Answer :
The purpose of a grid-tie inverter in solar power installations is B). To convert the variable DC output of solar panels into a stable AC output that can be fed into the electrical grid.
The primary function of a grid-tie inverter is to take the direct current (DC) produced by the solar panels and convert it into alternating current (AC) that can be used by household appliances and fed into the electrical grid. This allows any excess electricity generated to be sold back to the utility company, providing a financial benefit.
Other options, such as storing energy in batteries, increasing the voltage of the solar panels, or isolating the solar panels from the grid, are not the primary functions of a grid-tie inverter.
