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Please help with verifying or updating older sections of this article. At least some were last verified for version Pre-release.

This article is for the PC version of Stellaris only.

A Spaceport is a large space station that serves as the primary defense of inhabited planets as well as those planets' orbital construction facility. They can construct ships and modules which upgrade the spaceport itself. Spaceports can be upgraded in order to allow construction of larger ships and additional spaceport modules. A newly built spaceport has two modules slots, one of which is taken up by its defense system. Each additional level unlocks an additional module slot to a maximum of seven at level five. Each spaceport level also increases its damage and defensive capabilities.


Modules are unlocked through research, apparently often from special technologies. Some are also limited to empire with certain ethics. Modules have a wide variety of effects. For example defense, economical benefit or ship support. Certain modules are needed to exploit strategic resources.

This list is based on incomplete information and may contain errors.

Module Construction cost Construction time Maintenance Effects Technology requirement
Corvette Assembly Yards[1] 80 minerals 270 days Destroyers or Improved Spaceport
Crew Quarters[1] 80 minerals 180 days None
  • Orbit Modifier
    • Ship Upkeep: -20%
Engineering Bay[1] 80 minerals 180 days 1 energy
  • Engineering Research: +4
  • Orbit Modifier
    • Ship Repair Speed: +25%
    • Ship Repair Cost: -25%
  • Ship Modifier
    • Ship Upkeep: -10%
Fighter Squadron[2]
Observatory[3] 100 minerals 180 days 1 energy
  • Physics Research: +4
  • Planet Modifier
    • Planet Sensor Range: +50%
Orbital Sensor Arrays
Orbital Hydroponic Farms[4] Orbital Hydroponics
Solar Panel Network[3] 75 minerals 180 days None
  • Energy Credits: +3
Orbital Energy Conversion
Reinforced Hull Structure[2]

This list is based on incomplete information and may contain inaccuracies.