Nuclear Reactors

Available as soon as you've reached the Moon (late HV-early EV - unlock the Open Computers tab), nuclear reactors are a strong power source for EV and IV. The process of creating a reactor is quite complex and risks huge nuclear explosions. You are strongly advised to try all designs in a reactor planner before using them, and to encase your reactors in reinforced materials (2 layers minimum) or warded glass (thaumcraft) to prevent explosions from destroying the area. Test your preparations in creative first!

Documentation on reactors is rather spotty, you can ask questions in the GTNH discord.

There are two types of reactors:

EU reactors produce raw energy directly with a 50% penalty. Use a transformer on a reactor or reactor chamber to extract the EU. Make sure the side facing the reactor is high enough voltage to accept the full amount from the chamber.

Fluid reactors produce hot coolant. Use a Large Heat Exchanger to convert the Hot Coolant to HP steam and HP steam turbines/LP steam turbines to generate energy with very high efficiency.

Fuel types used are thorium, uranium, and MOX. Naquadah and naquadria rods are also available, acting like uranium and MOX rods, respectively, with longer lifetimes.

Thorium is the cheapest and easiest to obtain, obtainable in large quantities from coal ore or thorium ore found in the nether. It lasts a long time but doesn't make much power.

Uranium is obtained at Mars tier from uraninite ore. It doesn't last as long as thorium, but makes more power.

MOX is obtained by mixing plutonium (from depleted uranium rods, centrifuging uranium dust, or ores on later planets) with uranium. It returns enough plutonium to sustain itself.

Naquadah and naquadria are obtained from later-game ores, and are generally best used in naquadah generators.

Sample reactors

Thorium

This is a 1920 EU/t Thorium reactor that requires a full set of 6 extra reactor chambers.

current planner code: erp=AXOtKmioS5WCLCu13mOkive4moTnC3tpyagxEQx88Q2M5Oq0gZtxNeHkqPVl4hosAQ==

old planner code: 0D00000D0C0D0C000D140D0D140D140D0D140D1C1C0D1C0D1C1C0D0D1C1C0D1C0D1C1C0D140D0D140D140D0D140D00000D0C0D0C000D

It can be cut in half to use extra 1 reactor chamber for 800 EU/t.

Vac Nuke (cooled using coolant cells) that makes 8720 EU/t

current planner code: erp=L5HgE2mBEZ3lEChHiPSKQebp2B7CjhV1vb7mnbGvvs/iLKQ1XCULzgNPFqlJ62oB

old planner code : 221C1C1C221C1C221C1C1C221C1C1C1C221C221C1C1C1C221C1C1C1C1C1C221C1C1C1C221C221C1C1C1C221C1C1C221C1C221C1C1C22

Uranium

This reactor is capable of outputting 4200 EU/t

current planner code: erp=XOtKmioScOCAVvhxjtUE1CGY1K8qrv9qrqdjsZmr+SQqPEXmFPrA4t4BOaJQmcK8AQ==

old planner code: 030C0D140D0D0C0D15150C0D0D0C0D0D030D0C0D030D0D030D0D0C0C0D0D0C0D0D0C0D150D030D0D030D0D030D150D0C150D0C150D0C

This reactor can speed up plutonium production and is capable of outputting 4000 EU/t

current planner code: erp=XOtKmioS6LMRpctpYrlNyEi4BHC9qj0EsNW2ZpJFj9FTa5fjUV92Vwh57JXVVtUgAQ==

old planner code: 020D020D010D020D020D0C0D020D020D0C0D020D020D010D020D020D0C0D020D020D0C0D020D020D020D020D020D020D010D010D020D|esn

This reactor is the MARK I EB listed on the IndustrialCraft homepage and is capable of outputting 6000 EU/t

current planner code: erp=XOtKmioNgeIkJcoxO604g5Lqqs1aJE0RAyP+XlAWEnbiebObM1sSu+HLTJKS30MoAQ==

old planner code: 0A140A140A140A140A030A0C0A0C0A0C0A030A140A140A0C0A140A0C0A0C0A030A0C0A0C0A140A140A140A140A030A0C0A0C0A0C0A03|esn

MOX

This reactor is capable of outputting 6000 EU/t

current planner code: erp=XOtKmioSa3rW9BJMjM3ZVB3qetAlZbs548FCxmN8Fy7f+jevm6Wpjme45XjueZLoAQ==

old planner code: 0A140A0C150C0A140A0C0A060A0C0A060A0C0A0C0A0C0A0C0A0C0A140A0C0A060A0C0A140A060A0C0A0C0A060A0C0A140A0C0A140A0C|esn

Naquadah

This reactor is capable of outputting 8400 EU/t

current planner code: erp=XOtKmioScOCAVvhxjv9KF9Xi0aL6IDEJ+fJI+3NChAvq9Z+rOMg8YoO4LK0FdcNIAQ==

old planner code: 260C0D140D0D0C0D15150C0D0D0C0D0D260D150D260D0D260D0D0C0C0D0D0C0D0D0C0D150D260D0D260D0D260D150D0C150D0C150D0C|esn

Fluid Nukes

A 1352 HU/s Uranium based fluid nuke, requires neutron reflectors

current planner code: erp=XOtKmioVsbXCdyR/VUBUnoYU2LvBaM0BQuMnTSA73EWCCtftNq68UGosFJOAL8xkAQ==

old planner code:2303230C0A120D0C0A03230C0D0C0D0C0D12230C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D0C0D140A140D120D120A12