Grid-interactive renewable energy systems enable you to demonstrate your personal commitment to a renewable energy future. With the OutBack grid-interactive system, backup AC power is made available 24 hours a day in the event of a utilty outage, providing reliable power and peace-of-mind. At night, the inverters automatic power save mode ensures that energy is not wasted by needlessly charging yoru batteries from the utility grid. An average conversion efficiency of 91% provides greater savings and a shorter time period for system payback.