PV modules produce DC electricity. This can be used to charge batteries or power specialist DC appliances, but to use this electricity for standard appliances or supply it to the electricity grid, it has to be converted to AC electricity by an inverter. 

Solar arrays are usually connected to inverters that convert the power from PV arrays into an output of 240 V AC power. In a domestic grid-connected installation, this inverter will interact with the grid supply to the house, so that it can supply the house’s power needs and feed power to the grid when there is an excess.

In installations with multiple arrays, like the DKASC, Alice Springs, the output from the inverters is marshalled at a switchboard before connecting to the grid. Usually, a meter is also installed to record electricity flowing in either direction. A transformer often steps up the voltage of the electricity to a higher voltage for transportation after the power is marshalled.