How Does Solar Work?

Solar PV grid-connected system


A grid connected solar PV system uses solar modules as the power generation source. The power produced is fed into an inverter which changes the DC power output of the solar array to AC power compatible with Australia’s standard power grid.

The system allows for any onsite loads to be powered by a combination of power generated by the PV system and power drawn from the mains power grid. Excess power generated by the PV system will be exported to the power grid.

The way in which power use is monitored and electricity charges calculated will differ depending on the metering model in place. Metering is determined by the local network provider.

The major components of a grid connect PV system are:

  1. PV array
  2. Inverter
  3. Meters

In addition to these major components are the necessary cables, junction boxes, protection device, switches, lightning protection and signage.

How does a grid-connected PV system work?

A grid-connected PV system uses sunlight that strikes the solar array to generate DC power. This DC power is converted to AC power via the inverter and the AC power is supplied (or fed) into the electricity grid.