DSP Late-Game Factory Expansion Guide (v0.10) - Scale From 30 to 300 Science Per Minute

Scale your Dyson Sphere Program factory from mid-game to endgame. Complete guide to transitioning from a single-planet base to a multi-planet production empire, with blueprint strategies, bus design, and logistics optimization for 300 SPM.

Short answer: Do not build everything on one planet. Designate each planet for one purpose: smelting, component production, or science. Run Mk.III belts between clustered assembler groups. Use ILS for cross-planet transport of intermediate products. The bottleneck is always either Iron Ore throughput or Hydrogen supply - build 3x more of both than you think you need.

Scaling from 30 SPM to 300 SPM is not about building bigger factories. It is about building different factories. The single-planet approach breaks down around 60 SPM. Beyond that, you need a distributed multi-planet production network.

The Multi-Planet Architecture

Planet Specialization

Assign each planet a single production role:

Planet RoleBuilt OnShips OutShips In
Smelting WorldHigh-ore planetIron, Copper, Steel, Titanium IngotsNothing (mine locally)
Component WorldAny temperate planetProcessors, Circuit Boards, Magnetic CoilsIngots from Smelting World
Science WorldHigh-wind planetScience MatricesComponents from Component World
Power WorldInside Dyson SphereAntimatter Fuel RodsNothing (local production)
Mining OutpostOre-rich planetRaw oresWarpers only
**Rule of thumb:** If a planet needs more than 3 different imports, you are over-complicating it. Each planet should import 1-2 raw materials, process them, and export 1-2 finished products. This keeps logistics simple and vessel routes predictable.

Scaling Production Modules

Build production in identical, repeatable modules. Each module should produce exactly the amount needed for 30 SPM of one science type:

ModuleInput BeltOutput BeltBuildingsArea
30 SPM Blue1 Mk.I Iron + 1 Mk.I Copper + 1 Mk.I Silicon1 Mk.I Blue Science6 smelters + 3 assemblers~20 tiles
30 SPM Red1 Mk.I Coal1 Mk.I Red Science3 refineries + 3 assemblers~15 tiles
30 SPM Yellow1 Mk.II Oil + 1 Mk.I Iron1 Mk.I Yellow Science4 refineries + 6 assemblers~30 tiles
30 SPM Purple1 Mk.II Titanium + 1 Mk.II Steel1 Mk.I Purple Science8 assemblers + 4 chem plants~40 tiles
30 SPM Green2 Mk.II H2 + 1 Mk.II Graphene1 Mk.I Green Science12 assemblers + 6 colliders~50 tiles

mkii-belt Mkii belt
assembler-mkiii Assembler

Build each module 10 times for 300 SPM. Place them side by side in a row, fed by a main bus of raw materials.

The Main Bus Design for 300 SPM

A main bus carries bulk raw materials past all production modules:

Bus LaneMaterialBelt TypeItems/min
Lane 1Iron OreMk.III (1080/min)720
Lane 2Copper OreMk.III360
Lane 3CoalMk.III180
Lane 4Energetic GraphiteMk.III360
Lane 5Silicon OreMk.III180
Lane 6Titanium OreMk.III240
Lane 7SteelMk.III360
Lane 8Refined OilMk.III240

Build the bus 2 tiles wide between lanes for power poles and sorters. Leave 10 tiles on each side for assembler clusters. The bus should run east-west across the planet's equator.

Bus bottleneck warning: At 300 SPM, the iron ore bus lane needs 720 items/min. A single Mk.III belt carries 1080/min - enough margin. But if you add more modules later, upgrade to a 2-belt iron lane. Smarter is to build a second smelting planet and pipe iron from both sides.

Blueprint Library for Rapid Expansion

Build a library of reusable blueprints:

BlueprintBuildingsConnectorsPurpose
4x Smelter Array4 smelters1 input belt, 1 output beltOre smelting
4x Assembler Block4 assemblers2 input belts, 1 output beltComponent assembly
2x Chemical Plant Block2 chem plants2 input belts, 1 output beltChemical processing
ILS In/Out Hub1 ILS + 5 belts1 input tower, 1 output towerLogistics hub
Power Substation4 fusion plants + 16 batteriesPower pole connectionsStable power supply

Each blueprint should snap to a grid. Place them side by side to build a factory in minutes instead of hours.

Common Scaling Pitfalls

The Hydrogen Wall

At 150+ SPM, Hydrogen consumption exceeds 1000/min. No single gas giant supplies this. You need:

  • 40+ orbital collectors across 3 gas giants
  • A fleet of 20+ Logistics Vessels dedicated to Hydrogen transport
  • Thermal power plants burning excess Hydrogen as buffer

The Mineral Depletion Cliff

At 200+ SPM, your starting planet veins deplete fast:

  • Iron ore: ~8 hours per million units at 200 SPM
  • Copper ore: ~10 hours per million units
  • Titanium ore: ~15 hours per million units

Build off-world mining outposts on 3+ planets before hitting the depletion cliff. Use Vein Utilization research aggressively - aim for level 6 before scaling past 100 SPM.

Summary: Scaling Roadmap

SPM TargetPlanets NeededTotal MinersTotal ILSPower Required
30 SPM1 (starting planet)60410 MW
60 SPM2 (home + 1 outpost)1201030 MW
120 SPM3 (home + 2 outposts)2402080 MW
300 SPM5+ (distributed)60050250 MW
Build modules
Create reusable 30 SPM blueprints for each science tier
Distribute planets
Assign roles: smelting, components, science, power
Scale bus
Upgrade main bus to Mk.III belts before adding more modules
Expand mining
Build 3+ off-world outposts before your home planet depletes
Monitor hydrogen
Watch hydrogen supply - it is always the first bottleneck to hit

Before scaling, make sure your DSP Research Lab Guide covers your science foundation.