# Coal Power - Stage 4 (technology)

internal name `coalplant-mk04` · tier 8 (pY science pack 4, [tier 8](https://factorio.kalzumeus.com/tier/8.md))
HTML page: https://factorio.kalzumeus.com/tech/coalplant-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 (2)

- [Coal Power - Stage 3](https://factorio.kalzumeus.com/tech/coalplant-mk03.md)
- [Non Renewables - Stage 4](https://factorio.kalzumeus.com/tech/nonrenewable-mk04.md)

## Leads to (0)

- none

## Unlocks (3 recipes)

### Hot Molten Salt (`coal-molten-salt-04`)

- 80 s · tier 8
- 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: Coal powerplant MK 04
- Unlocked by: [Coal Power - Stage 4](https://factorio.kalzumeus.com/tech/coalplant-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)

### Coal powerplant MK 04 (`py-coal-powerplant-mk04`)

- 5 s · tier 8
- Ingredients: 1 × [Coal powerplant MK 03](https://factorio.kalzumeus.com/item/py-coal-powerplant-mk03.md), 300 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 200 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 50 × [Intelligent unit](https://factorio.kalzumeus.com/item/intelligent-unit.md), 20 × [Metastable Quasicrystal](https://factorio.kalzumeus.com/item/metastable-quasicrystal.md), 50 × [Superconductor servomechanisms](https://factorio.kalzumeus.com/item/superconductor-servomechanims.md), 20 × [Control unit](https://factorio.kalzumeus.com/item/control-unit.md), 100 × [Titanium nitride](https://factorio.kalzumeus.com/item/ti-n.md), 50 × [Metallic glass](https://factorio.kalzumeus.com/item/metallic-glass.md), 8 × [Superconducting Claw-pole Engine](https://factorio.kalzumeus.com/item/sc-engine.md), 200 × [Niobium titanium alloy](https://factorio.kalzumeus.com/item/nbti-alloy.md), 5 × [Mechanical Parts 04](https://factorio.kalzumeus.com/item/mechanical-parts-04.md)
- Results: 1 × [Coal powerplant MK 04](https://factorio.kalzumeus.com/item/py-coal-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: [Coal Power - Stage 4](https://factorio.kalzumeus.com/tech/coalplant-mk04.md)