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Big Reactors 9minecraft Mod lets you build massive power plants to run your machines. It brings huge, custom-built reactors and spinning turbines into your world. You gather special materials to construct these giant machines block by block. Once built, you feed them fuel to create massive amounts of energy for your base. The mod gives you full control over how hot the machines get and how much power they make.

Big Reactors lets you build large multiblock fission Reactors and Reactor Turbines that generate huge amounts of power. Mine Yellorium, craft reactor casing, glass, fuel rods and ports, assemble a hollow reactor around a controller, feed in fuel, and activate it to fill an internal energy buffer you pull power from.

Features:

  • Custom Reactors: Build your own power plant out of individual blocks to fit any shape or size you need.
  • Turbine Systems: Turn water into steam and pipe it into giant spinning turbines for even more energy.
  • Adds Yellorium ore underground for you to mine and process into nuclear fuel.
  • Gives you control rods to adjust how hot the machine runs and how much power it creates.
  • Produces waste materials that you need to safely remove from the machine.
  • Stores the generated energy inside the machine so you can pull it out with power cables.

How to Use:

  1. Mine Yellorium ore underground and process it into usable fuel.
  2. Craft reactor casings, reactor glass, a controller, and power ports.
  3. Build a hollow box using the casings and glass to form the outside of the machine.
  4. Place columns of fuel rods inside the hollow box and put the controller on an outside wall.
  5. Put your Yellorium fuel into the access port and turn on the machine using the controller screen.

Screenshots:

The Big Reactors 9minecraft Mod entry loaded in the in-game mods list, shown alongside its ZeroCore2 library and ready to play.
The Big Reactors 9minecraft Mod entry loaded in the in-game mods list, shown alongside its ZeroCore2 library and ready to play.
A completed multiblock Reactor built from reactor casing, with an access port on one face for inserting Yellorium fuel and a control rod set into the wall.
A completed multiblock Reactor built from reactor casing, with an access port on one face for inserting Yellorium fuel and a control rod set into the wall.
A Reactor built with reactor glass windows, revealing the internal fuel rod assemblies that run down through the core of the multiblock.
A Reactor built with reactor glass windows, revealing the internal fuel rod assemblies that run down through the core of the multiblock.
A closer angled view of a Reactor, with the fuel rod columns visible through the reactor glass and a row of reactor blocks laid out beside it.
A closer angled view of a Reactor, with the fuel rod columns visible through the reactor glass and a row of reactor blocks laid out beside it.
The Reactor Controller interface, with the fuel, heat, and internal energy-buffer gauges used to monitor the Reactor and adjust its control rods.
The Reactor Controller interface, with the fuel, heat, and internal energy-buffer gauges used to monitor the Reactor and adjust its control rods.
The Reactor Controller for a running Reactor, showing the on/off toggle, core heat and coolant readouts, control-rod level, and the energy buffer.
The Reactor Controller for a running Reactor, showing the on/off toggle, core heat and coolant readouts, control-rod level, and the energy buffer.
Two separate multiblock Reactors side by side, one built with reactor glass to expose the fuel rods inside and one sealed in solid reactor casing.
Two separate multiblock Reactors side by side, one built with reactor glass to expose the fuel rods inside and one sealed in solid reactor casing.
The Big Reactors creative tab, showing the mod's blocks and items: Yellorium ore and ingots, reactor casing and glass, fuel rods, ports, and coolant parts.
The Big Reactors creative tab, showing the mod’s blocks and items: Yellorium ore and ingots, reactor casing and glass, fuel rods, ports, and coolant parts.
A row of Big Reactors component blocks laid out on the ground, including reactor casing, ports, reactor glass, and other coloured multiblock parts.
A row of Big Reactors component blocks laid out on the ground, including reactor casing, ports, reactor glass, and other coloured multiblock parts.
A finished multiblock Reactor viewed from the front, its casing fitted with an access port and a control rod, ready to be fuelled and activated.
A finished multiblock Reactor viewed from the front, its casing fitted with an access port and a control rod, ready to be fuelled and activated.

Wiki:

The Big Reactors wiki — full technical documentation for modders, developers, and players who want to dig deeper.

Open Wiki

How to Install:

New to Minecraft? Follow our step-by-step guide to install Mods on your PC.View Guide

Requirements:

NeoForge RequiredZeroCore2 9minecraft Mod Required

Big Reactors 9minecraft Mod Download Links

For Minecraft 26.2

NeoForge 2 MB Jul 11, 2026
Download from Server 1 — Download from Server 2

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