ALPHAXIOMS Geothermal News & Energy Research

Deep geothermal energy is quietly becoming one of Europe’s most powerful tools for decarbonizing heat, and the new “Tiefenkraft” project by OMV and Energie Steiermark in the Graz region shows exactly why it matters – and how it will work in practice. By: Robert Buluma Why Deep Geothermal Matters Now Across Europe, the heat transition has become the missing piece of the climate puzzle: electricity is decarbonizing fast, but buildings still rely heavily on fossil fuels for heating. District heating systems offer a way to decarbonize entire cities at once, and geothermal energy is uniquely suited because it delivers constant, weather-independent heat. In Graz and Styria, the deep geothermal potential of the subsurface is now being tapped at scale, promising a regional, climate-friendly heat supply that can run 24/7 for decades. The “Tiefenkraft” Project At A Glance “Tiefenkraft” is the name of a joint deep geothermal initiative by OMV and Energie Steiermark focused on the greater Gra...

Seeing Through Stone: How the Géoscan Project Is Opening a New Frontier for Geothermal in Greater Paris By Robert Buluma   The Île-de-France region, home to the sprawling metropolis of Paris and its surrounding suburbs, is already the undisputed champion of deep geothermal energy in Europe. With 54 active installations as of 2025, no other region on the continent comes close. The eastern and northern parts of the region have been tapping the hot waters of the Dogger limestone aquifer for decades, heating tens of thousands of homes with clean, renewable energy. But what about the west? What about the south? For years, those areas remained a geothermal blind spot. The subsurface was less understood. The geology was more complex. Project developers hesitated to invest because the risk of drilling a dry well was simply too high to justify. The result was a lopsided geothermal landscape: thriving activity in the east and north, cautious silence in the west and south. On May 19, 2026, th...

Versailles Embraces Deep Geothermal Energy to Decarbonize Its District Heating Network By Robert Buluma 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 t...