The solar panels produce direct current (DC) electricity, which is then converted to alternating current (AC) by the solar inverter. However, simply. . Solar inverters sync your solar system with the grid by matching voltage, frequency, and phase. Anti-islanding protection prevents backfeeding during outages. For safety reasons, they turn off when the grid goes down to prevent electricity from back-feeding through power lines that might have repair workers servicing them. The inverter converts the DC electrical current produced by the solar array, to AC electrical current. . Each solar panel contains multiple photovoltaic (PV) cells that capture sunlight and convert it into DC (direct current) electricity. This means that homes and businesses can't directly use DC. .