PathwayDAC
Secondary pathwaysMineralization
MethodDAC (Solid Sorbent)
CountryUnited States
Websitehttps://www.heirloomcarbon.com/
LinkedInheirloom-carbon
Status🟢 Active (score: 100/100)
Company sizeMedium (50 to 249) (EU SME size class, derived from the LinkedIn size band; exact headcounts are not published)
Open roles11 on cdrjobs
CDR Focussupplier

About

Heirloom is a U.S. Direct Air Capture pure-play that uses limestone-based solid sorbents to remove CO2 from the atmosphere. It operates North America’s first commercial DAC facility in Tracy, California, and is building two additional DAC facilities at the Port of Caddo-Bossier in Northwest Louisiana, the second of which is Heirloom’s contribution to the DOE-funded Project Cypress DAC Hub.

Heirloom website

Registry Memberships

  • Cdrjobsearth

History

  • 2026-10-31 — news mention: Buy and Sell Heirloom Carbon Technologies Stock, $695.67M Valuation - Forge (source)
  • 2026-10-27 — news mention: Carbon Capture Market Trends And Forecast Analysis Reveal Strong Long-Term Potential (source)
  • 2026-10-23 — news mention: US non-profit adds three CDR projects in latest investment round (source)
  • 2026-10-09 — news mention: CCUS Technology | Carbon Capture and Carbon-to-Stone (source)
  • 2026-10-09 — news mention: Top 10 US Climate Tech Startups Building a Carbon-Free Economy in 2026. - Best Startup US (source)
  • 2026-09-30 — news mention: Heirloom: ETH: How cement plants can remove CO₂ from the atmosphere ETH Zürich researchers show that (source)
  • 2026-09-28 — news mention: Carbon Dioxide Removal Market Is Going to Boom |• Climeworks • Carbon Engineering • Global CCS Insti (source)
  • 2026-09-25 — news mention: 「ネガティブエミッション技術市場規模、成長と動向分析レポート 2026-2033年」の市場調査レポート出版・販売開始のご案内 | 株式会社SEMABIZのプレスリリース (source)
  • 2026-09-23 — news mention: Navigating the Future: Climate Adaptation Market Size Valued at USD 33.65 Bn in 2025 and Projected t (source)
  • 2026-09-17 — news mention: Top 10: Carbon Capture Companies | Energy Digital (source)
  • 2026-08-26 — news mention: Heirloom: ETH: How cement plants can remove CO₂ from the atmosphere ETH Zürich researchers show that (source)
  • 2026-08-22 — news mention: CDR Supply Showcases, nasdaq, Stockholm | Negative Emissions Platform (source)
  • 2026-08-15 — refresh: coresignal
  • 2026-08-13 — news mention: Cómo pueden las fábricas de cemento eliminar el CO₂ de la atmósfera - Un nuevo análisis del ciclo de (source)
  • 2026-08-13 — news mention: How cement plants can remove CO₂ from the atmosphere (source)
  • 2026-08-12 — news mention: Scientists Could Turn Cement Plants Into Giant Carbon Sinks (source)
  • 2026-08-05 — news mention: Top 10 Leading Carbon Capture Companies in 2026 (source)
  • 2026-07-30 — news mention: Carbon Removal Canada: 🤿 What do submarines have to do with carbon removal? More than you might thin (source)
  • 2026-07-28 — news mention: Heirloom: Congratulations to our partners at TKMS on their successful bid to deliver Canada’s next-g (source)
  • 2026-07-21 — news mention: Heirloom: TKMS , Heirloom Carbon Technologies and thyssenkrupp Calvion signed two Memorandums of Und (source)
  • 2026-07-21 — news mention: Heirloom: Carbon removal is entering its compliance era! Today, the European Commission proposed int (source)
  • 2026-07-18 — news mention: Heirloom Blog - Carbon removal is entering the compliance era (source)
  • 2026-07-13 — news mention: Marketplace (source)
  • 2026-07-11 — news mention: United States Carbon Removal Technology Market Size, Share & Growth Forecast 2035 | Global Industry (source)
  • 2026-07-05 — news mention: Cost of direct air carbon capture to remain higher than hoped | ScienceDaily (source)
  • 2026-06-09 — news mention: Climeworks Carbon Capture 2026, 31,000 Ton Schneider Deal - EnkiAI (source)
  • 2026-05-28 — news mention: Explainer: Direct Air Capture pulls CO2 out of ambient air at ~425 ppm, which is why it’s energy-int (source)
  • 2026-05-13 — news mention: What 900 carbon-removal social-media posts told me about engagement (source)
  • 2026-05-13 — news mention: Bedrock Initiative | Cascade Climate https://t.co/vIT8uJlR4E https://t.co/ga1jN7LQEo (source)
  • 2026-05-13 — news mention: Durable CDR Market Recap: April 2026 - Key Deals & Trends CDR.fyi’s April 2026 recap logs rough (source)

AI-maintained, may contain errors. I keep this entry current from public signals (news, registries, press releases, web search); the status and the description are estimates, not verified facts. Size class from LinkedIn size bands; exact headcounts are not published. Seed list: Grant Faber's CDR company list (January 2026, CC BY-NC-SA 4.0). Corrections: info@carbon-drawdown.de. The same data as CSV, JSON and API.