The MIT spinout trying to reach the largest untapped power source on the planet - by melting a hole straight to it.
The wordmark with the sharp angles. Those letterforms are supposed to look like millimeter waves and power-line trusses. Branding, but the kind with a thesis.
In a field somewhere in the western United States, a machine is pointing a beam of energy at a slab of rock and the rock is simply ceasing to exist. There is no drill bit. There is no grinding. There is a faint smell of, by all accounts, toasted granite.
That machine belongs to Quaise Energy, a company that has spent the better part of a decade insisting on a deeply unfashionable idea: that the cleanest, most abundant energy source on Earth is not the sun, not the wind, but the planet's own heat - and that we have been failing to reach it not because it isn't there, but because our drills give up too soon.
Quaise is small. Around 70 people, headquartered in Cambridge with operations reaching toward Houston, the city that knows a thing or two about drilling. But the ambition is not small at all. The company wants to drill the deepest holes humans have ever made, tap rock hot enough to turn water supercritical, and pipe that heat into power plants that already exist. The whole pitch fits on a napkin. The execution requires bending physics that mostly lived inside fusion laboratories.
Geothermal has always worked. The inconvenient part was that it only worked in the handful of places where the heat came conveniently close to the surface.
// the problem in one sentenceHere is the awkward truth at the center of geothermal energy: the heat is everywhere. Go down far enough, anywhere on Earth, and you hit rock hot enough to boil oceans. The resource is, for all human purposes, inexhaustible. It is also extremely good at being clean and constant - no clouds, no calm nights, no seasons.
So why does geothermal supply a rounding error of global electricity? Because reaching the good heat means drilling through kilometers of hard, hot rock - granite, basalt, the stubborn stuff - and conventional drill bits hate hard, hot rock. They wear out. They melt. They turn an engineering problem into an accounting nightmare. The result: geothermal got stuck in the few volcanic neighborhoods where the heat rose to meet the drill. Iceland, parts of Kenya, a slice of California. Lovely places. Not a global energy strategy.
Quaise's founders looked at that constraint and decided it wasn't a law of nature. It was just a tooling problem. And tooling problems, unlike laws of nature, can be solved by people who are stubborn enough.
If the only thing standing between civilization and limitless clean heat is that drill bits are bad at granite, then perhaps the answer is to stop using drill bits.
// the bet, restatedThe unlikely hero of this story is a piece of equipment called a gyrotron - a device that produces high-power millimeter waves. For decades its day job was heating plasma inside fusion reactors. At the MIT Plasma Science and Fusion Center, researcher Paul Woskov had a different thought: point that beam at rock, and the rock doesn't just heat up. It vaporizes.
Enter Carlos Araque. He had spent nearly 15 years at Schlumberger, the oilfield services giant, learning intimately how the world drills and why it stops. By 2018 he was technical director at MIT's startup incubator, The Engine, when he encountered Woskov's work. Together with Matt Houde, and with Aaron Mandell helping turn a lab curiosity into a company, Araque founded Quaise to commercialize the idea. Early backing came from Vinod Khosla; The Engine led the seed.
The founding team had the rare combination this required: someone who understood rock and rigs from the inside of the fossil fuel industry, and someone who understood the strange physics of beaming energy through a borehole. Araque likes to call millimeter wave drilling "the first drilling innovation in 100 years." It is the kind of claim that invites eye-rolling - until you watch the rock disappear.
Ex-Schlumberger drilling expert. Spent 15 years in oil and gas before pointing his career at clean heat.
The MIT plasma researcher who first aimed a gyrotron at rock and watched it vaporize.
Co-founded Quaise to turn a fusion-lab discovery into field hardware.
Helped translate the lab discovery into a fundable, buildable company.
Quaise forms out of the MIT Plasma Science and Fusion Center to commercialize Woskov's millimeter wave drilling research.
The Engine and Vinod Khosla back the early bet on a drill that uses light, not steel.
Safar Partners, Prelude Ventures, Collaborative Fund, Nabors and others fund the push toward field demos.
Prelude Ventures and Safar Partners lead, with Mitsubishi Corporation and Standard Investments joining for terawatt-scale ambitions.
Quaise drills a 118-meter borehole in the field with millimeter waves, hitting rates up to 5 meters per hour through hard rock.
The company aims to bring a pilot geothermal power plant online in the Western U.S.
The system is almost rude in its simplicity. A gyrotron at the surface generates millimeter waves. Those waves travel down the borehole and deliver enough energy to the rock face that the rock melts and vaporizes. No bit touches the bottom of the hole. Nothing wears out down there because there is nothing down there to wear out. The deeper and hotter it gets - exactly where conventional drilling fails worst - the more comfortable this approach becomes.
The destination is what Quaise calls superhot rock: temperatures climbing toward 500°C at depths that could reach 20 kilometers. At those conditions, water pushed down the hole comes back as a supercritical fluid carrying enormous energy density. That is the difference between "warm water for a spa town" and "baseload power for a city."
Then comes the part that makes hardened utility executives lean forward: the heat can run through power plants that already exist. Retire a coal or gas plant, keep its turbines, its grid connection, its workforce - and feed it geothermal steam instead. The cleanest punchline in energy might be reusing the dirtiest infrastructure we already built.
The deeper and hotter the rock, the worse a normal drill performs. Quaise built the one tool that gets happier the closer it gets to hell.
// why the physics flips in their favorSkeptics rightly ask whether a new energy source is worth the trouble. One number does a lot of arguing for Quaise: deep geothermal can deliver the same energy using a tiny fraction of the land and materials other renewables need. Density is the whole point.
The proof is still accumulating - this is hardware, in the ground, in the real world, where things break and granite does not care about your roadmap. But the milestones are stacking up. The company has put millimeter wave drilling to work in the field, partnered with names like Oak Ridge National Laboratory and drilling firm Nabors, and pulled in strategic investors from Mitsubishi to Standard Investments. ARPA-E, the U.S. government's hard-tech energy program, has chipped in too.
Anyone can draw a clean-energy future on a whiteboard. The hard part is the smell of toasted rock - evidence that the beam actually reached the bottom of a real hole.
// the difference between a pitch and a demoQuaise's stated mission is unglamorous in its phrasing and enormous in its scope: bring deep geothermal to future generations as an inexhaustible, renewable, clean energy source. Araque puts the company's reach more bluntly - the ambition is to make supercritical geothermal available widely enough to replace fossil generation, well for well, with the power density that made fossil fuels so useful in the first place.
There is a quieter justice woven into the plan. The skills that built the oil and gas industry - drilling, rigs, subsurface engineering, the whole muscular knowledge base of Houston - are exactly the skills deep geothermal needs. Quaise isn't asking that workforce to disappear. It's asking it to drill deeper. For a company born partly from an oilman's second act, that symmetry is not an accident.
The future of clean energy may not be staffed by strangers. It may be staffed by the same people who drilled for oil, pointed at hotter rock.
// the workforce, transitioned not discardedNone of this is settled. The deepest holes are still ahead, the pilot plant is a date on a slide, and the gap between "we drilled 118 meters" and "we power a city" is measured in years and capital and rock that fights back. Skepticism here is not cynicism. It's literacy.
But return, for a moment, to that field. A beam of energy meets a slab of granite, and the granite gives way. A few years ago that was a laboratory party trick. Now it's happening at depth, in the open air, with investors watching and a power plant penciled in for 2028. The thing that makes Quaise worth paying attention to isn't a promise. It's that faint, specific smell - toasted rock - drifting up from a hole that, if the company is right, leads to the biggest battery any of us will ever stand on.
The Earth has been hot this whole time. Quaise is the company betting that the only thing we lacked was a way down.