What’s an inverter?
Photovoltaic systems create direct current (DC). In order to make use of this form of electricity it must be converted in to alternating current (AC), the type of electricity we use in North America. For a grid-tied, non-battery system (the most common type of PV installation), this is achieved by installing an inverter. High-voltage DC inverters are the least expensive to wire, and only in special circumstances would you require a low-voltage inverter (when there’s more than three panels, shade, or batteries). In general, the most cost-effective grid-tied non-battery inverters are those in the 2- to 6-kilowatt range.
