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Posts Tagged ‘Quaise Energy’

Over the coming decades, superhot geothermal will race past intermittent, low density, non-dispatchable alternatives as the leading source of renewable energy.

Currently, geothermal pioneers like Mazama and Quaise are focusing on a volcanic area in Central Oregon, a superhot “hot spot.” The area is unique in that temperatures of 700°F occur at subsurface depths of ~15,000′. (By comparison, the highest bottomhole temperatures in high-pressure, high-temperature (HPHT) wells in the Norphlet and Wilcox formations in the Gulf are <420°F.)

Mazama Energy’s second geothermal well, Athena, at Newberry, Oregon, reached a depth of 10,350 feet through volcanic rock in 15 drilling days. Their Project Athena builds on the 2025 record breaking effort at Newberry where Mazama created the world’s hottest engineered geothermal system (EGS) pilot at 629°F (331°C). Mazama continues drilling and is targeting temperatures exceeding 750°F.

Quaise Energy’s intends to establish the world’s first superhot geothermal energy power plant with Project Obsidian. See the video below.

The extent to which Quaise will employ their “Star Wars” millimeter wave gyrotron drilling system on the relatively shallow Oregon wells is uncertain. Gyrotron drilling will be critical if superhot power plants are to be established in areas where much deeper wells are needed to reach superhot temperatures.

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The Hot Rock Act (attached) would authorize a large grant program for superhot, ultradeep geothermal energy research and development. Here is the gist of the bill:

  • $16 million/yr (2027-2031) for high temperature completions. equipment, and supercritical fluids research and development.
  • $40 million/yr (2027-2031) for a test site.
  • $16 million/yr (2027-2031) for hot dry rock geothermal systems research and development.
  • $30 million/yr (2027-2031) for achieving program milestones.
  • $5 million/yr (2027-2031) to study the risks associated with hot dry rock geothermal energy.
  • $10 million/yr (2027-2031) for geothermal industry workforce training.
  • $10 million/yr to support BLM and Forest Service authorization programs for hot dry geothermal.

That’s a total of $127 million/yr for the next 5 years. Is this necessary?

Press reports indicate that Quaise is raising $200 million to develop its first commercial geothermal power plant. If superhot geothermal is as promising as many of us believe, companies should be able to attract sufficient private capital without financial support from the Federal govt.

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Superhot geothermal is exciting because of the unlimited potential, universal availability, Star Wars drilling technology, and the dynamics of supercritical fluids.

There are still hurdles to clear, and commercial power generation is 5+ years away, but the promise is tantalizing.

Gyroton millimeter wave drilling technology

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Excerpt from the Quaise video:

As we descend into hotter, deeper tiers, the process shifts from pressure-driven to density-driven stimulation. With larger density contrasts between the injected water and pore fluid in the rocks, density takes the lead. The deeper we go, fracturing becomes easier, not more challenging, and reduces the need for massive pumping fleets.

It all results in a superhot subterranean network sweeping away 10-100x more heat than all other forms of geothermal. We are sending water coursing through engineered permeability, harnessing Earth’s most abundant energy and powering the next century of global innovation.

Supercritical fluid dynamics are thus the key to superhot geothermal completions. Water above 374∘C374 raised to the composed with power C and 22 mega pascals (3191 psi) enters a supercritical state with liquid-like density and gas-like viscosity. The water that is injected into a hot, supercritical reservoir is thus much denser than the surrounding superhot fluid. The injection of relatively cool water into superhot rock creates and widens fractures increasing permeability without increased pumping pressure.

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A short Quaise video (below) describes how conventional and millimeter wave drilling can be combined to reach superhot geothermal energy sources.

Keep in mind that superhot (300-500 deg. C) energy can be reached with conventional drilling at sites with high geothermal gradients. These “tier 1” sites will be the first targets (second video below).

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HOUSTON (7/22/2025) – “Quaise Energy, a leading developer of grid-scale superhot geothermal energy, today announced it has successfully drilled to a depth of 100 meters using its proprietary millimeter wave technology at its field site in Central Texas. This achievement sets a record for millimeter wave drilling and marks a major step forward in unlocking the Earth’s vast geothermal energy as a scalable, baseload energy source.“

  • Prior to this year, millimeter wave drilling had only been demonstrated in the laboratory (a few centimeters deep).
  • The granite drilled during the field test is the same type of hard rock found in the basement layer of the Earth’s crust.
  • Quaise has plans to build a gyrotron with 10x more power.
  • A pilot power plant in the Western U.S. is planned for as early as 2028.

Related posts

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Recently, Quaise Energy showcased millimeter wave drilling on a full-scale Nabors rig, and moved one step closer to superhot geothermal power production.

This is the first-ever hybrid drilling rig, combining conventional and millimeter wave capabilities.

Quaise plans to drill superhot geothermal wells that can generate abundant baseload power in record time. They believe there is no other energy solution capable of the same scale and speed.

Excellent New Atlas article

“The cube sends electomagnetic energy to the drill bit to melt rock – New Atlas photo
Core showing vitrified granite/basalt walls of the borehole – New Atlas photo

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Good video:

More on Quaise Energy

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“Last month, we demonstrated millimeter wave drilling outside of the lab for the very first time.“

“Millimeter wave drilling is the keystone of superhot geothermal. It’s the only way to access the resource at scale while reaching economic and power parity with fossil fuels. Over the coming months, two more drilling field tests will pave the way to our first commercial developments.”

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Quaise Energy’s gyrotron (left) can vaporize boreholes through rock.

See this very good Noema Magazine article.

“In an age when energy policy is so often hostage to fierce partisanship, there is hope that geothermal can be the one clean energy solution that could satisfy climate change campaigners and the ‘drill baby drill’ lobby alike.”

Updates on Quaise Energy’s highly anticipated gyrotron field test and related information:

  • “Lab-test data suggest that the gyrotron’s beam will lose only around 50% of its power at a depth of six miles. To put that into perspective, the attenuation of a rotating drill string at 10 kilometers can be 98%,” Araque said. “You only get 2% of the mechanical power down to the bit.”
  • Quaise’s field test will take place on a disused oil drilling pad in the northern exurbs of Houston. Next month, a gyrotron 100 times as powerful as the one in the laboratory will be pointed at the earth and switched on.
  • By spring, Quaise will have erected another platform in a disused quarry near Marble Falls, a city on the Colorado River northwest of Austin.
  • Quaise’s ultimate ambition is that its drills can be “dropped-in” to existing oil and gas wells.
  • By 2026, Quaise should be positioned to launch its first commercial venture. Within that short timescale, an answer to the question of whether superdeep geothermal can be truly transformative should come into clearer focus.

Quaise’s Araque: “Our civilization uses 25 terawatts, and it doubles every 25 years. By 2050 we need 50 terawatts. By 2100 we need 200 terawatts. When you look at those numbers, you realize that diffuse and intermittent renewables don’t have the scale. The externalities are too high.”

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