I know there are some posts about this but I have the tech for the +150 cloak planet structure and I was wondering if it was even worth it to put this on planets?
If cloak works like I think then +150 is almost nothing since almost everyone has over 600 scan.

first, not everyone keeps scan modules on their ship all the time... esp if they can still drop themselves down to 1 scan so that RTCs don't show up on the BT

second, 150 cloak vs 600 scan will give the planet a 25% chance of hiding even if it was located on the first roll of a planet scan

600 scan?? that's normal running for a low rank.. but planet scanning is way different.. 6000+ scan would be very conservative for anyone over rank 300 doing a single planet scan run.

That's what I mean. Even if I assume 4k scan which is about what I had last time I scanned. Then 150 is like less than 5% chance of staying cloaked if someone scans it right? If so that's useless vs another defensive structure.

aye, 150c = 3.75% hidden to 4K scan, 96.25% visible to 4K scan

A long standing debate. For myself (and the majority feels the same I think).. the size of cloaking structures vs the amount of cloak given is not good enough when compared to the def/atk structure and what they give. I go atk/def in lieu of cloak except for special cases.. and most of the cloak in those cases is done thru artifacts... and passive planet abilities (again more artifacts).

There is a tradeoff though, cluster missiles make short work of def structures. On worlds that I think someone might think are good enough to drop them on, I make sure there's a decent stealth rating on it. research stealth structures are so sadthough, you don't get even a decent value per space used until the +250 ones, which I think are 5 space. There's tons of artifacts that do close to 100 per space.