# Biomass Power - Stage 4 (technology) internal name `biomassplant-mk04` · tier 8 (pY science pack 4, [tier 8](https://factorio.kalzumeus.com/tier/8.md)) HTML page: https://factorio.kalzumeus.com/tech/biomassplant-mk04/ ## Cost 3300 units of (1 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 2 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 3 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 6 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 10 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 20 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 30 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 60 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 10 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 450 s each. ## Requires (3) - [Biomass Power - Stage 3](https://factorio.kalzumeus.com/tech/biomassplant-mk03.md) - [Non Renewables - Stage 4](https://factorio.kalzumeus.com/tech/nonrenewable-mk04.md) - [Renewables - Stage 4](https://factorio.kalzumeus.com/tech/renewable-mk04.md) ## Leads to (0) - none ## Unlocks (4 recipes) ### Hot Molten Salt (`biomass-molten-salt-04`) - 20 s · tier 8 - Ingredients: 400 × [Molten Salt](https://factorio.kalzumeus.com/fluid/molten-salt.md) - Results: 400 × [Hot Molten Salt](https://factorio.kalzumeus.com/fluid/hot-molten-salt.md) (4000°C) - Made in: Biomass powerplant MK 04 - Unlocked by: [Biomass Power - Stage 4](https://factorio.kalzumeus.com/tech/biomassplant-mk04.md) ### Pressurized steam (`he-04`) - 2.5 s · tier 8 - Ingredients: 100 × [Hot Molten Salt](https://factorio.kalzumeus.com/fluid/hot-molten-salt.md) (≥3950°C), 75 × [Pressurized water](https://factorio.kalzumeus.com/fluid/pressured-water.md) - Results: 100 × [Molten Salt](https://factorio.kalzumeus.com/fluid/molten-salt.md), 75 × [Pressurized steam](https://factorio.kalzumeus.com/fluid/pressured-steam.md) (4000°C) - Made in: Heat exchanger MK01, Heat exchanger MK02, Heat exchanger MK03, Heat exchanger MK04 - Unlocked by: [Biomass Power - Stage 4](https://factorio.kalzumeus.com/tech/biomassplant-mk04.md), [Coal Power - Stage 4](https://factorio.kalzumeus.com/tech/coalplant-mk04.md), [Gas Power - Stage 4](https://factorio.kalzumeus.com/tech/gasplant-mk04.md), [Oil Power - Stage 4](https://factorio.kalzumeus.com/tech/oilplant-mk04.md), [Solar Power - Stage 4](https://factorio.kalzumeus.com/tech/solar-power-mk04.md) ### Biomass (`organics-from-dirty-water`) - 4 s · tier 8 - Ingredients: 250 × [Muddy sludge](https://factorio.kalzumeus.com/fluid/muddy-sludge.md) - Results: 1 × [Biomass](https://factorio.kalzumeus.com/item/biomass.md) - Made in: Evaporator MK 01, Evaporator MK 01 (Legacy), Evaporator MK 02, Evaporator MK 02 (Legacy), Evaporator MK 03, Evaporator MK 03 (Legacy), Evaporator MK 04, Evaporator MK 04 (Legacy) - Unlocked by: [Biomass Power - Stage 4](https://factorio.kalzumeus.com/tech/biomassplant-mk04.md) ### Biomass powerplant MK 04 (`py-biomass-powerplant-mk04`) - 5 s · tier 8 - Ingredients: 1 × [Biomass powerplant MK 03](https://factorio.kalzumeus.com/item/py-biomass-powerplant-mk03.md), 100 × [Low density structure](https://factorio.kalzumeus.com/item/low-density-structure.md), 150 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 100 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 20 × [Carbon aerogel](https://factorio.kalzumeus.com/item/carbon-aerogel.md), 50 × [Intelligent unit](https://factorio.kalzumeus.com/item/intelligent-unit.md), 10 × [Metastable Quasicrystal](https://factorio.kalzumeus.com/item/metastable-quasicrystal.md), 60 × [Aluminium Silver Alloy](https://factorio.kalzumeus.com/item/alag-alloy.md), 8 × [Superconducting Claw-pole Engine](https://factorio.kalzumeus.com/item/sc-engine.md), 20 × [Control unit](https://factorio.kalzumeus.com/item/control-unit.md), 100 × [Metallic glass](https://factorio.kalzumeus.com/item/metallic-glass.md), 5 × [Mechanical Parts 04](https://factorio.kalzumeus.com/item/mechanical-parts-04.md) - Results: 1 × [Biomass powerplant MK 04](https://factorio.kalzumeus.com/item/py-biomass-powerplant-mk04.md) - Made in: Burner assembling machine MK 01, Burner assembling machine MK 02, Burner assembling machine MK 03, Automated factory MK 01, Automated factory MK 02, Automated factory MK 03, Automated factory MK 04, Character, Character (flying), Mutagenic infusion, (flying) - Unlocked by: [Biomass Power - Stage 4](https://factorio.kalzumeus.com/tech/biomassplant-mk04.md)