Planck energy

In physics, Planck energy, denoted by EP, is the unit of energy in the system of natural units known as Planck units. In physics, Planck energy, denoted by EP, is the unit of energy in the system of natural units known as Planck units. EP is a derived, as opposed to basic, Planck unit. It is defined by: where c is the speed of light in a vacuum, ћ is the reduced Planck's constant, and G is the gravitational constant.