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    Analysis

    Can carbon removal scale credibly? The 2026 debate

    Paris-compatible scenarios need carbon dioxide removal at gigatonne scale, but novel methods removed only about 2 million tonnes in 2025, and measurement, permanence and a one-buyer market raise doubts about how fast that gap can close.[1][2][3][4] Optimists point to 40% annual growth and falling costs; skeptics to tiny verified tonnages and fragile demand.[5][6][7]

    Editor reviewedStrict sourcingUpdated Climate science and carbon removalEnergy and climateTech policy
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    The question

    Carbon dioxide removal (CDR) is needed in every scenario that reaches net zero and halts warming, but the methods meant to provide durable removal are still tiny.[1][5] The debate in 2026 is whether they can grow fast enough, and honestly enough, to matter.

    All scenarios that reach net zero and halt warming deploy CDR at gigatonne scale, with emissions cuts providing at least 80% of the effort.[1] Total removal is about 2.2 billion tonnes of CO2 a year, 99.9% of it from forests and soils; novel methods removed about 2.0 million tonnes in 2025, up from 1.4 million in 2023.[5][2] In the assessed scenarios novel CDR grows fivefold between 2030 and 2035 and exceeds 3.5 billion tonnes a year by 2050.[8] Country pledges fall short of the highest-ambition scenarios by 0.3 billion tonnes a year in 2030, widening to 5.2 billion in 2050.[9]

    Evidence of growth

    Novel removal is growing about 40% a year.[5] Contracted novel CDR reached 30.2 million tonnes in 2025, almost four times 2024, led by BECCS.[10] Climeworks reported in September 2026 that upgrades had more than doubled capture in its upgraded Mammoth containers and cut operating costs per tonne by over half, with net removal up from 119 to 675 tonnes in the first half of the year.[6][11] Frontier added $915 million in commitments in June 2026.[12] Sweden approved just over SEK 20 billion in support for the Beccs Stockholm plant.[13]

    Evidence of credibility gaps

    Most novel credits contracted so far are ex ante, meaning the removal will happen in the future.[10] Verifiable enhanced weathering removals were about 0.0038 million tonnes in 2025 under a stricter counting method.[14] The State of CDR report lists open problems in sustainable biomass sourcing, permanence of storage, measurement of enhanced weathering and ocean alkalinity enhancement, and lifecycle emissions of direct air capture.[3] One whole-system estimate found net emissions for a bioethanol BECCS facility once co-products were counted.[15] ADM’s Decatur facility paused injections for almost a year after fluid migration in its reservoir.[16] Storage-duration rules vary: the most common threshold among standards is 100 years, while the EU defines permanent removal as storage for “several centuries”.[17] The largest planned direct air capture plant, STRATOS, was delayed again in May 2026.[18]

    Evidence on demand

    Microsoft accounted for 78.5% of disclosed durable removal tonnes purchased as of April 2026, and was reported that month to be pausing new purchases; it said it may “adjust the pace or volume” of procurement.[19][20] The State of CDR report says expectations of demand have become fragile, that compliance-market prices are low relative to costs, and that US policy dismantling and volatility are undermining credibility.[7][21] Operational MRV for CDR under the Paris Agreement’s Article 6.4 mechanism is still incomplete.[22]

    The pause was not a full stop: Microsoft signed a 650,000-tonne deal with biogas capture firm BioCirc in May 2026, weeks after the reports.[23] Frontier added $915 million of commitments in June 2026. It said it would focus on fewer companies and require a clear line of sight to long-term compliance or government demand for every deal.[12][24] Frontier also reports that its portfolio companies delivered about 23,000 tonnes in 2025, a small fraction of what its buyers have contracted.[25]

    Reading the evidence

    The growth numbers and the credibility numbers describe the same market from two ends. Contracts have grown quickly, but contracts are promises; delivered and verified tonnes remain orders of magnitude smaller. The methods with the largest contracted volumes (BECCS, biochar) are those with the most established measurement, while the methods with the largest theoretical potential (enhanced weathering, ocean alkalinity) are the hardest to verify. That suggests near-term growth will lean on biomass-based methods, which face hard limits on sustainable feedstock.[26][27]

    The demand view and the integrity view are not opposites. Buyers paying high prices want confidence that tonnes are real, and weak measurement makes it harder to bring in regulated, compliance-based demand.[7][22]

    Over the next year, the clearest signals will be whether STRATOS starts operating, whether Climeworks’ upgrades spread across Mammoth, and whether Microsoft resumes large purchases.[28] If none of these happen, 2026 contracted volume is likely to fall well below 2025’s. The IPCC’s 2027 methodology report on CDR could shape how countries count removals, but its effect on markets is uncertain.[29]

    Competing views

    Scaling is under way

    Novel removal is growing about 40% a year, contracts jumped almost fourfold in 2025, and plant operators report big performance and cost gains, so the early learning curve looks like other clean technologies.[5][10][6][12]

    Prove the tonnes first

    Verified removals are tiny, most credits are for future removals, and enhanced weathering, ocean methods and BECCS still face unresolved measurement and lifecycle questions, so integrity must come before volume.[14][10][3][15]

    Demand is the bottleneck

    With one buyer holding most of the market, US policy in flux and compliance prices below costs, the industry's problem is who pays, not whether the technology works.[19][20][21][7]

    Questions readers ask

    How far is carbon removal from what is needed?

    Country pledges reach about 2.5 billion tonnes a year in 2030 against 2.9 billion in the most ambitious scenarios, and the gap widens to 5.2 billion tonnes by 2050. Novel methods supply only about 2 million tonnes today.[9][5]

    Are carbon removal credits real removals?

    Many are not yet. Most novel credits contracted so far are ex ante, meaning the removal is scheduled for the future.[10]

    How long must removed carbon stay stored?

    Standards differ. The most common threshold is 100 years, the EU's CRCF regulation requires "several centuries" for permanent removal, and the UK ETS uses 200 years.[17]

    What happened when Microsoft paused purchases?

    Microsoft, which held 78.5% of disclosed durable removal purchases, was reported in April 2026 to be pausing new buying; it said it may adjust the pace or volume of procurement.[20][19]

    Sources

    Each numbered claim is a statement we checked against the sources listed with it. Status shows how well established it is.

    1. [1]

      All scenarios that reach net zero and halt warming deploy CDR at gigatonne scale, while in cost-effective Paris-compatible scenarios emissions cuts provide at least 80% of the effort to reach net zero CO2. confirmedas of 2026-06-01

    2. [2]

      Removal from novel methods grew from 1.4 million tonnes of CO2 in 2023 to 2.0 million tonnes in 2025. confirmedas of 2026-06-01

    3. [3]

      The State of CDR report lists open problems for novel CDR quality, including sustainable biomass sourcing for BECCS and biochar, permanence of storage, measurement of enhanced weathering and ocean alkalinity enhancement, and lifecycle emissions of energy-intensive DACCS. confirmedas of 2026-06-01

    4. [4]

      The State of CDR report found novel removal concentrated in two methods (biochar and BECCS) and one dominant buyer (Microsoft), and cited US climate policy dismantling and Microsoft's adjustments to its procurement pace as evidence of the resulting vulnerability. confirmedas of 2026-06-01

    5. [5]

      Total carbon removal is about 2.2 billion tonnes of CO2 a year, around 5% of gross CO2 emissions; conventional methods provide 99.9% and novel methods about 2 million tonnes, growing about 40% a year. confirmedas of 2026-06-01

    6. [6]

      On 10 September 2026 Climeworks said sorbent and plant upgrades had more than doubled CO2 capture in upgraded collector containers at Mammoth and cut operating costs per tonne by more than 50%. confirmedas of 2026-09-10

    7. [7]

      The State of CDR report says expectations of large and growing demand for CDR have become fragile, and prices in nascent compliance markets are low compared with current costs for many methods. confirmedas of 2026-06-01· interpretation

    8. [8]

      In the assessed scenarios novel CDR scales up fivefold between 2030 and 2035 and exceeds 3.5 billion tonnes a year by 2050. confirmedas of 2026-06-01

    9. [9]

      Country pledges add up to about 2.5 billion tonnes of CO2 removal a year in 2030 against 2.9 billion in the highest-ambition Paris-compatible scenarios, a gap that grows to 1.2 billion tonnes in 2035 and 5.2 billion in 2050. confirmedas of 2026-06-01

    10. [10]

      Contracted volumes of novel CDR reached 30.2 million tonnes in 2025, almost four times 2024, led by BECCS at 20.8 million tonnes; most novel credits are still ex ante, meaning the removal will happen in the future. confirmedas of 2026-06-01

    11. [11]

      Mammoth produced 675 tonnes of net CO2 removal in the first half of 2026, compared with 119 tonnes in the first half of 2025. confirmedas of 2026-09-10

    12. [12]

      In June 2026 Frontier announced $915 million in new commitments, bringing its total to $1.8 billion of permanent carbon removal by 2040, and Anthropic joined as a buyer. confirmedas of 2026-06-17

    13. [13]

      Sweden approved just over SEK 20 billion in support for Stockholm Exergi's BECCS plant, paid over up to 15 years from the start of geological storage, which is planned for 2028. confirmedas of 2026-06-01

    14. [14]

      Verifiable enhanced weathering removals totalled about 0.0038 million tonnes of CO2 in 2025 under a stricter counting method, even as companies spread tens of thousands of tonnes of basalt in India and Brazil. confirmedas of 2026-06-01

    15. [15]

      A whole-system lifecycle estimate cited by the State of CDR report found net emissions, not removal, for one bioethanol BECCS facility once co-products were included. confirmedas of 2026-06-01

    16. [16]

      ADM's bioethanol CCS facility in Decatur, Illinois paused CO2 injections in October 2024 after fluid migration was detected in the storage reservoir, and resumed in September 2025; the State of CDR report attributes the 2025 dip in BECCS removals mainly to this pause. confirmedas of 2026-06-01

    17. [17]

      Storage-duration rules differ widely; the most common threshold among standards is 100 years, the EU's CRCF regulation defines permanent removal as storage for "several centuries", and the UK ETS requires 200 years for removal credits. confirmedas of 2026-06-01

    18. [18]

      In May 2026 Occidental said STRATOS, first planned to operate by the end of 2024, had hit an unexpected delay from component issues after its core process units performed as expected in testing. E&E News noted the plant is designed for 500,000 tonnes a year, against 36,000 tonnes for the largest DAC plant then operating. confirmedas of 2026-05-07

    19. [19]

      Microsoft accounted for 78.5% of all disclosed durable carbon removal tonnes purchased as of April 2026, according to CDR.fyi. confirmedas of 2026-06-12

    20. [20]

      In April 2026 Heatmap News and Bloomberg reported that Microsoft was pausing future carbon removal purchases; Microsoft said it may "adjust the pace or volume" of its procurement. confirmedas of 2026-04-16

    21. [21]

      The State of CDR report says US policy dismantling and volatility are undermining policy credibility, after the 2021 Infrastructure Law provided more than $8.5 billion for CDR demonstration and infrastructure. confirmedas of 2026-06-01· interpretation

    22. [22]

      Under Article 6 of the Paris Agreement, Norway and Switzerland made the first durable-CDR transfer in 2025, but operational MRV for CDR under the Article 6.4 crediting mechanism remains incomplete. confirmedas of 2026-06-01

    23. [23]

      In May 2026, weeks after the reported pause, Microsoft agreed to buy 650,000 tonnes of carbon removal credits from BioCirc, which captures CO2 at Danish biogas plants and stores it offshore; Microsoft's chief sustainability officer said its carbon removal programme had not ended. confirmedas of 2026-05-20

    24. [24]

      Frontier said its new funds would concentrate purchases on a narrower set of companies it judges to have gigaton-scale potential, and that every deal would need a clear line of sight to long-term demand such as compliance markets or government procurement. confirmedas of 2026-06-17

    25. [25]

      Frontier says seven of its portfolio companies delivered about 23,000 tonnes of removal in 2025, roughly double the year before, and that its portfolio companies forecast more than 50,000 tonnes in 2026 (self-reported). confirmedas of 2026-06-17

    26. [26]

      In 2025 biomass-based removal (BiCRS) made up 96% of durable CDR purchase volume and 91% of deliveries, with BECCS leading purchases and biochar leading deliveries. confirmedas of 2026-06-12

    27. [27]

      Literature estimates of BECCS technical potential span 0.5–11 billion tonnes of CO2 a year by mid-century, but a planetary-boundary analysis put sustainable potential from dedicated plantations at only 0.1–0.9 billion tonnes. confirmedas of 2026-06-01

    28. [28]

      Climeworks says it will extend the new sorbent and mechanical upgrades to all 12 collector containers in one Mammoth plant module by the end of 2026 and begin testing its next-generation technology at Mammoth in early 2027. reportedas of 2026-09-10· forecast

    29. [29]

      In October 2025 IPCC member governments agreed the scientific content of a 2027 Methodology Report on Carbon Dioxide Removal Technologies and Carbon Capture, Utilization and Storage. confirmedas of 2026-03-27

    Revision history (2)
    1. Page created.
    2. Refresh: added Microsoft's post-pause deals and slower buying pace, Frontier's narrowed strategy and delivery figures, and a pointer to Climeworks' roll-out plan.

    Created Oct 10, 2026. Last reviewed by an editor on Oct 10, 2026. Next scheduled review: Jan 10, 2027.

    Cite this page

    "Can carbon removal scale credibly? The 2026 debate." ContentLora, updated Oct 10, 2026. https://contentlora.com/analysis/carbon-removal-credibility-debate

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