Green Therma Selects H&P to Drill Denmark’s Longest Geothermal Well for Aalborg Heat4Ever Demonstration Denmark is moving from geothermal ambition to execution. Green Therma has selected Helmerich & Payne to drill the Heat4Ever demonstration well near Aalborg, a project that could become one of the country’s most technically ambitious geothermal developments and a meaningful test of closed-loop district heating. A milestone for Danish geothermal The Aalborg Heat4Ever project matters because it is designed to prove that geothermal heat can be delivered without relying on a natural hot-water reservoir. Instead of producing groundwater from a conventional geothermal field, the system uses a closed-loop pipe-in-pipe design that circulates the same fluid downhole, heats it in contact with hot rock, and returns it to the surface for district heating use. That distinction is important for Denmark, where district heating is already a major part of the energy system ...
Croatia Approves Geothermal Exploration in Kotoriba: No Full Environmental Impact Study Required By: Robert Buluma Croatia has taken a decisive step forward in its clean energy transition with a new approval that underscores its commitment to renewable energy development. The Ministry of Environmental Protection and Green Transition has ruled that the upcoming geothermal exploration project in Kotoriba—specifically in Zones 2 and 3—does not require a full Environmental Impact Assessment (EIA). This decision effectively allows Viola Energy Generation d.o.o. to proceed with drilling up to four geothermal exploration wells, marking a major milestone for the country’s geothermal sector. As Europe accelerates its shift toward sustainable and energy-secure solutions, Croatia’s proactive stance positions it as a rising leader in geothermal development within the region. A Strategic Decision for Croatia’s Renewable Energy Future In its resolution dated 30 October 2025 , the Ministry concluded...