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. Spaceports can be built directly from colonized worlds, without the need for a construction ship. It 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 another module slot to a maximum of seven at level five. Each spaceport level also increases its damage and defensive capabilities. Ships in orbit around a spaceport have a reduced upkeep cost of -25%. This reduction can be increased by some modules. HP by level 4000/4500/5000/5500/6000/6500. Base armour by level 75/80/85/90/95/100. Increases ship build speed by level 0/20/40/60/80/100%
Aside from building and maintaining ships, one of the main functions of spaceports is to increase an empire's Naval Capacity. Each spaceport built increases Naval Capacity by level: 2/4/6/9/12/15
Spaceports can be built on any colonized world for a cost of 360 Minerals (though ruler traits can make them cheaper) and take 12 months to build. Once built, they have a base maintenance cost of 3 Energy per month.
Modules are unlocked through research. Some research options are limited to empires 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.
Note that the Fleet Academy only provide their benefits to ships produced at that specific Spaceport.
|Solar Panel Network||75||180||−||Energy production: +3||1||Orbital Energy Conversion|
|Crew Quarters||100||180||−||Orbit Modifier
||1||Doctrine: Fleet Support|
|Observatory||100||180||1||Planet Modifier||1||Orbital Sensor Arrays|
|Engineering Bay||100||180||1||Orbit Modifier
|1||Doctrine: Fleet Support|
|Orbital Hydroponic Farms||100||180||1||Planet Modifier||1||24px Orbital Hydroponics|
|Synchronized Defenses||150||180||1||Station Modifier
||1||Synchronized Defenses Tech|
|Corvette Assembly Yards||100||270||1||Spaceport Modifier
|Pioneering Terminal|| 300
|Destroyer Assembly Yards||300||360||1||Spaceport Modifier:
|Fleet Academy|| 400
||3||Interstellar Fleet Traditions|
|Cruiser Assembly Yards||400||360||3||Spaceport Modifier:
||5||Standardized Cruiser Patterns|
|Orbital Mind Control Laser|| 400
||4||Will to Power|
|Battleship Assembly Yards||500||180||4||Spaceport Modifier:
||6||Standardized Battleship Patterns|