Can you tell us what upgrades work best with what machines, generators, etc....i dont want to be using an upgrade in a machine that won't use it.......

Example, energy efficiency upgrade, what machines can use this properly ?

also energy capacity upgrade doesn't seem to want to be made, no recipe ? also what machine can use this one ?

Are you sure you are not in the wrong repository, because i don't have any upgrades in my mods 🤣.