A quiet energy revolution is taking shape beneath the forests and old lava flows of central Oregon.
Reasons to be Cheerful reports that companies including Mazama Energy are developing new geothermal projects around the Newberry Volcano, where unusually hot rock sits close enough to the surface to make next-generation drilling more practical. The basic idea is beautifully simple: use the Earth's own heat to make reliable clean power.
Hotter rock, more power
Traditional geothermal power has worked for decades, but recent advances in drilling, cooling systems and horizontal wells are widening what may be possible. Mazama says its superhot-rock approach can send water into rock at very high temperatures, creating a supercritical fluid that can drive turbines with much higher energy yield than conventional geothermal systems.
The company says the method could use fewer wells and less water while producing far more power. At its pilot site, Mazama reached temperatures of 629 degrees Fahrenheit, and it is planning a 15-megawatt demonstration before scaling further.
A steadier clean-energy tool
The hopeful part is that geothermal can complement solar and wind because the heat below ground is available day and night. The International Energy Agency has estimated that, if technology keeps improving and costs fall, geothermal could cover a meaningful share of electricity-demand growth by 2050.
There are still hard engineering problems to solve, especially at extreme temperatures. But the progress is encouraging: old oil-and-gas drilling ideas being repurposed, cleaner energy becoming more practical, and a hidden heat source under our feet getting a serious second look.
Source: Reasons to be Cheerful, reporting on superhot-rock geothermal projects in Oregon, Mazama Energy, Fervo Energy and wider geothermal research.
