# Photovoltaic - Stage 4 (technology)

internal name `solar-mk04` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md))
HTML page: https://factorio.kalzumeus.com/tech/solar-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 (1)

- [Solar Power - Stage 4](https://factorio.kalzumeus.com/tech/solar-power-mk04.md)

## Leads to (1)

- [Quantum computing](https://factorio.kalzumeus.com/tech/space-science-pack.md)

## Unlocks (2 recipes)

### Multi Quantum Dot Cell (`mqdc`)

- 15 s · tier 9 · productivity modules allowed
- Ingredients: 2 × [Aluminium Silver Grid](https://factorio.kalzumeus.com/item/alag-grid.md), 10 × [Quantum dots](https://factorio.kalzumeus.com/item/quantum-dots.md), 3 × [Quantum Well](https://factorio.kalzumeus.com/item/quantum-well.md), 5 × [Electronic Grade Silicon](https://factorio.kalzumeus.com/item/eg-si.md), 1 × [Supercapacitor shell](https://factorio.kalzumeus.com/item/supercapacitor-shell.md), 1 × [Processor core](https://factorio.kalzumeus.com/item/processor-core.md), 5 × [Heavily n-doped silicon](https://factorio.kalzumeus.com/item/heavy-n.md), 1 × [Photonic Crystal](https://factorio.kalzumeus.com/item/photonic-crystal.md), 1 × [Clean Glass Sheet](https://factorio.kalzumeus.com/item/clean-glass-sheet.md), 50 × [Helium](https://factorio.kalzumeus.com/fluid/helium.md), 1 × [InGaP](https://factorio.kalzumeus.com/item/ingap.md), 1 × [InGaAs](https://factorio.kalzumeus.com/item/ingaas.md), 1 × [Gallium arsenide](https://factorio.kalzumeus.com/item/gaas.md), 5 × [Antimony oxide](https://factorio.kalzumeus.com/item/sb-oxide.md)
- Results: 1 × [Multi Quantum Dot Cell](https://factorio.kalzumeus.com/item/mqdc.md)
- Made in: Molecular assembler MK 01, Molecular assembler MK 02, Molecular assembler MK 03, Molecular assembler MK 04
- Unlocked by: [Photovoltaic - Stage 4](https://factorio.kalzumeus.com/tech/solar-mk04.md)

### Solar panel MK 04 (`solar-panel-mk04`)

- 0.5 s · tier 9
- Ingredients: 50 × [Super alloy](https://factorio.kalzumeus.com/item/super-alloy.md), 10 × [Multi Quantum Dot Cell](https://factorio.kalzumeus.com/item/mqdc.md), 20 × [Anti Reflective Glass](https://factorio.kalzumeus.com/item/anti-reflex-glass.md), 5 × [Intelligent unit](https://factorio.kalzumeus.com/item/intelligent-unit.md), 1 × [Metastable Quasicrystal](https://factorio.kalzumeus.com/item/metastable-quasicrystal.md), 100 × [Special small parts](https://factorio.kalzumeus.com/item/small-parts-03.md), 30 × [Biopolymer](https://factorio.kalzumeus.com/item/biopolymer.md), 10 × [Molybdenum plate](https://factorio.kalzumeus.com/item/molybdenum-plate.md), 10 × [Carbon nanotubes](https://factorio.kalzumeus.com/item/carbon-nanotube.md), 5 × [MILFe](https://factorio.kalzumeus.com/item/milfe.md), 1 × [Mechanical Parts 04](https://factorio.kalzumeus.com/item/mechanical-parts-04.md), 5 × [Superconductor servomechanisms](https://factorio.kalzumeus.com/item/superconductor-servomechanims.md), 10 × [Quantum dots](https://factorio.kalzumeus.com/item/quantum-dots.md), 20 × [Hyperelastic material](https://factorio.kalzumeus.com/item/hyperelastic-material.md)
- Results: 1 × [Solar panel MK 04](https://factorio.kalzumeus.com/item/solar-panel-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: [Photovoltaic - Stage 4](https://factorio.kalzumeus.com/tech/solar-mk04.md)