Electric Potential Energy
Electric potential energy is a form of potential energy that results from conservative Coulomb forces.  An object may have electric potential energy based on its own charge and its position relative to other electrically charged objects.
Electric potential energy describes the potential energy in systems with electric fields that change over time and electrostatic potential energy describes the potential energy in systems with constant electric fields.
Electric potential energy is measured in Joules and often measured in electron volts (1eV = 1.602 x 10^-19 J).