CurseForge · Minecraft mod
Mekanism Add UpgradeSlots
Adds upgrade slots to Mekanism machines that originally lack them !!
Quick answer
Which Mekanism Add UpgradeSlots release should I use?
Mekanism Add UpgradeSlots MekanismAddUpgradeSlots-1.8.0.jar targets 1.12.2 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 2 required mods have matching files.
Where it goes
Is Mekanism Add UpgradeSlots required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Mekanism Add UpgradeSlots MekanismAddUpgradeSlots-1.8.0.jar need?
MekanismAddUpgradeSlots-1.8.0.jar. Change the file and its required mods may change too.
Install Mekanism-CE-Unofficial, MixinBooter first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Mekanism Add UpgradeSlots without breaking your instance.
Built for Mekanism Add UpgradeSlots MekanismAddUpgradeSlots-1.8.0.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use MekanismAddUpgradeSlots-1.8.0.jar. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Mekanism-CE-Unofficial, MixinBooter first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside MekanismAddUpgradeSlots-1.8.0.jar. It opens that exact file at the source.
About this project
What does Mekanism Add UpgradeSlots add?
Mekanism Add Upgrade Slots
📖 Overview
This Mod introduces Upgrade Slots to Machines and Generators that originally do not support Upgrades in Mekanism.

⚡ Upgrade Effects
- Speed Upgrade
Increases the Generation Rate (power produced per tick) of supported Machines up to 10×. - Energy Upgrade
Expands the Max Energy Storage up to 10×.
Increases the Output Rate (energy per tick that can be transferred) up to 10×.
🔧 Supported Machines
- Bio Generator
- Gas Generator
- Heat Generator
- Solar Generator
- Wind Generator
- Laser Amplifier
- Laser Tractor Beam

NEW - Fusion Reactor
Added THREAD and Energy Upgrades to the Fusion Reactor, enhancing Plasma Temperature, Energy Capacity, Tank Capacity, and Steam Output for Significantly Strengthened Power Generation
More machines, including multi-block structures like Thermal Evaporation Plants and Fusion Reactors, are planned for upcoming updates!
📦 Requirements
⚠ Notes
⚠️ This addon significantly alters the balance of Mekanism.
Please be cautious when installing, as it may affect existing worlds and interactions with other mods.
Because this mod modifies core Mekanism behavior, there may be instability in certain environments. It is highly recommended to keep backups of your world when trying this mod, just like with any new mod version.
There is a known bug where the back button in the upgrade GUI does not work.
Project description from CurseForge.
Pick your setup
Mekanism Add UpgradeSlots by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Mekanism Add UpgradeSlots versions and loaders
MekanismAddUpgradeSlots-1.8.0.jar
MekanismAddUpgradeSlots-1.8.0-dev.jar
6 Oct 2025
MekanismAddUpgradeSlots-1.7.0.jar
MekanismAddUpgradeSlots-1.7.0-dev.jar
22 Sept 2025
MekanismAddUpgradeSlots-1.6.1.jar
MekanismAddUpgradeSlots-1.6.1-dev.jar
19 Sept 2025
mekanismaddupgradeslots-1.6.0.jar
mekanismaddupgradeslots-1.6.0-dev.jar
16 Sept 2025
Looking for an older file? The official CurseForge project page is in Resources.