each one gives like 0.1 per installed so if you do both you get a nice 0.2 which is not super good but not super bad especially if more become available and we get another 5 plats somewhere. Sadly at current they are mostly useless.
I mean its fine we just have no where it will be out side a while or any trips long enough to get any noticeable gain, and only like one path uses little enough energy to really be effected
