honestly, i think the TEC Colony Cap special secondary is pathetic... i mean, with research, extractors are cheap as scrap.
More in-line with TEC philosophy is the Advent or Vasari (i cant remember which) ability where upgrades are cheaper for a period of time after colonising... heck, rolling the two into one and giving the Advent (im sure its them, but dont quote me) something else... like a free broadcast center and some defenses (or at least make them free until they are built, like a first cap ship) would be much better.
but as it stands, the ability sucks, and should be re-thought