Exploratory activities at the preliminary exploration site in Velika Gorica, conducted as part of the “Development of Geothermal Potential for District Heating” project, have been successfully completed with final reservoir testing. The test results confirmed the presence of significant geothermal potential in the area.
The recorded reservoir temperature exceeds 100 °C, and the well’s capacity fully meets the projected targets of the project. Based on the conducted tests, it has been determined that the thermal output from this single exploratory geothermal well could meet nearly 60% of the heating needs of the Velika Gorica district heating system — representing a major step toward energy independence and sustainability.
In addition to its application for district heating, the geothermal potential in the Velika Gorica area also holds promise for agricultural production, adding further value through the use of renewable energy sources.
To fully realize the geothermal system’s potential for district heating, a second well is planned. This would create a production-injection pair, enabling continuous and safe use of this natural resource.
This is one of the first concrete steps in the use of geothermal energy for heating in continental Croatia. The project is financed through the National Recovery and Resilience Plan (NRRP), and the works were carried out by CROSCO, a member of the INA Group.