Heirloom is a technology company.
Heirloom has raised $203.0M across 2 funding rounds.
Key people at Heirloom.
Heirloom has raised $203.0M in total across 2 funding rounds.
Heirloom is a climate technology company specializing in Direct Air Capture (DAC) that permanently removes CO2 from the atmosphere using accelerated carbon mineralization with limestone.[1][2][3] It builds scalable DAC facilities powered by 100% renewable energy, serving corporate buyers of carbon removal credits like Microsoft, Stripe, Meta, and H&M Group, to solve the challenge of atmospheric CO2 reduction amid climate change.[2][3][5] Heirloom operates America's first commercial DAC facility in Tracy, California, with two more under development in Louisiana capturing nearly 320,000 tons of CO2 annually, and aims to remove 1 billion tons by 2035 while targeting costs below $100 per ton.[2][3][5]
Founded in 2020, the company has grown rapidly from a five-person team to ~130 employees, securing over $100 million in funding from investors like Breakthrough Energy Ventures and Lowercarbon Capital, plus major deals including a multi-year, 315,000-ton commitment from Microsoft.[3][5]
Heirloom was founded in 2020 in the San Francisco Bay Area (initially Brisbane, California) by a team of engineers and scientists motivated to combat climate change through scalable carbon removal.[1][3][5][6] Starting as a small experiment in a petri dish by just five people in June 2021, the company quickly advanced its technology leveraging limestone's natural mineralization properties, accelerated from years to days.[2][3] Pivotal early moments included launching the nation's first commercial DAC facility in Tracy, California, in November 2023, winning a U.S. Department of Energy DAC hub award for Louisiana, and signing multimillion-dollar deals with major clients.[3][5] Previously known as Equiopps, Heirloom has emphasized rapid iteration, community governance, and environmental justice from the start.[1][2][3]
Heirloom stands out in the DAC landscape through these key advantages:
Heirloom rides the DAC megatrend in climate tech, addressing net-zero goals as natural solutions like forests fall short for gigaton-scale removal needed by 2050.[1][2][5] Timing aligns with U.S. leadership via DOE hubs, IRA incentives, and corporate net-zero pledges, positioning America ahead globally with only ~18 DAC facilities worldwide capturing 10,000 tons yearly.[2][3][5] Market forces like surging carbon credit demand from hyperscalers (e.g., Microsoft's massive deal) and policy support favor Heirloom's scalable model over costlier rivals, influencing the ecosystem by pioneering commercial viability, community models, and supply chains for hard-to-abate sectors.[3][5][7]
Heirloom is poised to dominate U.S. DAC scaling with Louisiana facilities online soon, expanding to gigaton capacity amid falling costs and rising credit prices. Trends like AI-driven energy demand and binding removal mandates will accelerate growth, evolving Heirloom from pioneer to essential supplier in the trillion-dollar carbon economy—delivering on its billion-ton vision if execution matches its blistering start.[2][3][5]
Heirloom has raised $203.0M in total across 2 funding rounds.
Heirloom's investors include Ahren Innovation Capital, Yes VC.
Key people at Heirloom.
Heirloom has raised $203.0M across 2 funding rounds. Most recently, it raised $150.0M Series B in December 2024.
| Date | Round | Lead Investors | Other Investors |
|---|---|---|---|
| Dec 1, 2024 | $150.0M Series B | Ahren Innovation Capital, Yes VC | |
| Mar 1, 2022 | $53.0M Series A | Ahren Innovation Capital, Yes VC |
