A solar inverter is a device that converts the direct current (DC) electricity produced by solar panels into alternating current (AC) electricity that can be used to power household appliances and feed into the grid. It plays a crucial role in solar energy systems by ensuring that the electricity generated by solar panels is compatible with standard household electrical systems. In addition to converting DC to AC, some solar inverters also include features such as maximum power point tracking (MPPT) to optimize energy production and monitoring capabilities to track system performance.