# Thermosolar Power - Stage 4 (technology) internal name `thermal-mk04` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md)) HTML page: https://factorio.kalzumeus.com/tech/thermal-mk04/ ## Cost 3600 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 (2) - [Solar Power - Stage 4](https://factorio.kalzumeus.com/tech/solar-power-mk04.md) - [Thermosolar Power - Stage 3](https://factorio.kalzumeus.com/tech/thermal-mk03.md) ## Leads to (1) - [Bioreactor upgrade](https://factorio.kalzumeus.com/tech/bioreactor-upgrade.md) ## Unlocks (4 recipes) ### Mirror MK04 (`mirror-mk04`) - 20 s · tier 9 · productivity modules allowed - Ingredients: 1 × [Spiro OMeTAD](https://factorio.kalzumeus.com/item/ometad.md), 1 × [Phosphate glass](https://factorio.kalzumeus.com/item/phosphate-glass.md), 1 × [Nano mesh](https://factorio.kalzumeus.com/item/nano-mesh.md), 1 × [Transparent Anode](https://factorio.kalzumeus.com/item/transparent-anode.md), 1 × [Animal Reflectors](https://factorio.kalzumeus.com/item/animal-reflectors.md), 3 × [Titanium Dioxide](https://factorio.kalzumeus.com/item/tio2.md), 2 × [Silver Nitrate](https://factorio.kalzumeus.com/item/silver-nitrate.md), 2 × [Polishing wheel](https://factorio.kalzumeus.com/item/polishing-wheel.md), 1 × [Polishing compound](https://factorio.kalzumeus.com/item/cerium-oxide.md) - Results: 1 × [Mirror MK04](https://factorio.kalzumeus.com/item/mirror-mk04.md) - Made in: Molecular assembler MK 01, Molecular assembler MK 02, Molecular assembler MK 03, Molecular assembler MK 04 - Unlocked by: [Thermosolar Power - Stage 4](https://factorio.kalzumeus.com/tech/thermal-mk04.md) ### Spiro OMeTAD (`ometad`) - 10 s · tier 9 · productivity modules allowed - Ingredients: 1 × [Perovskite Nickelate](https://factorio.kalzumeus.com/item/perovskite-nickelate.md), 1 × [Rhodamine B](https://factorio.kalzumeus.com/item/rhodamine-b.md), 1 × [1D Photonic Crystal](https://factorio.kalzumeus.com/item/1d-photonic-crystal.md), 1 × [Nexelit Zinc Gadolinium Special Alloy](https://factorio.kalzumeus.com/item/nxzngd.md) - Results: 1 × [Spiro OMeTAD](https://factorio.kalzumeus.com/item/ometad.md) - Made in: Chemical plant, Chemical plant MK 01, Chemical plant MK 02, Chemical plant MK 03, Chemical plant MK 04 - Unlocked by: [Thermosolar Power - Stage 4](https://factorio.kalzumeus.com/tech/thermal-mk04.md) ### Solar tower megastructure (`solar-tower-building`) - 10 s · tier 9 - Ingredients: 1000 × [Concrete](https://factorio.kalzumeus.com/item/concrete.md), 1000 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 500 × [Carbon Fiber](https://factorio.kalzumeus.com/item/cf.md), 800 × [Biopolymer](https://factorio.kalzumeus.com/item/biopolymer.md), 800 × [Niobium pipe](https://factorio.kalzumeus.com/item/niobium-pipe.md), 300 × [Metallic glass](https://factorio.kalzumeus.com/item/metallic-glass.md), 1000 × [Glass](https://factorio.kalzumeus.com/item/glass.md), 1000 × [Iron niobium alloy](https://factorio.kalzumeus.com/item/nbfe-alloy.md), 500 × [Advanced coating](https://factorio.kalzumeus.com/item/science-coating.md), 1000 × [Carbon aerogel](https://factorio.kalzumeus.com/item/carbon-aerogel.md), 50 × [Metastable Quasicrystal](https://factorio.kalzumeus.com/item/metastable-quasicrystal.md), 10 × [Intelligent unit](https://factorio.kalzumeus.com/item/intelligent-unit.md), 400 × [Low density structure](https://factorio.kalzumeus.com/item/low-density-structure.md), 10 × [Mechanical Parts 04](https://factorio.kalzumeus.com/item/mechanical-parts-04.md) - Results: 1 × [Solar tower megastructure](https://factorio.kalzumeus.com/item/solar-tower-building.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: [Thermosolar Power - Stage 4](https://factorio.kalzumeus.com/tech/thermal-mk04.md) ### Heliostat (`solar-tower-panel`) - 1 s · tier 9 - Ingredients: 20 × [Super steel](https://factorio.kalzumeus.com/item/super-steel.md), 6 × [Mirror MK03](https://factorio.kalzumeus.com/item/mirror-mk03.md), 1 × [Mirror MK04](https://factorio.kalzumeus.com/item/mirror-mk04.md), 3 × [Anti Reflective Glass](https://factorio.kalzumeus.com/item/anti-reflex-glass.md), 1 × [Intelligent unit](https://factorio.kalzumeus.com/item/intelligent-unit.md), 2 × [Tracker](https://factorio.kalzumeus.com/item/axis-tracker.md), 1 × [Nano Structured Material](https://factorio.kalzumeus.com/item/ns-material.md), 50 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 5 × [Graphene roll](https://factorio.kalzumeus.com/item/graphene-roll.md), 1 × [Electric engine unit](https://factorio.kalzumeus.com/item/electric-engine-unit.md), 3 × [EVA (Ethylene-vinyl acetate)](https://factorio.kalzumeus.com/item/eva.md), 7 × [Carbon Fiber](https://factorio.kalzumeus.com/item/cf.md), 2 × [Aerogel](https://factorio.kalzumeus.com/item/aerogel.md) - Results: 1 × [solar-tower-panel](https://factorio.kalzumeus.com/item/solar-tower-panel.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: [Thermosolar Power - Stage 4](https://factorio.kalzumeus.com/tech/thermal-mk04.md)