According to the Ordinance on Fees for Incentivizing Electricity Production from Renewable Energy Sources and Cogeneration (Official Gazette 33/2007),), that was passed by the Government of Republic of Croatia, the incentive fee is collected from all electricity customers in Croatia starting from 1 July 2007.
The collected fees are used by Croatian Energy Market Operator for payment of incentive price to eligible producers for electricity delivered to the power system, in compliance with the Tariff System for the Production of Electricity from Renewable Energy Sources and Cogeneration (Official Gazette 33/2007).
The incentive fee is collected through usual electricity payments, hence from tariff customers through money order of HEP-Operator distribucijskog sustava d.o.o. (by specific distribution area) and from eligible customers by their suppliers.
The amount on electricity bills due to incentive fee for year 2012 is 0.005 kn per kilowatt-hour (kn/kWh) + VAT, according to the Ordinance on the Amendments to the Ordinance on Fees for Incentivizing Electricity Production from Renewable Energy Sources and Cogeneration (Official Gazette 144/2011). Every customer can easily calculate the amount he/she pays for incentivizing electricity production from renewable energy sources and cogeneration by multiplying the electricity consumed (kWh) and the incentive fee (kn/kWh).
Source Serbia-energy.com