Prenzlau’s Geothermal Breakthrough: A Decisive Step Toward a Fully Renewable Heat Future By: Robert Buluma The city of Prenzlau, located in northeastern Germany, has reached a major milestone in its transition toward sustainable energy. In December 2025, Stadtwerke Prenzlau announced a decisive breakthrough in its geothermal project after successfully encountering geothermal water at a depth of 983 meters. This discovery represents a critical step forward for the city’s ambition to fully decarbonize its heat supply and positions Prenzlau as a leading example of how medium-sized towns can harness geothermal energy for district heating. The geothermal water discovered during drilling operations is estimated to be around 200 million years old and is contained within a saline sandstone formation deep underground. With a temperature of approximately 44°C and a planned production rate of 130 cubic meters per hour, the resource offers a reliable and continuous source of renewable heat. A test...