Croatia's energy market operator HROTE said it has set July 4 as the deadline in a public tender aimed to back the production of electricity from renewable sources through market premiums for 630 MW, it said.

The public tender is exclusively for new projects - 300 MW of wind and solar, 8 MW each for biomass and biogas, 4 MW for small hydroelectric power plants and 10 MW for geothermal power plants, HROTE said in a statement on Friday.

Market premium is an incentive system in which HROTE pays to producers the difference between the contracted price and the market price of electricity.

The total quota equals some 60% of the current portfolio in the incentive system run by HROTE, the market operator has said earlier.