ProjectExpansionNeo

More EMC generation, storage, and automation for ProjectEF Neo — on Fabric.

ProjectExpansionNeo brings Project Expansion to Minecraft 1.21.1 / Fabric as an addon for ProjectEF Neo. Expand your EMC setup with additional machine tiers, larger storage options, transmutation tools, and reusable utilities.

ProjectEF Neo is required. This mod is an addon, not a standalone replacement for ProjectE. Use the Fabric versions of all required dependencies.

Features

Expand your EMC production

Progress through additional tiers of EMC collectors, energy relays, and power flowers.
Build beyond the standard ProjectEF production setup with more options for generating and managing EMC.

Store more and automate more

Store EMC in larger EMC stars.
Add EMC links, transmutation interfaces, and the Energy Condenser MK3 to your automation setup.
Organize items with advanced alchemical chests.

Make transmutation more convenient

Use the Arcane Transmutation Tablet for portable transmutation.
Explore alchemical books and additional EMC-powered utilities.
Power supported furnaces with infinite fuel, a reusable item that draws EMC from its bound owner while smelting. Supported machines include vanilla furnaces, blast furnaces, smokers, and ProjectEF’s dark matter and red matter furnaces.

Tune it for your modpack

Configure production multipliers, transfer limits, and utility costs to suit your preferred progression and balance.

Requirements and installation

This version is for Minecraft 1.21.1, Fabric, and Java 21.

Install Fabric Loader 0.16.9 or newer.
Install Fabric API for Minecraft 1.21.1.
Install the full Minecraft 1.21.1 / Fabric JAR from ProjectEF Neo’s releases. ProjectEF Neo 1.3.1 is the current build dependency.
Download the main ProjectExpansionNeo JAR from this project’s Files tab and place it in your instance’s mods folder alongside those dependencies.

For ProjectEF Neo, choose the regular mod JAR, such as ProjectEF-1.21.1-PE1.3.1.jar, not an -api.jar or -sources.jar file. Source JARs are for development and should not be installed as playable mods.

ProjectEF Neo bundles Forge Config API Port and the Fabric Permissions API, so separate installation of those libraries is unnecessary.

For multiplayer, install the mod and its required dependencies on both the client and the server.

Optional integrations

These mods are optional, not required:

JEI or EMI — recipe viewing integration.
Jade or WTHIF (WTHIT) — in-world information integration.
Trinkets — a dedicated transmutation tablet slot, replacing the Curios integration from the original loader version.

Compatibility notes

This project targets Fabric, not Forge or NeoForge. Do not mix JARs built for different loaders.
Configuration uses TOML files, and the mod ID remains projectexpansion.
Migrating existing NeoForge worlds to this Fabric version has not been verified. Back up your world before attempting a cross-loader migration.

Source and support

When reporting a problem, include your Minecraft, Fabric Loader, ProjectExpansionNeo, and ProjectEF versions, relevant mods, reproduction steps, and the relevant log or crash report.

Credits and license

Based on Project Expansion. Original upstream code, resources, and attribution are retained.

Licensed under the MIT License. This is an independent addon and is not supported by the original ProjectE team.

ProjectExpansionNeo

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