Talk:Portal:Buildings/@comment-74.82.64.160-20130730043741/@comment-4958846-20130804222231

On the a preview (think it was the UNIT CUSTOMIZATION preview) There was a level 7 CC but it costed 2 M Thorium and 48M Metal & Oil

What you got for upgrading was 5 sec (like every other Thorium upgrade)

An 2nd Thorium Vault

Level 5 Defense Platforms

No More Power Plants or Defense Platforms

But that was then and when that happen kixeye said there were "testing it out" so they may add level 7 cc with more Power or Defenses.