Slovenia implemented a sophisticated system of feed-in tariffs on November 1, 2009 in order to meet its target of 25% renewable electricity generation by 2020.
Renewable generators are offered two tariffs: fixed tariffs or "Guaranteed Purchase" for projects up to 10MW and "Operating Support" for all projects up to 125MW. Operating support is the Slovenian version of the bonus payment system where variable costs reflect changes in the market price of electricity. The Slovenian Energy Agency determines the market price annually used in the calculation of operating support.
In comparison to Slovenia's earlier feed-in tariffs, the revised policy has increased the length of contracts and caps to the sizes of projects, including a review of technology costs to be completed every five years. It has also implemented a 7% solar PV tariff digression through to 2013.
In addition, Slovenia offers bonus payments for biogas plants using high percentages of farm wastes and "operating support" CHP plants fired with wood biomass.
Slovenia has also introduced tariffs for wood-fired combined heat and power plants.