Croatia’s geothermal sector continues to gain momentum. The Ministry of Environmental Protection and Green Transition has granted Viola Energy Generation d.o.o., owned by the Turkish corporation Soyak Energy, approval to proceed with geothermal exploration drilling in the Kotoriba exploration area (zones 2 and 3) in Medimurje County, northern Croatia.
The decision, issued on 30 October 2025, confirms that the company’s planned exploration wells do not require a full environmental impact assessment. This clearance enables preparatory drilling works to begin under a defined monitoring programme for soil and groundwater quality.
Another step in Croatia’s geothermal growth
The Kotoriba project is part of Croatia’s growing wave of geothermal exploration in the Drava River basin — an area recognised for its deep low-enthalpy resources and proximity to existing infrastructure. Similar exploration efforts are underway in nearby Legrad and Draskovec, reflecting the country’s broader push to expand domestic renewable-heat and power generation.
By facilitating streamlined permitting for low-impact exploration, the government is signalling its intent to accelerate geothermal resource mapping and development, a key component of Croatia’s national energy transition strategy.
From exploration to utilisation
If drilling results confirm viable geothermal reservoirs, Viola Energy is expected to advance toward full resource development — potentially contributing to future district-heating systems or small-scale power production in the region.
The approval represents another practical example of Croatia’s supportive regulatory climate for geothermal investors, balancing environmental protection with faster project deployment.
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Source: Decision by Ministry of Environmental Protection and Green Transition of Croatia (pdf, Rjesenje, 30 Oct 2025)
