Quaise unveils Project Obsidian, a planned superhot geothermal plant in central Oregon

Quaise Energy/Millimetre-wave drilling

Quaise announced Project Obsidian, a planned superhot geothermal plant in central Oregon that would tap rock at 300–500 degrees Celsius using its millimetre-wave drilling. It plans 50 MW in phase one, 250 MW in phase two and over 1 GW eventually; hotter rock yields far more power per well.

• Project Obsidian uses millimeter-wave drilling to access superhot rock (300–500°C) and avoid the fuel and waste of traditional geothermal, yielding 10–100x more power per well.
• Three-phase build: phase one 50 MW, phase two 250 MW, phase three 1+ GW, demonstrating the scalability of superhot geothermal.
• Central Oregon location leverages accessible superhot resources; the approach targets zero waste, zero fuel, and zero emissions with only water as the working fluid.