Only while wielding Saidin!

Thanks for the input =)

Good day all, Happy New Year! I'm very happy with my bounty hunter, but I've been rather confused as to why some of PT Gear has +Power. Anyone have any idea why we get +power on +end +aim pieces? Does +power increase both Tech / Force? I could understand it if it were like that, but since I don't really know why its there I've been switching out mods with +power to mods with +crit (despite being a tank). Could anyone shed some light on whats the with with +power? Thanks!