Thermal: Extra

Thermal Extra is an addon for Thermal Expansion that significantly expands the capabilities of the Thermal series through the implementation of additional upgrades and materials.
New Metals
The mod introduces four unique metals: soul infused, shellite, twinite, and dragonsteel. Each of these materials has its own molten state and is available in various forms - ingots, nuggets, blocks, and dust. Additionally, for each metal, there is a special hardened glass block created based on it.
Upgrade System
Thermal Extra adds five upgrade tiers arranged in the following sequence of increasing power: soul infused → enderium → shellite → twinite → dragonsteel → dragonsteel infused. It should be noted that dragonsteel and its enhanced version are compatible only with a limited set of upgrade types.
Features
Starting from version 3.0.8-1.20.1, the mod includes a frost dynamo generator that produces RF energy from cold items and blocks, opening up new possibilities for power generation in your Minecraft world.