How to work with energy in forge?

Question

Java

I want to understand how energy works in mods like thermal expansion. That is, how it is stored, transmitted, and used in mechanisms.

Answer 1

Briefly explain for a long time, take the source and figure it out. They are on github.
Nothing complicated, the amount of energy consumed by the device, transmitted by wires, generated by generators are variables of the corresponding classes.
of type public int power; etc.
All info is stored in NBT