The use of electrical energy storage unit (EESU) technology can provide power averaging for utility grids. Such EESUs can also be used to construct a system capable of storing electrical energy over specified periods (e.g., 24 hours) to provide peak power to homes, commercial sites, and industrial sites. By charging these power averaging units during non-peak times and then delivering the energy during peak-demands times, more efficient utilization of the present utility-grid power-generating plants and the already existing power transmission lines will be accomplished. These systems also have the capability of isolating users from utility-grid power failures, transients, and AC noise.