July 15, 2026
Hot rocks, hotter comments
Germany maybe found a new source of renewable energy
Germany drills for underground heat and the comments instantly turn into an energy war
TLDR: Germany drilled test wells near a coal plant set to close and thinks underground heat could help replace some of the warmth the plant now provides. Commenters instantly split between "this is promising" and "here we go again with Germany’s energy drama," dragging nuclear, fracking, and Russian gas into the fight.
Germany may have found a promising new place to get renewable heat: underground. Researchers drilled two test wells near the old Weisweiler coal power plant, which is due to shut down in 2029, and are now exploring whether natural heat below the surface could help warm homes and neighborhoods around Aachen through district heating. In plain English: as coal exits the stage, Germany is poking the ground to see if hot water and rock can help keep people warm.
But the real heat was in the comments. One camp immediately hit the brakes on the headline hype, with readers basically yelling, "Calm down, they didn’t invent new energy, they found a new location for geothermal". Others turned the thread into a full-blown culture-war cage match about Germany’s wider energy choices. Nuclear got dragged in. Fracking got dragged in. Russian gas got very dramatically dragged in. One commenter sighed that geothermal had better not get banned too, while another swerved straight into pipeline geopolitics like the article had personally summoned Europe’s energy ghosts.
And then came the wild conspiracy-energy subplot: why are Germans so anti-nuclear anyway? One commenter floated a Cold War intelligence theory, which gave the thread that classic internet vibe where a local drilling update somehow becomes a grand historical thriller. The funniest running gag was that the title sounded like Germany had discovered a brand new form of power, when the paper is really about a very practical question: can an old coal region swap smoke for warm rocks? On the original paper, the science is careful and early-stage. In the comments, though, it was already Energy Policy WrestleMania.
Key Points
- •The study evaluates geothermal energy as a potential partial replacement for heat now supplied by the Weisweiler lignite power plant, which is scheduled to shut down in 2029 and currently provides about 165 MWth to district heating networks.
- •Two exploratory wells were drilled at Weisweiler: EB1 to 100 m in October 2023 with a 3-component seismometer, and EB2 to 506 m in February 2024 with a double-U heat exchanger.
- •Both boreholes were equipped with fibre optic cables, and EB2 underwent an enhanced geothermal response test to estimate effective thermal conductivity.
- •Drilling data, core material, cuttings, and geophysical logs identified geological units including Palaeozoic deposits at about 70 m depth and helped characterize Upper Carboniferous depositional sequences.
- •The authors describe these wells as the first stage of geothermal exploration in the area, with seismic campaigns and deeper exploration wells planned for future subsurface assessment.