A solar inverter is a device that converts the direct current (DC) electricity generated by solar panels into alternating current (AC) electricity that is suitable for use in most homes and businesses. It plays a crucial role in a solar power system by ensuring that the electricity produced by the solar panels can be used to power appliances and devices that run on AC power. The AC voltage varies depending on the standard set in each country, from 110V to 240V. In Australia, the standard is 240V.