Energy, or EN, is what allows (or doesn't allow) Nanovor to use moves.

The standard rate of EN income is 2 EN per round, unless modified by an override.

Some Nanovor use little EN, such as Electropod 1.0, and stockpile energy for other Nanovor.

Some Nanovor use lots of EN, such as Tank Strider 2.0, which practically burns EN to do anything.