There's some good writing in this article ... for example these two paragraphs contrasting the flashy deep deep drilling with the solid, reliable, simple shallow ground source heat pumps that are becoming commonplace:

The geothermal projects that grab headlines — deep wells tapping magma-adjacent rock or enhanced geothermal systems requiring hydraulic stimulation — come with big promises and even bigger risks. These are the moonshots: billion-dollar drill jobs that bank on hitting the geological jackpot. They look great in press releases and glossy investor decks, but they’re classic Bent Flyvbjerg long-tailed megaprojects, where a handful of winners hide a long trail of cost overruns, dry wells, seismic surprises, and flat-out failures. Every extra kilometer drilled multiplies uncertainty, and the moment you start fracturing deep granite, you’re not just managing energy, you’re managing public fear and regulatory scrutiny. The odds of blowing out your timeline or your budget are baked into the rock itself.

Meanwhile, boring old shallow geothermal for district heating barely gets a mention, despite being the quiet workhorse with a moderate and highly manageable risk profile. We’re talking about low-variance projects: modest depth boreholes, proven heat pump tech, and heat delivery systems that piggyback on existing infrastructure. No exotic geology. No induced seismicity. No billion-dollar wells. These projects don’t aim to change the world overnight; they aim to decarbonize buildings today. And they actually work, over and over again, in country after country. It’s not glamorous, but it’s dependable, replicable, and scalable — exactly the kind of solution that survives contact with the real world. While the deep drillers roll the dice, district-scale geothermal quietly replaces gas with heat pulled gently from the earth, no fireworks required.