Electricity is a real source of energy according to scientific evidence and experimentation. Observation of phenomena like lightning and static electricity helped raise questions about the source of electrical energy. Scientists have developed theories like atomic theory to explain electricity, proposing that the movement or discharge of electrons between atoms produces electrical currents. Experiments show electricity can be generated by things like copper wire and magnets, and electrical measurements can quantify properties like voltage, amps, and watts. Together, observation, scientific theories, experimentation, and measurement support the conclusion that electricity is a legitimate source of energy.