Quaise Energy
Millimetre-wave drilling for superhot geothermal
Ranked #4 in Best Geothermal Energy Companies.
Quaise Energy is developing millimetre-wave drilling to reach superhot rock. It plans a 50 MW plant near Newberry Volcano in Oregon, called Project Obsidian, which is targeted to come online by 2030.
At a glance
| Price from | Custom |
| Best for | Utilities planning very high-output geothermal plants |
From Quaise Energy's own website.
What stands out
- Drilling method aimed at deeper, hotter rock
- Backed by drilling contractor Nabors
Worth knowing
- No power plant operating yet
- Drilling technology still being proven in the field
How it ranks
Quaise Energy is ranked 4th of 10 in Best Geothermal Energy Companies (Lister Score 93.6).
#4 in Best Geothermal Energy Companies · Lister Score 93.6
Quaise closed a $180 million Series B in August 2026, including $35 million from Nabors Industries..
| Rank | Best Geothermal Energy Companies | Score |
|---|---|---|
| 1 | Fervo Energy | 97.5 |
| 2 | Ormat Technologies | 96.2 |
| 3 | Eavor Technologies | 94.9 |
| 4 | Quaise Energy | 93.6 |
| 5 | Sage Geosystems | 92.3 |
| 6 | Mazama Energy | 91.0 |
| 7 | XGS Energy | 89.6 |
| 8 | Zanskar | 88.2 |
| 9 | Geothermal Engineering Ltd (GEL) | 86.8 |
| 10 | Rodatherm Energy | 85.4 |
Frequently asked questions
How does Quaise Energy rank on Lister?
Quaise Energy is ranked 4th of 10 in Best Geothermal Energy Companies (Lister Score 93.6).
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