy efficient as possible though, because being off-grid does make you vulnerable to insufficient generation capacity at any given time.