# Gas Power - Stage 4 (technology) internal name `gasplant-mk04` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md)) HTML page: https://factorio.kalzumeus.com/tech/gasplant-mk04/ ## Cost 3300 units of (1 × [Utility science pack](https://factorio.kalzumeus.com/item/utility-science-pack.md), 2 × [pY science pack 4](https://factorio.kalzumeus.com/item/py-science-pack-4.md), 3 × [Production science pack](https://factorio.kalzumeus.com/item/production-science-pack.md), 6 × [pY science pack 3](https://factorio.kalzumeus.com/item/py-science-pack-3.md), 10 × [Chemical science pack](https://factorio.kalzumeus.com/item/chemical-science-pack.md), 20 × [pY science pack 2](https://factorio.kalzumeus.com/item/py-science-pack-2.md), 30 × [Logistic science pack](https://factorio.kalzumeus.com/item/logistic-science-pack.md), 60 × [pY science pack 1](https://factorio.kalzumeus.com/item/py-science-pack-1.md), 100 × [Automation science pack](https://factorio.kalzumeus.com/item/automation-science-pack.md), 20 × [Military science pack](https://factorio.kalzumeus.com/item/military-science-pack.md)), 600 s each. ## Requires (3) - [Gas Power - Stage 3](https://factorio.kalzumeus.com/tech/gasplant-mk03.md) - [Non Renewables - Stage 4](https://factorio.kalzumeus.com/tech/nonrenewable-mk04.md) - [Utility science pack](https://factorio.kalzumeus.com/tech/utility-science-pack.md) ## Leads to (0) - none ## Unlocks (3 recipes) ### Hot Molten Salt (`gas-molten-salt-04`) - 20 s · tier 9 - Ingredients: 500 × [Molten Salt](https://factorio.kalzumeus.com/fluid/molten-salt.md) - Results: 500 × [Hot Molten Salt](https://factorio.kalzumeus.com/fluid/hot-molten-salt.md) (4000°C) - Made in: Gas powerplant MK 01, Gas powerplant MK 02, Gas powerplant MK 03, Gas powerplant MK 04 - Unlocked by: [Gas Power - Stage 4](https://factorio.kalzumeus.com/tech/gasplant-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) ### Gas powerplant MK 04 (`py-gas-powerplant-mk04`) - 5 s · tier 9 - Ingredients: 1 × [Gas powerplant MK 03](https://factorio.kalzumeus.com/item/py-gas-powerplant-mk03.md), 30 × [Metastable Quasicrystal](https://factorio.kalzumeus.com/item/metastable-quasicrystal.md), 50 × [Harmonic absorber](https://factorio.kalzumeus.com/item/harmonic-absorber.md), 30 × [Control unit](https://factorio.kalzumeus.com/item/control-unit.md), 40 × [Boron](https://factorio.kalzumeus.com/item/boron.md), 100 × [Metallic glass](https://factorio.kalzumeus.com/item/metallic-glass.md), 8 × [Superconducting Claw-pole Engine](https://factorio.kalzumeus.com/item/sc-engine.md), 30 × [Hyperelastic material](https://factorio.kalzumeus.com/item/hyperelastic-material.md), 100 × [Titanium nitride](https://factorio.kalzumeus.com/item/ti-n.md), 500 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 5 × [Mechanical Parts 04](https://factorio.kalzumeus.com/item/mechanical-parts-04.md) - Results: 1 × [Gas powerplant MK 04](https://factorio.kalzumeus.com/item/py-gas-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: [Gas Power - Stage 4](https://factorio.kalzumeus.com/tech/gasplant-mk04.md)