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  High-Efficiency Solar Inverters Save You Money ! A highly efficient solar inverter will save you money over the life of your solar power system, as the inverter actually operates as "the heart" of a photovoltaic installation. A grid-tie inverter (GTI) is a special type of inverter that converts direct current (DC) electricity into alternating current (AC) electricity and feeds it into an existing electrical grid. An inverter is required for all solar power systems to make the electricity usable in home/office settings. All photovoltaic panels produce electricity in DC current. The purpose of an inverter is to change the DC into AC so that it can be used by appliances in the home or office and the community electric grid. When installing a system, never underestimate the system's needs for a solar inverter and purchase one that handles a smaller capacity than necessary in an attempt to save money. That decision can be costly in the long run. A better way to cut cos...