# Fusion energy - Stage 3 (technology)

internal name `fusion-mk03` · tier 9 (Utility science pack, [tier 9](https://factorio.kalzumeus.com/tier/9.md))
HTML page: https://factorio.kalzumeus.com/tech/fusion-mk03/

## 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 (1)

- [Utility science pack](https://factorio.kalzumeus.com/tech/utility-science-pack.md)

## Leads to (1)

- [Fusion energy - Stage 4](https://factorio.kalzumeus.com/tech/fusion-mk04.md)

## Unlocks (3 recipes)

### Fuse deuterium and helium-3 (`dt-he3`)

- 40 s · tier 9
- Ingredients: 50 × [Deuterium](https://factorio.kalzumeus.com/fluid/deuterium.md), 50 × [Helium-3](https://factorio.kalzumeus.com/fluid/helium3.md), 35 × [Liquid helium](https://factorio.kalzumeus.com/fluid/liquid-helium.md)
- Results: 7500 × [Neutron](https://factorio.kalzumeus.com/fluid/neutron.md) (3000°C), 175 × [Helium](https://factorio.kalzumeus.com/fluid/helium.md), 20 × [Hydrogen proton](https://factorio.kalzumeus.com/fluid/proton.md)
- Made in: Aneutronic fusion reactor
- Unlocked by: [Fusion energy - Stage 3](https://factorio.kalzumeus.com/tech/fusion-mk03.md)

### Aneutronic fusion reactor (`fusion-reactor-mk02`)

- 5 s · tier 9
- Ingredients: 2 × [Fusion reactor](https://factorio.kalzumeus.com/item/fusion-reactor-mk01.md), 2000 × [Reinforced wall shield](https://factorio.kalzumeus.com/item/reinforced-wall-shield.md)
- Results: 1 × [Aneutronic fusion reactor](https://factorio.kalzumeus.com/item/fusion-reactor-mk02.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: [Fusion energy - Stage 3](https://factorio.kalzumeus.com/tech/fusion-mk03.md)

### Helium-3 (`he3-separation`)

- 8 s · tier 9
- Ingredients: 1 × [Silver foam](https://factorio.kalzumeus.com/item/silver-foam.md), 10 × [Helium](https://factorio.kalzumeus.com/fluid/helium.md), 4 × [Niobium plate](https://factorio.kalzumeus.com/item/niobium-plate.md)
- Results: 8 × [Helium-3](https://factorio.kalzumeus.com/fluid/helium3.md), 2 × [Helium](https://factorio.kalzumeus.com/fluid/helium.md)
- Made in: Gas processing unit MK 01, Gas processing unit MK 02, Gas processing unit MK 03, Gas processing unit MK 04
- Unlocked by: [Fusion energy - Stage 3](https://factorio.kalzumeus.com/tech/fusion-mk03.md)