Croatia recorded a landmark year for renewable energy in 2025, with solar, wind and renewable thermal power sources taking a leading role in the national electricity system for the first time. According to provisional data from the Renewable Energy Sources of Croatia association (OIEH), solar power. Just over one fifth of Croatia's electricity comes from solar and wind power. Renewables are making only modest gains in Croatia. Economy Minister Ante Susnjar said that the country has already channeled around 4 billion euros into renewable incentives, arguing that.