WHAT IS IT? Grid-interactive or grid tie inverter (GTI) is an electronic device that converts direct current (DC) voltage to alternating current (AC) voltage and that can operate in parallel with the electric utility grid. The DC voltage normally comes from photoelectric panels or energy storage batteries. GTIs allow interconnection of renewable energy systems with the grid. The power processing circuits of a GTI have similar working principle as that of a conventional stand-alone DC-AC SMPS.
