Energy is formally defined as the capacity to do work (whilst work is defined as an action displacing an object by applying a force).

Energy is a property or attribute present in bodies and material systems, and in virtue of it they can employ an action or modify their initial condition or ...

Creatures that dispense with the need to have a body altogether. Energy Beings are frequently Sufficiently Advanced or Precursors.

In Role-Playing Game terms, it's the combination of Hit Points, Magic Points, and Experience. Transferring it may cause physical changes that are Liquid Assets.

The Energy Weapon trope as used in popular culture. Implements of destruction that deal damage by projecting elementary particles, nearly always observable ...

The Energy Absorption trope as used in popular culture. Some devices, characters, Humongous Mecha and/or supernatural beings have the power to absorb Ki, …

Magical power sources include: · Blood Magic · Emotions: They can be used for self-nourishment, to empower an attack, or to fuel certain forms of Magitek.

This trope is about cases when the energy or energy source itself is the money. In some cases, an energy crisis is equivalent to an economic recession.

The Monster of the Week is wreaking havoc. The heroes step in and blast it with all they have, but what's this? The creature isn't hurt at all!

A special attack that uses the combined energy of everyone in a cast with the coup-de-grace, usually but not necessarily, being delivered by the lead.