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KJ's Electrostatics

by kjmaster1

KJ's Electrostatics turns static electricity from carpet and rubber-soled boots into FE power, with rubber obtained from resin logs.

NeoForgeClient and serverMIT LicenseOpen source1.21.1

What it does

Players collect rubber by right-clicking a log with a treetap to draw out resin, then smelting that resin into rubber. Rubber is the base material for the mod's crafting recipes, so the first step in any playthrough runs through the tree-tapping process. The mod also adds an alternative route to rubber that can be turned off in the config, and rubber ore dictionary tags let other mods use the same material.

Static electricity is produced when a player walks on carpet while wearing the rubber boots, and the charge can be harnessed and stored as FE. The energy then powers machines built with other technology mods. KJ's Electrostatics requires McJtyLib, and is open source under the MIT License, published for NeoForge 1.21.1. A server running it needs every connecting player to have it too.

Optional integration covers Just Enough Items, Patchouli, The One Probe and a block-machine base mod. Those add recipe lookup, a guidebook and in-world probe information when installed.

Key features

  1. Treetap resin collection

    A treetap crafted from iron is used on logs to gather resin, the starting material for rubber.

  2. Rubber smelting

    Resin smelted in a furnace produces rubber, which is used in the mod's recipes and the rubber boots.

  3. Static electricity from carpet

    Walking on carpet in rubber boots generates static electricity that can be harnessed for FE energy.

  4. Optional alternative rubber source

    A second way to obtain rubber is available, and a config option disables it when it is not wanted.

Compatibility

Latest build for each game version and loader.

1.21.11.21.1-1.0.0
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

Requirements

Dependencies declared by the latest file for each loader.

Required 1

McJtyLibLibrary mod used by most mods by McJty and romelo333 (RFTools, XNet, Deep Resonance, Not Enough Wands, SignTastic, etc.)
Required

Optional 4

Just Enough Items (JEI)View Items and Recipes
Optional
RFTools BaseRFTools Base: base mod for all McJty tech mods
Optional
PatchouliAccessible, Data-Driven, Dependency-Free Documentation for Minecraft Modders and Pack Makers
Optional
The One ProbeTOP, a WAILA alternative that shows information about what you're looking at
Optional

Use cases

Who it’s for: Players of NeoForge 1.21.1 modpacks who want a rubber-based material chain and a movement-based power source. Server owners can disable the alternative rubber route in the config.

How it compares

Full comparison

Dynamic Electricity is client-side only, open source under the MIT License, and published for Forge and NeoForge across 1.16.5 – 1.21.1, so it does not need installing on a server. EvolutionTech is client and server, closed under All rights reserved, and targets 1.21.1 on NeoForge only. Electricity+Automation is also client and server under the MIT License, but it targets 1.21.4.

ModLoadersGame versionsEnvironmentUpdated
KJ's ElectrostaticsNeoForge1.21.1Client and server2025-04-24
Dynamic ElectricityForge and NeoForge1.16.5 – 1.21.1Client-side only2025-07-20
EvolutionTechNeoForge1.21.1Client and server2026-01-28
Electricity+AutomationNeoForge1.21.4Client and server2025-06-04

Questions

Does KJ's Electrostatics need McJtyLib?

Yes. McJtyLib is a required dependency and must be installed alongside KJ's Electrostatics.

Must the server have KJ's Electrostatics installed?

Yes. The server and every player need the mod installed.

Can the alternative rubber source be turned off?

Yes. The rubber ore dictionary route is disabled through a config option.

Which versions does KJ's Electrostatics support?

Only NeoForge 1.21.1, with the 1.0.0 file published on 2025-04-24.

In the catalog

KJ's Electrostatics is one of 8,499 Technology mods on ModsFinder, and one of 3,557 Technology mods for NeoForge. 32,366 mods support Minecraft 1.21.1.

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What the author says

Electrostatics is a small mod allowing you to use static electricity to generate early game FE. How powerful this FE generation is is completely configurable. Electrostatics currently adds the following blocks/items. Rubber Boots - used with a carpet to produce static electricity
kjmaster1, on the Modrinth page

Official listing

Owner
kjmaster1
Published
2025-04-24
Updated on Modrinth
2025-04-24
Facts verified
2026-10-15

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