ALPHAXIOMS Geothermal News & Energy Research

Versailles Embraces Deep Geothermal Energy to Decarbonize Its District Heating Network The historic city of Versailles in France's Yvelines department is taking a bold step toward sustainability. On December 18, 2025, Mayor François de Mazières and Franck Lacroix, Deputy Managing Director of Engie, signed a 32-year concession agreement. This partnership entrusts Engie with transforming, modernizing, and greening the city's district heating network, aiming to slash carbon emissions while providing reliable, renewable heat to residents. At the project's core is deep geothermal energy, harnessing the natural heat from underground aquifers. The site targets the Dogger aquifer, a limestone formation from the Middle Jurassic period, located about 1,500 meters below the Paris Basin. Water in this layer reaches temperatures of around 60°C, making it ideal for heating. The plan involves drilling a geothermal doublet two wells: one to extract hot water and another to reinject cooled ...

Włocławek Goes Deep: Poland's Latest Leap into Geothermal Energy – A Game-Changer for Clean Heating? By: Robert Buluma Deep beneath the historic streets of Włocławek, a quiet revolution is about to begin. On January 7, 2026, the city signed a landmark contract to drill the exploratory geothermal well Włocławek GT-1, plunging approximately 2700 meters into the earth right next to the local heating company, Miejskie Przedsiębiorstwo Energetyki Cieplnej (MPEC). This isn't just another construction project—it's a bold step toward ditching coal, slashing emissions, and tapping into the Earth's endless heat to warm homes in an eco-friendly way. In the coming days, massive drilling rigs will start humming to life, boring through layers of rock and sediment in search of hot, mineral-rich waters that could completely transform how Włocławek heats its apartments, schools, factories, and public buildings. If the results are positive, this single borehole could open the door to a f...