So, I recently got, like yesterday, IC2 for tekkit since IC2's solar arrays sounded more efficient than the solar panel that comes with tekkit. So I downloaded it, and the only solar array that shows up is the basic solar panel cube. So I looked up recipes for the others, Using a lv transformer int he middle I put the base solar panels that come with IC2 around it nothing. Tried the same for the mv and hv. So I went into creative mode and tried to look them up, they weren't there. Seriously, the solar arrays aren't showing up anywhere in my game, even when I use search in creator mode, or the search in the not enough items mod that comes with tekkit, they don't show.
Are they an add on or something I have to get separately?