have fixed panels or compromise by incorporating some limited manual adjustments, which take into account the different 'elevations' of the sun at various times of the year. The best elevations vary with the latitude of your location. In the Southern Hemisphere, these panels should face as close to as possible.
Grid-Interactive Inverter: The Inverter takes the DC power produced by the panels, converts it to AC, and feeds it back into the main electricity grid. Some systems may have a number of smaller Inverters connected in parallel.