Better Fusion Reactor for Mekanism PLUS
Modby igentuman
Reinvention of Fusion Reactor and new stuff
Type
Mod
CurseForge Downloads
1,540,963
CurseForge ID
602409
Modrinth Downloads
44,121
Modrinth ID
ZUDRV4lN
Last Updated
Jul 27, 2026
Description
Better Fusion Reactor is an addon for Mekanism Generators
Supported versions: 1.12.2, 1.16.5, 1.18.2, 1.19.2
The idea behind this addon is to bring Fusion Reactor from Mekanism a bit more realistic and more challenging to manage.
In real life fusion reaction is very difficult thing and humanity is not yet achieved stable long-term reaction.
By installing this addon you will have to control certain parameters of Fusion Reactor with redstone, computers or manually.
And as higher temperatures as harder to maintain stable reaction.
This addon adds new UI for reactor controller and reactor logic port.
You will have to re-build current reactors if you have any with blocks from this mod.
What is all about?
Your task is to keep Current Reactivity (CT) as close as possible to Target Reactivity (TR)
And by that you will get better Reaction Efficiency. That means more energy output, or steam per tick, or heat.
If Efficiency less than 80%, the Error Level will grow up. And if Error Level reaches 100%, Reactor will shutdown. It also can go BOOM 💥 if that is enabled in config. (disabled by default)
If Efficiency greater than 80%, the Error Level will slowly fall down.
Keep in mind Target Reactivity is a random value between 0 and 100, and it changes periodically.
So you can't just ignite your reactor and walk away. You has to spend some time to controll it manually, or implement sort of automation logic on redstone or computers.
Pay attention to Heat Multiplier (Hm). Less value means bigger time span between Target Reactivity reset.
And it also affects how fast Error Level changes. So for the manual control, try to keep it closer to 0.
Heat Multiplier depends on plasma temperature. Play with injection rate and you will find the best value.
It also depends on cooling type. Water cooling - less Heat Multiplier.
But if you want to get more energy, you have to automate reactor controlling.
Good Luck.
Example LUA script for OpenComputers https://github.com/igentuman/BettefFusionReactor/wiki/Simple-OpenComputers---ComputerCraft-script-for-reactor
Credits:
pupnewfster, aidancbrady, thommy101, thiakil and dizzyd
for original mod
Compatibility
Mod Loaders
Forge
Neoforge
Game Versions
1.12.2
1.16.5
1.18.2
1.19.2
1.20.1
1.21.1
Screenshots
Similar Mods
WitherCrumbs
An addon for Headcrumbs that adds custom user based withers
Mod
15,843,923
Too Many Glyphs
Expansion pack for Ars Nouveau
Mod
15,840,408
Thermoo
Temperature and Environment library mod for Fabric and Quilt. Used by Frostiful and Scorchful.
Mod
15,790,086
Tree Growing Simulator
Make your skyblock more interesting!
Mod
15,785,509
Create Better FPS
Improve your Create FPS, up to 50%
Mod
15,764,734
Career Bees
Professional working bees, just trying to make a living.
Mod
15,762,483
Included in Modpacks
Trusted Modded
Electrical Warfare
Create: Endless Industry
TNIF (TECHNOLOGICAL INFECTION)