Heirloom
Permanent carbon removal at the lowest cost
About Heirloom
Heirloom accelerates the natural process of rock weathering — using crushed limestone to pull CO₂ from the atmosphere. Their approach achieves durable carbon removal at a fraction of the cost of other methods, with the first commercial facility operational in California.
Heirloom website preview
Company facts
- Category
- AI
- Funding stage
- Series B
- Total raised
- $150M
- Founded
- 2020
- Team size
- 50-200
- HQ
- San Francisco
- Country
- USA
- Website
- heirloomcarbon.com
Founders of Heirloom
- Shashank Samala
- Noah McQueen
Investors backing Heirloom
- Microsoft
- Carbon Direct
- Breakthrough Energy Ventures
Frequently asked questions
What does Heirloom do?
Heirloom accelerates the natural process of rock weathering — using crushed limestone to pull CO₂ from the atmosphere. Their approach achieves durable carbon removal at a fraction of the cost of other methods, with the first commercial facility operational in California.
Where is Heirloom based?
Heirloom is based in San Francisco, USA.
When was Heirloom founded?
Heirloom was founded in 2020.
How much has Heirloom raised?
Heirloom has raised $150M in their Series B round.
Who founded Heirloom?
Heirloom was founded by Shashank Samala, Noah McQueen.
Who has invested in Heirloom?
Heirloom is backed by Microsoft, Carbon Direct, Breakthrough Energy Ventures.