Carbon-removal credits
Sale of verified tonnes removed (DAC, BECCS, mineralisation) to corporate buyers, mostly through multi-year offtake contracts
5 leading companies in carbon-removal credits, one segment of carbon capture — Capturing CO₂ from smokestacks and the air, then storing or using it — 68 Mtpa operating worldwide, subsidy-led
new market segment · researched 2026-11-14
Point-source carbon captureCO₂ transport & storageDirect air captureCO₂ utilisationCarbon-removal credits
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Leading carbon-removal credits companies
5 companies, with the scale each source states. Scale is the whole company's unless the row says otherwise.
| Company | Where | What they do | Scale |
|---|---|---|---|
| Microsoft MSFT ↗ | Redmond, United States | Dominant buyer of carbon-removal credits (DAC, BECCS and others), and therefore the main source of revenue for removal suppliers | share of 2025 carbon removal purchases (per CDR.fyi, via ESG Dive): 87 percent (2025) ↗ |
| Climeworks ↗ | Zürich, Switzerland since 2009 | Runs direct air capture plants (Orca, Mammoth in Iceland) and sells removal credits to buyers such as British Airways and Morgan Stanley; partner in the Project Cypress DAC hub in Louisiana | Mammoth plant capacity: 36,000 tonnes CO₂ per year (up to) (2024) ↗ |
| Occidental Petroleum (1PointFive) OXY ↗ | Houston, United States | Through its subsidiary 1PointFive, builds STRATOS, a direct air capture plant in Ector County, Texas, and sells its carbon-removal credits to buyers including Microsoft and Amazon | design capture capacity (STRATOS): 500,000 tonnes CO₂ per year (2026) ↗ |
| Heirloom Carbon Technologies ↗ | United States since 2020 | Limestone-based direct air capture; Tracy, California plant opened Nov 2023; Microsoft offtake for up to 315,000 t | Tracy plant design capacity: 1,000 tonnes CO₂ per year (2023) ↗ |
| Deep Sky ↗ | Montreal, Canada | Carbon-removal project developer; its Deep Sky Alpha test centre in Alberta is described as North America's first facility capturing CO₂ directly from air, and it plans Deep Sky One DAC | — |
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The carbon capture market
The whole market this segment sits in.
operating CO₂ capture capacity · world68
↗Mt CO₂ per year (Mtpa) · 2026
Growth, segments, risks and every company in carbon capture →
Quick answers
- What are carbon-removal credits?
- Sale of verified tonnes removed (DAC, BECCS, mineralisation) to corporate buyers, mostly through multi-year offtake contracts. They are one segment of the carbon capture market.
- Who are the leading carbon-removal credits companies?
- Microsoft (United States), Climeworks (Switzerland), Occidental Petroleum (1PointFive) (United States), Heirloom Carbon Technologies (United States), Deep Sky (Canada).
- Which carbon-removal credits companies are publicly traded?
- Microsoft (MSFT), Occidental Petroleum (1PointFive) (OXY).
- Which Canadian companies are in carbon-removal credits?
- Deep Sky, Montreal.
- How big is the carbon capture market?
- For the whole carbon capture market, not this segment alone: operating CO₂ capture capacity (world) 68 Mt CO₂ per year (Mtpa), 2026 — Global CCS Institute.