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 ...
Breakthrough in Taiwan’s Deep Geothermal Energy: Academia Sinica and CPC Corporation Drill Nearly 4,000 Meters in Yilan and Find High-Potential Reservoir Published: December 10, 2025 By: Robert Buluma In a historic milestone for Taiwan’s renewable energy journey, Academia Sinica (Central Research Academy) and Taiwan’s state-owned CPC Corporation have successfully completed the island’s first-ever “deep geothermal exploratory well” in Yuanshan Township, Yilan County. The well reached a depth of nearly 4,000 meters, recorded a bottom-hole temperature close to 150 °C, and confirmed the existence of an upwelling heat source beneath the northern Yilan Plain. Researchers are now calling it a “high-potential geothermal reservoir” that could become a cornerstone of Taiwan’s green energy transition. From Anxiety to Excitement: The Temperature Surprise Dr. Ji-Chen Lee (李建成), principal investigator of the “Taiwan Geothermal Research and Technology Development Project” and researcher a...