Mekanism

Mekanism is a mod by aidancbrady and unpariedbracket, with contributions from Calclavia, micdoodle8, and pixlepix. It is centered around a tiered system of technological advancement. Mekanism has four tiers of its machines and crafting components: Basic, Advanced, Elite, and Ultimate. All of these tiers are used in the various core features, such as Factories, which are higher-capacity versions of the basic machines, and Energy Cubes, used to store energy. Mekanism uses its own energy system of Joules, but is compatible with (and can be configured to use) Redstone Flux, Minecraft Joules, and Energy Units.

Modules
Mekanism comes in three different modules, Mekanism, Mekanism Generators, and Mekanism Tools.

Mekanism
This is the core of Mekanism. It contains all of the basic features and dependencies for the other modules to use. It is playable without the other modules.

Mekanism Generators
This module contains all of the energy generators that are added by Mekanism.

Mekanism Tools
This module contains all of the tools, including the famed Paxel, and the necessary machines to make them.

Joules conversion rates
These conversion rates are set by default. This can be changed in Mekanism's config file.