Globally, feed-in tariffs (FITs), also known as 'advanced renewable tariffs' (ARTs) or 'renewable energy payments' (REPs) in North America, have gone from strength to strength. Such schemes pay renewable energy producers a set rate (tariff) for each unit of electricity fed into the grid, and generally oblige power companies to purchase all electricity from eligible producers in their service area over a long period of time -- usually 15 to 20 years.

The ultimate goal is to reach a point at which there is no longer any need to support the renewables industry. Indeed, much of the need for support is in response to a requirement to overcome some of the barriers to wider and faster deployment, for example the subsidies that are paid to the conventional energy industry.