Perpetual energy

Perpetual energy may refer to:


 * Perpetual motion, the property of an imaginary device that, once started, continues to move forever with no input of external energy
 * Renewable energy, energy collected from resources that are naturally replenished on a human timescale
 * Perpetual Energy Inc, a Canadian company owned by Clay Riddell
 * Perpetual Energies, a 1987 studio album by Ray Buttigieg
 * "Perpetual Energy" (Cow and Chicken), an episode of Cow and Chicken