Megastructure
Dyson Sphere
Sphère de Dyson
Description
A Dyson Sphere fully envelops a given star, converting all solar output directly to 
Energy Credits.
Where to build it
Must be built in a system with a single star and no habitable planets.
- Cannot build outside Empire borders.
- Cannot build more than one Dyson Sphere.
- In order to construct a Dyson Sphere, we must upgrade an existing Dyson Swarm
- Cannot build more than two Dyson Spheres.
- Cannot build in systems that have not been surveyed.
- Cannot construct in the same system as an existing Arc Furnace
- Cannot construct in the same system as an ongoing Arc Furnace construction
- Cannot build in systems with existing colonies
- Requires Aggressive Interference Pre-FTL Interference policy to build in system with Pre-FTL Civilizations
- Cannot build around Black Holes, Neutron Stars or Pulsars.
- Cannot build this in Binary or Trinary systems.
- Cannot build due to existing Megastructure.
- Cannot destroy one of our Consecrated Worlds.
Required technologies
Construction stages
1. Dyson Sphere Site
The construction site station serves as the base for the future construction of a Dyson Sphere.
- Cost
- 1,000 Unity
- Upkeep
- 5 Energy Credits
1,800 days to build
2. Dyson Sphere Frame
The frame is the foundation for the future Dyson Sphere and does not generate any energy.
- Cost
- 5,000 Unity, 10,000 Alloys
3,600 days to build
3. Dyson Sphere: Initial
A partially operational Dyson Sphere - 25% energy generation efficiency.
- Cost
- 5,000 Unity
- Output
- 1,000 Energy Credits
3,600 days to build
4. Dyson Sphere: Medial
A partially operational Dyson Sphere - 50% energy generation efficiency.
- Cost
- 5,000 Unity
- Output
- 2,000 Energy Credits
3,600 days to build
5. Dyson Sphere: Penultimate
A partially operational Dyson Sphere - 75% energy generation efficiency.
- Cost
- 5,000 Unity
- Output
- 3,000 Energy Credits
3,600 days to build
6. Dyson Sphere
A fully operational Dyson Sphere - 100% energy generation efficiency.
- Cost
- 5,000 Unity
- Output
- 4,000 Energy Credits
3,600 days to build