Yep... I just stated playing Astroneer this past week and noticed this. Then earlier today I was on the wiki and it actually said the correct value. Going based on the in game typo it seemed completely useless to get the large one.
I've just recently started playing Astroneer and am loving it, but one thing I feel would've been implemented by now is wind turbines should be on and producing power if they are connected to a vehicle and the vehicle is moving. I usually have 2 small wind turbines on my tractor/trailer setup and think about that all the time while exploring.