Antora Energy
Thermal batteries for industrial heat and power
Ranked #5 in Best Climate Tech Startups.
Antora Energy, founded in 2018 and based in San Jose, California, builds thermal batteries that store clean electricity as heat for factories and industrial sites. It raised a $550 million Series C in July 2026.
At a glance
| Price from | Custom |
| Best for | Manufacturers replacing fossil-fuelled heat |
From Antora Energy's own website.
What stands out
- Large commissioned project
- Own manufacturing in California
Worth knowing
- Few large sites so far
- Prices not published
How it ranks
Antora Energy is ranked 5th of 10 in Best Climate Tech Startups (Lister Score 91.8).
#5 in Best Climate Tech Startups · Lister Score 91.8
Antora says it commissioned a 5 GWh thermal battery system in South Dakota in under 12 months..
| Rank | Best Climate Tech Startups | Score |
|---|---|---|
| 1 | Redwood Materials | 96.9 |
| 2 | Octopus Energy | 95.6 |
| 3 | Fervo Energy | 94.4 |
| 4 | Form Energy | 93.1 |
| 5 | Antora Energy | 91.8 |
| 6 | Watershed | 90.5 |
| 7 | Group14 Technologies | 89.2 |
| 8 | Twelve | 87.9 |
| 9 | Heirloom | 86.6 |
| 10 | Rondo Energy | 85.3 |
Frequently asked questions
How does Antora Energy rank on Lister?
Antora Energy is ranked 5th of 10 in Best Climate Tech Startups (Lister Score 91.8).
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