Tanker ships and quantum reactors...

[Marty Ward]

You can build a space station everywhere but at least it cost you resources and then you have to scrap it or pay maintenance. Also, your fleet will advance a little bit slower.
It,s definately a powerful component, once you have it you don't even need to build a resupply facility and can scrap all existing ones. No other component give you this benefit.
I think it should either be toned down in effect or made more expensive and larger for the bonus it gives.