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This article may contain outdated information that is inaccurate for the current version of the game. It was last updated for 1.4.

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 as well as modules which upgrade the spaceport itself. Spaceports' internal framework itself can be upgraded in order to allow construction of larger ships and additional spaceport modules. A newly built spaceport has two module 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 six. 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.

Aside from building and maintaining ships, one of the main functions of spaceports is to increase an empire's Naval Capacity. This increase in imperial Naval Capacity scales with the level of the spaceport.

Spaceports can be built on any colonized world for a cost of 360 Minerals.png 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 Credits.png Energy per month. The spaceport can be upgraded, with an increasing mineral cost for each level.

Level HP Armour Construction rate Naval capacity Weapon damage Tracking Mineral Cost
1 4000 75 +0% +2 100% 0 360
2 4500 80 +20% +4 110% +2 200
3 5000 85 +40% +6 120% +4 250
4 5500 90 +60% +9 130% +6 300
5 6000 95 +80% +12 140% +8 350
6 6500 100 +100% +15 150% +10 400


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. As of 1.3, there are no longer any modules which can be built that rely on strategic resources to function.

Note that the Fleet Academy and the Engineering Bay's upkeep reduction only provide their benefits to ships produced at that specific Spaceport. You can however upgrade ships made at spaceports without by upgrading at a station that has the relevant modules.

Module Cost Time Maint. Effects Requirements
Level Technology
Solar Panel Network.png Solar Panel Network Minerals.png 75 Time 180 Energy Credits.png Energy production: +3 1 Tech solar panel network.png Orbital Energy Conversion
Crew Quarters.png Crew Quarters Minerals.png 100 Time 180 Orbit Modifier
Ship Upkeep: −10%
1 Tech doctrine fleet support.png Doctrine: Fleet Support
Observatory.png Observatory Minerals.png 100 Time 180 Energy Credits.png 1 Planet Modifier
Planet Sensor Range: +50%
Physics Research.png Physics Output: +10%
Society Research.png Society Output: +10%
Engineering Research.png Engineering Output: +10%
1 Tech orbital sensor array.png Orbital Sensor Arrays
Engineering Bay.png Engineering Bay Minerals.png 100 Time 180 Energy Credits.png 1 Orbit Modifier
Ship Repair Speed: +50%

Ship Modifier

Ship Upkeep: −5%
1 Tech doctrine fleet support.png Doctrine: Fleet Support
Orbital Hydroponic Farms.png Orbital Hydroponic Farms Minerals.png 100 Time 180 Energy Credits.png 1 Planet Modifier
Food.png Food: +3
1 Tech orbital hydroponics.png Orbital Hydroponics
Synchronized Defenses.png Synchronized Defenses Minerals.png 150 Time 180 Energy Credits.png 1 Station Modifier
Fire Rate: +25%
Weapons Damage: +25%
1 Tech synchronized defences.png Synchronized Defenses Tech
Corvette Assembly Yards.png Corvette Assembly Yards Minerals.png 100 Time 270 Energy Credits.png 1 Spaceport Modifier
Corvette Build Speed: +25%
Corvette Build Cost: −10%
2 Tech spaceport 2.png Improved Spaceport
Destroyer Assembly Yards.png Destroyer Assembly Yards Minerals.png 300 Time 360 Energy Credits.png 1 Spaceport Modifier:
Destroyer Build Speed: +25%
Destroyer Build Cost: −10%
4 Tech spaceport 4.png Advanced Spaceport
Fleet Academy.png Fleet Academy Minerals.png 400 Time 360 Energy Credits.png 4 Ship Modifier:
Fire Rate: +5%
Accuracy: +3
Tracking: +3
3 Tech interstellar fleet traditions.png Interstellar Fleet Traditions
Cruiser Assembly Yards.png Cruiser Assembly Yards Minerals.png 400 Time 360 Energy Credits.png 3 Spaceport Modifier:
Cruiser Build Speed: +25%
Cruiser Build Cost: −10%
5 Tech cruiser yard.png Standardized Cruiser Patterns
Orbital Mind Control Laser.png Orbital Mind Control Laser Minerals.png 400
Influence.png 10
Time 360 Energy Credits.png 5 Planet Modifier
Ethics divergence: −30%
4 Tech will to power.png Will to Power
Battleship Assembly Yards.png Battleship Assembly Yards Minerals.png 500 Time 180 Energy Credits.png 4 Spaceport Modifier:
Battleship Build Speed: +25%
Battleship Build Cost: −10%
6 Tech battleship yard.png Standardized Battleship Patterns
Game concepts
Governance EmpireGovernment typesPoliciesEdictsLeaderFactionsPopulation
Exploration ExplorationMapSpeciesAnomalyEventsFTLFallen empirePre-FTL speciesSpaceborne aliens
Colonization ColonizationCelestial bodyEconomyBuildingsTechnologyConstructionSpaceportFleet
Diplomacy DiplomacyTradeSubject empireAlliances and federationsAI personalities
Warfare WarfareSpace warfareLand warfareOrbital bombardmentMilitary stationShip designer
Others EthosTraitsTerraformingGenetic modificationSlaveryCrisisPreset empiresEaster eggs