Naturally occurring minerals - alongside forests, soils, and the ocean - are one of our planet's most vital carbon sinks. Over geological timescales, carbon dioxide in the air and water chemically bind to these minerals and permanently turn to stone. Our technology enhances this natural process, called carbon mineralization, to help minerals absorb CO2 from the ambient air in days, rather than years. By combining the best of engineering and nature, we can offer the most cost-effective and scalable Direct Air Capture solution in the world.
Location: United States, California, San Francisco
Employees: 11-50
Total raised: $53M
Founded date: 2020
Investors 13
| Date | Name | Website |
| 10.04.2021 | Yes VC | yes.vc |
| - | Lowercarbo... | lowercarbo... |
| 10.07.2022 | Incite Ven... | incite.org |
| 18.05.2022 | Plug and P... | plugandpla... |
| 25.03.2022 | Breyer Cap... | breyercapi... |
| - | Carbon Rem... | carbonremo... |
| - | Breakthrou... | breakthrou... |
| - | Quantum In... | qif.vc |
| - | GS Futures | gsfutures.... |
| 18.03.2022 | Ahren Inno... | ahreninnov... |
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Funding Rounds 1
| Date | Series | Amount | Investors |
| 17.03.2022 | Series A | $53M | - |
Mentions in press and media 8
| Date | Title | Description |
| 10.11.2023 | The first US commercial plant has started to pull carbon from the air. It's able to suck out 1,000 tons annually and plans to expand. | Science The first US commercial plant has started to pull carbon from the air. It's able to suck out 1,000 tons annually and plans to expand. Maiya Focht 2023-11-09T21:42:26Z Share icon An curved arrow pointing right. Share Facebook Icon Th... |
| 14.04.2023 | Spotify, Klarna donate €4.5M to support Milkywire’s charitable fund to fight climate change | Stockholm-based Milkywire, an environmental impact platform, announced on Friday that its ‘beyond-offsetting’ charitable fund, Climate Transformation Fund, has been boosted by several of Nordic’s leading tech companies. Founded in 2018, Mil... |
| 14.04.2023 | Klarna and Spotify among Nordic tech companies contributing to environmental impact platform Milkywire | Stockholm-based environmental impact platform, Milkywire, says that nine Nordic tech companies, including Spotify, Klarna, Avanza, Northzone, Mentimeter and BioGaia have committed to donate to its Climate Transformation Fund. Milkywire's Cl... |
| 25.10.2022 | Heirloom Startup Helps Minerals Absorb CO2 In Days Instead Of Years | Limestone acts like a sponge in Heirloom's carbon removal technology.getty |
| 05.07.2022 | AENU rolls out €100 million to back startups that solve climate crisis and advance social equality | Berlin-based impact VC AENU (ex-Pirate Impact) has announced the first close of its €100 million evergreen fund for impact startups. The fund has an initial volume of €100 million and aims to manage over €500 million in fund capital by 2026... |
| 22.04.2022 | 15 carbon removal projects score $1M each in climate Xprize milestone | A multi-year, $100 million Xprize competition for startups trying to remove or reverse carbon emissions has its first crop of big winners. Though the bulk of this Musk money won’t be given away until 2025, these 15 companies are each gettin... |
| 17.03.2022 | Heirloom Raises $53M In Series A Funding | Heirloom, a San Francisco, CA-based direct air capture company permanently removing CO2from the atmosphere, raised $53M in Series A funding. The round was co-led by Carbon Direct Capital Management, Ahren Innovation Capital, and Breakthroug... |
| - | AENU rolls out €100 million to back startups that solve climate crisis and advance social equality | Berlin-based impact VC AENU (ex-Pirate Impact) has announced the first close of its €100 million evergreen fund for impact startups. The fund has an initial volume of €100 million and aims to manage over €500 million in fund capital by 2026... |