Stand-alone invert
A stand-alone inverter is a power inverter that converts direct current into alternating current independently of a utility grid. Stand-alone inverters are often used to convert direct current produced by many renewable energy sources like solar panels or small wind turbines, into the alternating current used to power homes and small industries. These types of inverters are mostly used in residential buildings in remote locations which are devoid of the utility grid and is powered by renewable energy sources