Form Energy, based in Somerville, Massachusetts, makes iron-air batteries that store energy for up to 100 hours. Its first commercial project, a 1.5 MW system with Great River Energy in Cambridge, Minnesota, is targeting commercial operation by the end of 2026.
At a glance
| Price from | Custom |
| Best for | Utilities planning multi-day backup for wind and solar |
From Form Energy's own website.
What stands out
- Stores energy for days, not hours
- Uses low-cost iron
Worth knowing
- First projects running behind schedule
- Early commercial stage
How it ranks
Form Energy is ranked 10th of 10 in Best Energy Storage Companies (Lister Score 85.3).
#10 in Best Energy Storage Companies · Lister Score 85.3
Form Energy raised $405 million in October 2024 and announced a collaboration with GE Vernova..
| Rank | Best Energy Storage Companies | Score |
|---|---|---|
| 1 | Tesla Energy (Megapack) | 97.3 |
| 2 | BYD Energy Storage | 96.0 |
| 3 | CATL | 94.8 |
| 4 | Sungrow | 93.5 |
| 5 | Fluence | 92.2 |
| 6 | Hithium | 90.9 |
| 7 | LG Energy Solution Vertech | 89.5 |
| 8 | Valo (Wärtsilä and RCT Solutions) | 88.1 |
| 9 | Canadian Solar e-STORAGE | 86.7 |
| 10 | Form Energy | 85.3 |
Frequently asked questions
How does Form Energy rank on Lister?
Form Energy is ranked 10th of 10 in Best Energy Storage Companies (Lister Score 85.3).
Appears in
Add this badge to your site
If you work at Form Energy, paste this code into your website to show where it ranks on Lister. The badge links to the ranking and updates within a day when the rank changes.