this is sort of true, it depends on the array, but from what i understand, unless you’re doing an experimental array, it’s most common to just use fixed axis mounted panels, it’s much cheaper and more cost effective that way. Ideally you would use a tracking array, which is better, but more complicated, and requires significantly more maintenance and investment. Single axis tracking arrays might be a clever solution to this problem though.

Regardless, it’s not relevant to the grid inertia problem at hand.