A grid-tie solar transfer switch is specifically used with a grid-tied solar power system. That means it allows your system to draw power from the grid when necessary, such as during bad weather. The Generac PWRcell Inverter is a storage-ready inverter that connects to the PV LinkTM optimizers and PWRcell Batteries to form the Generac PWRcell system. However, this growth. On-grid solar inverters are crucial for converting the direct current (DC) generated by solar panels into alternating current (AC) used by household appliances or fed back into the electrical grid.