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ISRU Chemical Plant Processes
westlakem edited this page Oct 28, 2026
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This reference covers the Chemical Plant and full-size ISRU configurations in an RP-1 / Realism Overhaul installation. Resource rates are in KSP resource units per second (usually L/s). Converter rates are per process-capacity unit; multiply by the controller's capacity for the configured total rate.
The part unlocks are separate from the process requirements: the Chemical Plant part requires spaceExploration, and the ISRU part requires lifeSupportNF.
| Process or setup | Required tech | Inputs (units/s) | Outputs (units/s) |
|---|---|---|---|
| Water Electrolysis | Long-Term Life Support and ISRU (longTermLifeSupport) |
ElectricCharge: 0.178486 Water: 0.000011248 |
Hydrogen: 0.014 Oxygen: 0.007 |
| Sabatier Process | Advanced Life Support and ISRU (advancedLifeSupport) |
ElectricCharge: 0.8 CarbonDioxide: 0.0172683775 Hydrogen: 0.064721246 |
Water: 0.0000259988 LqdMethane: 0.0000271941 |
| MOXIE | Advanced Life Support and ISRU (advancedLifeSupport) |
ElectricCharge: 0.24 CarbonDioxide: 0.01409853921 |
Oxygen: 0.007092198582 |
| Plasma Methane Pyrolosis | Advanced Life Support and ISRU (advancedLifeSupport) |
ElectricCharge: 0.7 LqdMethane: 0.0000271941 |
Hydrogen: 0.00447458318 |
| Molten Regolith Pyrolosis | Long-Term Life Support and ISRU (longTermLifeSupport) |
ElectricCharge: 1.444247885 Regolith: 0.0000027667584 |
Oxygen: 0.007 |
| Waste Incinerator | Efficient Life Support and ISRU (efficientLifeSupport) |
Waste: 0.0001082667 Oxygen: 0.1589194249 |
CarbonDioxide: 0.1497439605 Water: 0.0000131259 ElectricCharge: 0.005 |
| CO2 Filter (capture setup) | Long-Term Life Support and ISRU (longTermLifeSupport) |
Atmospheric CarbonDioxide: up to 0.043 ElectricCharge: 1.5 |
CarbonDioxide: up to 0.043 |
| Process or setup | Required tech | Inputs (units/s) | Outputs (units/s) |
|---|---|---|---|
| SE-RWGS | Near Future Life Support and ISRU (lifeSupportNF) |
ElectricCharge: 38.0630714 CarbonDioxide: 0.8433582486 Hydrogen: 1.044616251 |
LqdMethane: 0.0008827766639 LqdOxygen: 0.001185518392 |
| Molten Regolith Pyrolosis | Near Future Life Support and ISRU (lifeSupportNF) |
ElectricCharge: 1.444247885 Regolith: 0.0000027667584 |
Oxygen: 0.007 |
| HTP Synthesis | Advanced Life Support and ISRU (advancedLifeSupport) |
ElectricCharge: 0.1 Hydrogen: 0.1162138813 Oxygen: 0.084 |
Water: 0.0000106018366 HTP: 0.00009541652939 |
| Haber-Bosch Process | Efficient Life Support and ISRU (efficientLifeSupport) |
ElectricCharge: 0.3685524471 Hydrogen: 0.2706260197 Nitrogen: 0.08992230669 |
Ammonia: 0.1778176725 |
| Ostwald Process | Efficient Life Support and ISRU (efficientLifeSupport) |
ElectricCharge: 0.1 Oxygen: 0.084 Ammonia: 0.04683803641 |
Water: 0.00005716845 NTO: 0.00006710384483 |
| Hydrazine Production | Efficient Life Support and ISRU (efficientLifeSupport) |
ElectricCharge: 0.01679760881 Ammonia: 0.1778176725 HTP: 0.00009541652939 |
Water: 0.0001446909606 Hydrazine: 0.0001281595396 |
| CO2 Sorption Pump (capture setup) | Near Future Life Support and ISRU (lifeSupportNF) |
Atmospheric CarbonDioxide: up to 4.2 ElectricCharge: 1.8 |
CarbonDioxide: up to 4.2 |
| Water Electrolysis | Near Future Life Support and ISRU (lifeSupportNF) |
ElectricCharge: 0.178486 Water: 0.000011248 |
Hydrogen: 0.014 Oxygen: 0.007 |
| Sabatier Process | Advanced Life Support and ISRU (advancedLifeSupport) |
ElectricCharge: 0.8 CarbonDioxide: 0.0172683775 Hydrogen: 0.064721246 |
Water: 0.0000259988 LqdMethane: 0.0000271941 |
The Liquifier part unlocks at Advanced Life Support and ISRU (advancedLifeSupport). The Liquefaction Array uses the same setups and unlocks at Near Future Life Support and ISRU (lifeSupportNF).
| Process or setup | Required tech | Inputs (units/s) | Outputs (units/s) |
|---|---|---|---|
| LOX to GOX Converter | Early Life Support (earlyLifeSupport) |
LqdOxygen: 0.0000154599 ElectricCharge: 0.00467 |
Oxygen: 0.0125104279 |
| GOX to LOX Converter | Advanced Life Support and ISRU (advancedLifeSupport) |
Oxygen: 0.0504 ElectricCharge: 0.334 |
LqdOxygen: 0.00006228235886 |
| LH2 to GH2 Converter | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdHydrogen: 0.001325490486 ElectricCharge: 0.294 |
Hydrogen: 1.044616251 |
| GH2 to LH2 Converter | Advanced Life Support and ISRU (advancedLifeSupport) |
Hydrogen: 0.042 ElectricCharge: 0.08835372 |
LqdHydrogen: 0.00005329287227 |
| LCH4 to GCH4 Converter | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdMethane: 0.0000469913 ElectricCharge: 0.00760 |
Methane: 0.027894 |
| GCH4 to LCH4 Converter | Advanced Life Support and ISRU (advancedLifeSupport) |
Methane: 0.027894 ElectricCharge: 0.06127 |
LqdMethane: 0.0000469913 |
| RP-1 Burning LOX Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.125416 RP-1: 0.000998017 |
Oxygen: 100 |
| RG-1 Burning LOX Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.125416 RG-1: 0.000966867 |
Oxygen: 100 |
| Syntin Burning LOX Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.125416 Syntin: 0.000946416 |
Oxygen: 100 |
| Ethanol75 Burning LOX Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.125679 Ethanol75: 0.00198396 |
Oxygen: 100 |
| CH4 Burning LOX/LCH4 Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.0740491 LqdMethane: 0.0709100 |
Oxygen: 58.74 Methane: 41.26 |
| H2 Burning LOX/LH2 Vaporizer | Advanced Life Support and ISRU (advancedLifeSupport) |
LqdOxygen: 0.0340316 LqdHydrogen: 0.0964855 |
Oxygen: 26.31 Hydrogen: 73.69 |
- Atmospheric CO2 filter/pump setups harvest CarbonDioxide from the local atmosphere rather than consuming stored CarbonDioxide. Their listed capture rates are configured base rates and may be limited by atmospheric conditions; ElectricCharge is consumed at the listed rate.
- The rates above are the recipe rates from the installed RO profile, not a promise of the exact vessel throughput. ProcessController capacity scales converter rates, and the active setup and available resources determine actual operation.
- MOXIE discards carbon monoxide. Methane pyrolosis has its Ethylene output disabled. Molten regolith pyrolosis discards the remaining metal.
- Resource names match the installed Kerbalism RO profile.
ElectricChargeis included as an input or output where the recipe consumes or generates power. - Process tech requirements are shown separately from the parts' own unlock requirements.
- Process setups and part requirements: GameData/KerbalismConfig/System/ISRU.cfg
- Resource recipes: GameData/KerbalismConfig/Profiles/ROKerbalism.cfg
- RP-1 tech node names: GameData/RP-1/Tree/RP0TechTree.cfg