A Feed-in Tariff (FiT) is a rate paid for electricity, fed back into the electricity grid from a designated renewable electricity generation source such as solar or wind power. In Australia, the FiT regulation is the responsibility of the governing state, and can be applied in two forms:
Net feed-in is the calculation of the export or import of electricity, to or from the electricity gridin kilowatt hours (kWh). Or more simply, the net electricity flow from electricity generated by your system less what your site uses. Usually this is calculated on a second by second basis by your meter and allocated in half hour time periods to your account. Therefore your account may show both electricity imported as well as exported. Depending upon your FiT rate, your strategy may vary on how to best take advantage of the free solar power generated.
Gross feed-in is the calculation of the export of electricity to the electricity grid via an independent meter to the one that calculates what you use. You are credited on your electricity account for all electricity generated by your system that is exported back into the electricity grid in kilowatt hours (kWh). Your site usage plays no part in the calculation of your solar power generation and export to the electricity grid.
Rates of pay and tariff schemes may differ from state to state, and from energy retailer to energy retailer. Please check with your energy retailer for the FiT scheme available to you.