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730

Archive: https://archive.today/CTwKT

From the post:

>Quaise Energy has announced that it has successfully drilled to a depth of 100 meters, a milestone for the company’s proprietary millimeter wave drilling technology that is being developed to unlock deeper and hotter geothermal resources. The test drilling was done at a field site in Central Texas. Prior to 2025, millimeter wave drilling had only been demonstrated in the laboratory, with MIT’s early system drilling a hole just a few centimeters deep. While 100 meters is only a fraction of the commercial depth needed for the company’s first power plants, the granite drilled during the field test is the same type of hard rock that blankets the basement layer of the Earth’s crust. The company plans to build on this achievement with an upcoming gyrotron using 10x more power, with a target to complete a pilot power plant in the Western U.S. as early as 2028.

Archive: https://archive.today/CTwKT From the post: >>Quaise Energy has announced that it has successfully drilled to a depth of 100 meters, a milestone for the company’s proprietary millimeter wave drilling technology that is being developed to unlock deeper and hotter geothermal resources. The test drilling was done at a field site in Central Texas. Prior to 2025, millimeter wave drilling had only been demonstrated in the laboratory, with MIT’s early system drilling a hole just a few centimeters deep. While 100 meters is only a fraction of the commercial depth needed for the company’s first power plants, the granite drilled during the field test is the same type of hard rock that blankets the basement layer of the Earth’s crust. The company plans to build on this achievement with an upcoming gyrotron using 10x more power, with a target to complete a pilot power plant in the Western U.S. as early as 2028.
[–] • 1 pt

Apparently it's 4 inches in diameter. The emitter assembly moves down the hole as it's drilled (and cleans debris out). It leaves a glassy surface around the hole.