To understand feed-in-tariffs you first need to understand the following key terms:

Feed-in-Tariff (FiT)

The FiT (also known as the Clean Energy Cash Back) is a collective term which covers everything related to the electricity your PV system generates and how much you get paid for it. Under the FiT there are two tariffs; the Generation Tariff and Export Tariff 

Generation Tariff

This is a set tariff through which your electricity supplier pays you a fixed amount for every unit of electricity your PV system generates for 25 years, whether you use this electricity or export it to the national grid 

Export Tariff

This is the amount you earn in addition to the Generation Tariff for any electricity you don't use and export back to the national grid, through your electricity supplier

Avoided Costs

These are the savings you make on your electricity bill by not having to import electricity from the national grid, and by generating your own electricity 'on-site'

Imported Electricity

This is the amount of electricity you import direct from your electricity supplier