Sage Geosystems
Pressure geothermal power and energy storage
Ranked #5 in Best Geothermal Energy Companies.
Sage Geosystems, based in Houston, develops pressure geothermal systems that provide both baseload power and energy storage. Its 3 MW EarthStore facility in Christine, Texas, is operating, and in August 2024 it agreed to supply Meta with up to 150 MW of geothermal power.
At a glance
| Price from | Custom |
| Best for | Data centres and utilities wanting firm power with storage |
From Sage Geosystems's own website.
What stands out
- Combines power generation and storage
- Agreement with Meta for up to 150 MW
Worth knowing
- First power generation plant still in development
- Small operating site so far
How it ranks
Sage Geosystems is ranked 5th of 10 in Best Geothermal Energy Companies (Lister Score 92.3).
#5 in Best Geothermal Energy Companies · Lister Score 92.3
Sage raised more than $97 million in a Series B round announced in January 2026..
| 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 Sage Geosystems rank on Lister?
Sage Geosystems is ranked 5th of 10 in Best Geothermal Energy Companies (Lister Score 92.3).
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