Inverters are used to convert the direct current (DC) electricity generated by solar panels into alternating current (AC) electricity, which we use for most appliances in our homes and businesses. Photovoltaic solar panel systems either have one inverter that converts the electricity generated by the entire solar array, or microinverters which attach to each individual solar module. Single inverters are generally less expensive, but microinverters allow for independent operation of each panel, which is useful if some solar panels are shaded or covered due to weather elements, for example.