How much has Heirloom Carbon raised?
Heirloom Carbon has About $203M disclosed/reported funding, with the latest disclosed financing described as $150M Series B in December 2024 co-led by Future Positive and Lowercarbon Capital. Not disclosed
- Total raised
- About $203M disclosed/reported funding
- Disclosed rounds
- 2 disclosed major rounds
- Latest round
- $150M Series B in December 2024 co-led by Future Positive and Lowercarbon Capital
- Latest valuation
- Not disclosed
- First raised
- $53M, 2022
- Notable backer
- Lowercarbon Capital
Heirloom Carbon's funding rounds
Heirloom Carbon's disclosed funding has moved from technical validation toward commercial DAC scale-up, facilities, engineering, and carbon removal deliveries.
- 2022Series A - valuation not disclosed$53M led by climate investors.
- Dec 2024Series B - valuation not disclosed$150M led by Future Positive and Lowercarbon Capital.
How much has Heirloom Carbon raised in total?
About $203M disclosed/reported funding is the best disclosed total used in this profile. It includes $53M Series A, $150M Series B.
Because private-company databases can disagree, this profile prioritizes company announcements, investor posts, and named press releases over opaque estimates.
Who are Heirloom Carbon's investors?
Named backers include Future Positive, Lowercarbon Capital, Japan Airlines, Mitsubishi, Mitsui, MOL Switch, Quantum Innovation Fund, Siemens Financial Services, Ahren, Breakthrough Energy Ventures, Carbon Direct Capital, and MCJ Collective. These investors are relevant because they bring climate, industrial, software, infrastructure, or strategic-market experience to the company.
Why did the valuation move or remain undisclosed?
Valuation has not been publicly confirmed, so movement should be inferred only from round size, strategic investors, commercial traction, and technical milestones. Hardware and climate-infrastructure companies often disclose capital and offtake before they disclose price-per-share valuation.
Is Heirloom Carbon profitable, and will it IPO?
Heirloom Carbon has not disclosed profitability or IPO timing. The nearer-term milestone is commercialization, deployments, and repeatable unit economics rather than a public listing.
What does Heirloom Carbon's funding mean if you sell into them?
The funding supports commercial DAC scale-up, facilities, engineering, and carbon removal deliveries. Sellers should map outreach to carbon procurement, sustainability, project finance, facilities, government programs, storage partners, and industrial project teams, with proof points around reliability, compliance, implementation speed, and measurable climate or operating impact.
As of June 2026.Sources:Heirloom Series BCarbon Herald Heirloom Series ATracxn Heirloom profile
Heirloom Carbon — frequently asked questions
