On having done some research online, there is at least one upgrade only available on store items. According to sims3.wikia.com, there is a "more efficient" upgrade available on solar panels and windmills. At least one of these, the solar panels, is definitely available for free in the store in either the toyota prius city-friendly pack or the toyota prius archive pack (I have both and am not sure which contains the solar panel, but both packs are free in the store, in branded content).
I am not sure how this will affect my number of upgrades available or whether it will change my precentage, and as store content seems to be partially banned, I wanted to know how this affects my game playing. I don't want to have to uninstall the content, but will if I have to.
Thank you!