Quaise

Quaise, IncIndustry| Geothermal Power

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Founded| 2018
Founder| Carlos Araque, Matt Houde, Aaron Mandell
Headquarters|

Cambridge, Massachusetts

United States

Key people

| Carlos Araque
Chief Executive Officer
Products| Millimeter-wave drilling

Number of employees

| 20+
Website| quaise.energy

Quaise, Inc is developing a millimeter-wave drilling system for converting existing power stations to use superdeep geothermal energy.[1] The system would repurpose existing gyrotron technology to drill 20 kilometers beneath the surface, where temperatures exceed 400 °C. No fracking would be required, avoiding the potential for earthquakes that have occurred in other geothermal systems.[2][3] Drilling using this technique is hoped to be fast, with boreholes aimed to be completed in 100 days[4] using existing 1MW gyrotrons. To reduce costs and delays, the company planned to establish its wells on the sites of existing power plants.[5]

By 2026, the company hopes to have achieved 100MW of geothermal power output.[6] By 2028, Quaise aims to have converted an existing fossil-fueled power plant to run on geothermal steam.

## Contents

* 1 History
* 2 Technology
* 3 Comparison with other power sources
* 4 See also
* 5 References

## History

Quaise was founded in 2018. In October 2021, Quaise began initial testing of gyrotron boring at Oak Ridge National Laboratory[7] and planned to have a full-scale drilling rig completed by 2024.[8] It closed a $21 million in Series A1 financing in 2024. In 2025, it announced the completion of a test well that reached a depth of 100 metres (330 ft).[5]

## Technology

Existing geothermal power stations can only be deployed in rare locations where adequate heat is located within 3 km of the surface.[9] These resources are of a comparatively low temperature, and require seismically risky stimulation techniques. Further, drilling at these depths is expensive and slow. Instead, Quaise plans to drill quickly using a gyrotron and waveguide, vaporizing the rock by heating it.[10] Temperatures at 20 km depth are above the supercritical point of water, which allows ten times more energy to be transferred given the same volumetric flow.[11] The supercritical water is then used in a supercritical steam generator which may previously have been powered with fossil fuels.

## Comparison with other power sources

The approach proposes advantages compared with other power sources:

* Small land footprint – Consumes less than 1% of the land area of wind or solar for the same maximum output.[12]

## See also

* Plasma deep drilling technology
* Geothermal energy in the United States
* GA Drilling
* Eavor Technologies
* Fervo Energy
* AltaRock Energy

## References

1. ↑ "Quaise Launches with $6 Million to Unlock Earth's Most Abundant Clean Energy Source". https://www.businesswire.com/news/home/20200608005111/en/Quaise-Launches-6-Million-Unlock-Earth's-Abundant.
2. ↑ "The Interchange Recharged podcast: Quaise Energy digs deep – into the world of geothermal | Wood Mackenzie". 4 February 2022. https://www.woodmac.com/news/opinion/the-interchange-recharged-podcast-quaise-energy-digs-deep--into-the-world-of-geothermal/.
3. ↑ "Quaise's ultra-deep geothermal drilling plans: Your questions answered". 7 March 2022. https://newatlas.com/energy/quaise-deep-geothermal-drilling-questions.
4. ↑ "Fusion tech is set to unlock near-limitless ultra-deep geothermal energy". 25 February 2022. https://newatlas.com/energy/quaise-deep-geothermal-millimeter-wave-drill/?itm_source=newatlas&itm_medium=article-body.
5. ↑ 5.0 5.1 Casey, Tina (2025-07-22). "MIT Spinoff Unleashes Geothermal Gyrotron On Fossil Fuels" (in en-US). https://cleantechnica.com/2025/07/22/mit-spinoff-unleashes-geothermal-gyrotron-upon-fossil-fuels/.
6. ↑ "Energy from the earth, for the earth | MIT Technology Review". https://www.technologyreview.com/2021/12/17/1040735/energy-from-the-earth-for-the-earth/.
7. ↑ "Geothermal - Quaise Begins Testing of Potentially Disruptive Geothermal Drilling Technology - Renewable Energy Magazine, at the heart of clean energy journalism". 6 October 2021. https://www.renewableenergymagazine.com/geothermal/quaise-begins-testing-of-potentially-disruptive-geothermal-20211006.
8. ↑ "Quaise Energy". https://www.quaise.energy.
9. ↑ Fridleifsson, Ingvar (2008). "The possible role and contribution of geothermal energy to the mitigation of climate change". IPCC Scoping Meeting on Renewable Energy Sources, Proceedings: Vol. 20, No. 25, pp. 59–80.
10. ↑ "Geothermal can provide half our energy – Quaise Energy CEO". 5 May 2023. https://www.energymonitor.ai/tech/geothermal-can-provide-half-the-worlds-energy-quaise-energy-ceo.
11. ↑ Shnell, Jim; Elders, Wilfred (2019). "Exploration And Development Of Supercritical Geothermal Resources On The Ocean Floor". PROCEEDINGS, 44th Workshop on Geothermal Reservoir Engineering: 3. https://pangea.stanford.edu/ERE/pdf/IGAstandard/SGW/2019/Shnell.pdf.
12. ↑ "Fusion tech is set to unlock near-limitless ultra-deep geothermal energy". 25 February 2022. https://newatlas.com/energy/quaise-deep-geothermal-millimeter-wave-drill/.

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