Electrical Power represents rate at which EnergyElectrical Energy is the product of electrical Power and tim... is transferred through an electrical circuit. As the product of VoltageThe electrical force or electric potential between two point... and CurrentA flow of charged particles, usually electrons, in an electr..., electrical Power provides the ability to produce real work. Measured at an instant of time, Power flow is reflected in kiloWatts (kW), MegaWatts (MW) or GigaWatts (GW).
In addition, in an Alternating Current (AC)Utilised by most GW-scale Power Systems globally, Alternatin... system, Power is comprised of three components: Real PowerMeasured in MW, is the component of electrical Power that is..., Reactive PowerMeasured in MVAR, sustains the electrical field in Alternati... and Apparent PowerThe product of voltage and current in an AC circuit, measure....
While they are closely related, it is very important to understand the distinction between Power and Energy.