No, using Power Generator is useless to that holo, and the other, second new one. Those Holoprojectors are for capital ships, destroyers, cruisers... but not for fighters
If you don't know which "use" is of them, and you didn't found them... means sombody told you about them They are at the Venn-Inner Core entrance, and 3 other systems after Venn
No, things are not like in 1.7 anymore, about the holos. They consume more energy now, neither a freighter with a powergen can't hold it, or a VHFighter as asked above