Heirloom uses limestone to pull CO2 from the air and stores it permanently. It runs a commercial plant in Tracy, California, is developing two direct air capture facilities in Shreveport, Louisiana, and raised a $150 million Series B in December 2024.
At a glance
| Price from | Custom |
| Best for | Buyers of direct air capture removal in the US |
From Heirloom's own website.
What stands out
- Uses cheap, abundant limestone
- Commercial plant already running
Worth knowing
- Louisiana plants not yet operating
- Small capture volumes so far
How it ranks
Heirloom is ranked 9th of 10 in Best Carbon Capture Companies (Lister Score 86.5).
#9 in Best Carbon Capture Companies · Lister Score 86.5
Heirloom raised a $150 million Series B in December 2024..
| Rank | Best Carbon Capture Companies | Score |
|---|---|---|
| 1 | ExxonMobil Low Carbon Solutions | 97.0 |
| 2 | 1PointFive (Occidental) | 95.8 |
| 3 | Northern Lights | 94.6 |
| 4 | SLB Capturi | 93.3 |
| 5 | Climeworks | 92.0 |
| 6 | Svante | 90.7 |
| 7 | Carbfix | 89.3 |
| 8 | Charm Industrial | 87.9 |
| 9 | Heirloom | 86.5 |
| 10 | Deep Sky | 85.1 |
Frequently asked questions
How does Heirloom rank on Lister?
Heirloom is ranked 9th of 10 in Best Carbon Capture Companies (Lister Score 86.5).
Appears in
- #9 in Best Climate Tech Startups · Startups
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