Trend watch: Direct air capture (DAC) economics & deployment in 2026 — signals, winners, and red flags

Direct air capture entered 2026 at a critical inflection point. The technology that was dismissed as science fiction a decade ago now has over $4.5 billion in committed public funding in the United States alone, two Department of Energy Regional DAC Hubs advancing through construction, and a growing pipeline of voluntary corporate offtake agreements. Yet the industry's central challenge remains stubbornly unresolved: the cost of capturing one metric ton of CO2 from ambient air ranges from $400-1,000 at operating facilities, roughly 5-10 times what is needed for DAC to function as a meaningful climate mitigation tool at gigatonne scale. The signals emerging in early 2026 suggest both genuine progress toward cost reduction and structural risks that could delay commercial viability by years.

Why It Matters

The Intergovernmental Panel on Climate Change's Sixth Assessment Report identifies carbon dioxide removal (CDR) as essential in every pathway that limits warming to 1.5 or 2 degrees Celsius. Nature-based CDR approaches like reforestation and soil carbon sequestration face permanence and additionality concerns, with reversal risks from wildfire, land-use change, and climate impacts. DAC offers durable, verifiable, permanent removal with captured CO2 either stored in deep geological formations or mineralized in basalt, providing storage timescales of 10,000+ years.

The US Department of Energy's Carbon Negative Shot initiative targets a cost of $100 per metric ton of net CO2 removed. Achieving this threshold would make DAC competitive with the social cost of carbon used in federal regulatory analysis ($51 per metric ton in 2020 dollars, rising annually) and would unlock demand from compliance carbon markets, where prices in the EU Emissions Trading System have traded between 50 and 100 euros per metric ton through 2025.

Current deployment remains minuscule relative to need. Total operational DAC capacity worldwide is approximately 15,000 metric tons of CO2 per year, with Climeworks' Mammoth plant in Iceland representing the largest single facility at 36,000 metric tons annual capacity upon full commissioning. For context, global CO2 emissions exceed 37 billion metric tons annually. Scaling DAC to capture even 1% of annual emissions would require a roughly 25,000-fold increase in capacity, necessitating an industrial buildout comparable in scale to the global petrochemical industry.

The Signals That Matter

DOE Regional DAC Hubs: Construction Progress and Early Lessons

The two Regional DAC Hubs selected under the Bipartisan Infrastructure Law represent the most significant near-term deployment milestones. Project Cypress, led by Battelle in partnership with Climeworks and Heirloom, is sited in Calcasieu Parish, Louisiana, targeting 1 million metric tons of annual CO2 capture at full scale. South Texas DAC Hub, led by 1PointFive (a subsidiary of Occidental Petroleum), is located in Kleberg County, Texas, with similar scale ambitions.

Both projects are progressing through front-end engineering and design (FEED) in early 2026, with construction activities beginning on supporting infrastructure including wells for geological storage, water treatment, and electrical interconnection. The DOE's $3.5 billion commitment across these hubs represents the largest public investment in engineered carbon removal in history.

Early indicators from the FEED process reveal important cost signals. Preliminary capital cost estimates for the South Texas hub suggest $1,200-1,500 per annual metric ton of capture capacity, higher than initial projections of $800-1,000. The increase reflects rising construction material costs, the complexity of integrating DAC with geological storage infrastructure, and the custom engineering required for first-of-a-kind facilities at this scale. If confirmed, these capital costs imply levelized capture costs of $300-500 per metric ton, assuming 20-year facility lifetimes and 85% utilization rates.

The Energy Question

DAC is fundamentally an energy conversion problem. Capturing CO2 from air at a concentration of approximately 420 parts per million (0.042%) requires overcoming enormous thermodynamic penalties compared to capturing CO2 from concentrated industrial flue gases (4-15% concentration). Current DAC processes require 5-9 gigajoules of thermal energy and 200-400 kilowatt-hours of electricity per metric ton of CO2 captured.

The choice of energy source determines both the net carbon removal efficiency and the cost trajectory. Climeworks' solid sorbent process uses low-grade heat (80-120 degrees Celsius), which can be sourced from geothermal energy (as in Iceland), waste heat from industrial processes, or dedicated heat pumps powered by renewable electricity. Carbon Engineering's (now 1PointFive's) liquid solvent process requires high-temperature heat (900 degrees Celsius) for calcination, typically supplied by natural gas with CCS applied to the process emissions.

A critical signal in 2026 is the emergence of dedicated clean energy procurement for DAC facilities. Project Cypress has secured agreements for geothermal and solar power in Louisiana, while the South Texas hub is evaluating a combination of solar PV, battery storage, and grid power. The International Energy Agency estimates that a single 1-million-ton-per-year DAC facility would require 2-4 terawatt-hours of energy annually, equivalent to the output of a 500 MW to 1 GW solar farm. This energy demand raises legitimate concerns about whether DAC deployment could compete with direct electrification and other decarbonization priorities for scarce clean energy resources.

Voluntary Market Demand and Price Discovery

The voluntary carbon removal market has provided the primary revenue signal for DAC developers. Frontier, the advance market commitment organized by Stripe, Alphabet, Meta, McKinsey, and Shopify, has committed over $1 billion to purchase permanent carbon removal between 2022 and 2030. Microsoft's carbon removal portfolio includes multi-year agreements with Climeworks, Heirloom, and CarbonCapture Inc. at prices of $400-600 per metric ton.

These purchases function as both revenue and price discovery mechanisms. The downward trajectory is notable: Climeworks' earliest offtakes were priced at $1,000+ per metric ton in 2022, while 2025 vintage contracts have transacted at $400-600. This 40-50% price decline over three years reflects both scale-driven cost reductions and competitive pressure from alternative CDR approaches including enhanced rock weathering (priced at $150-300 per metric ton) and biomass carbon removal and storage (BiCRS, at $100-250 per metric ton).

The question for 2026 is whether voluntary demand can sustain prices sufficient to fund the next generation of facilities. Total voluntary CDR purchases in 2025 were approximately $500 million globally, with DAC representing roughly 40% of spend. Industry projections from Carbon Business Council suggest this market could grow to $2-4 billion annually by 2030, but this depends heavily on continued corporate climate commitment in a political environment that has become less favorable to ESG-oriented spending.

Emerging Technology Variants

Beyond the two dominant approaches (Climeworks' solid sorbent and 1PointFive's liquid solvent), several technology variants are advancing toward pilot and demonstration scale in 2026.

Heirloom Carbon Technologies uses calcium oxide looping, where limestone (CaCO3) is calcined to produce lime (CaO), which passively absorbs CO2 from air over 2-3 days before being re-calcined to release concentrated CO2 for storage. The approach promises lower capital costs than engineered contactor systems because it relies on passive air contact rather than energy-intensive fans. Heirloom's pilot facility in Tracy, California, achieved verified capture in 2023 and is scaling toward a 17,000 metric ton per year facility.

CarbonCapture Inc. deploys modular, containerized solid sorbent systems designed for mass manufacturing rather than custom construction. Their Project Bison in Wyoming targets 5 million metric tons of annual capacity by 2030, using a "scale by replication" strategy that could reduce learning curve costs faster than scaling individual large facilities. Early cost estimates suggest potential for $200-300 per metric ton at scale.

Verdox has developed an electrochemical DAC process using quinone-based electrodes that swing between CO2-absorbing and CO2-releasing states with applied voltage. The approach eliminates thermal energy requirements entirely, potentially reducing total energy consumption by 50-70% compared to thermal processes. Verdox remains at bench-to-pilot transition, with a 1,000 metric ton per year demonstration planned for 2027.

Winners to Watch

1PointFive (Occidental Petroleum subsidiary) holds the strongest position for near-term large-scale deployment, combining Occidental's geological storage expertise, DOE hub funding, and corporate balance sheet capacity. Their integration of DAC with enhanced oil recovery has drawn criticism from environmental groups but provides a revenue stream that pure carbon storage lacks.

Climeworks maintains technology leadership in solid sorbent DAC, with the Mammoth plant providing operational data at a scale no competitor has yet matched. Their partnership with Carbfix for basalt mineralization storage in Iceland offers the highest-permanence storage pathway currently operating.

Heirloom Carbon Technologies represents the most promising cost reduction pathway through passive air contact, with backing from Breakthrough Energy Ventures and significant DOE funding. If calcium oxide looping achieves projected costs of $150-250 per metric ton, it could fundamentally alter DAC economics.

CarbonCapture Inc. offers the modular, manufacturing-led approach that has driven cost reductions in solar PV and battery storage. Their partnership with Frontier Scientific for geological storage in Wyoming provides the storage infrastructure critical for scale.

Red Flags

Political risk to public funding. The $3.5 billion DOE DAC Hub commitment was authorized under the Bipartisan Infrastructure Law, but disbursement timelines extend through 2030 and beyond. Shifts in federal administration priorities, congressional appropriations, or regulatory interpretation could delay or reduce funding for projects that have not yet reached financial close. The 45Q tax credit, which provides $180 per metric ton for DAC with geological storage, faces similar political exposure.

Energy competition and grid constraints. DAC facilities at million-ton scale require enormous clean energy inputs. In regions with constrained grid capacity and long interconnection queues, DAC projects may face 3-5 year delays securing sufficient power supply. The risk that DAC competes with direct electrification for scarce clean electricity is a legitimate concern that the industry has not adequately addressed.

Voluntary market fragility. Corporate carbon removal commitments have been made during a period of strong ESG momentum. The voluntary market could contract significantly if corporate buyers face shareholder pressure to reduce costs, if regulatory requirements for carbon removal do not materialize, or if alternative CDR approaches offer comparable permanence at lower prices. DAC's premium pricing makes it particularly vulnerable to market downturns.

Storage infrastructure bottleneck. Capturing CO2 is only half the challenge; permanent geological storage requires Class VI injection wells, which currently take 2-4 years to permit in the United States. The EPA has issued fewer than 50 Class VI permits nationally. Scaling DAC to megatonne levels requires a parallel buildout of storage infrastructure that is proceeding even more slowly than DAC capacity itself.

Cost curve uncertainty. The DAC industry frequently cites solar PV's 99% cost decline as a precedent for future DAC cost reductions. This analogy is misleading. Solar PV costs declined primarily through manufacturing scale (silicon wafer and cell production), while DAC costs are dominated by energy consumption (40-60%) and civil construction (20-30%), neither of which is amenable to the same manufacturing learning rates. Independent analyses by the National Academies of Sciences suggest that DAC costs are unlikely to fall below $150-200 per metric ton before 2040, even with aggressive R&D and deployment.

Action Checklist

• Track DOE DAC Hub milestone reports for updated cost and performance data as FEED studies conclude in 2026
• Monitor 45Q tax credit implementation guidance from the IRS for changes affecting DAC project economics
• Evaluate DAC offtake agreements alongside alternative CDR approaches (enhanced weathering, BiCRS) for portfolio diversification
• Assess energy sourcing strategies for DAC projects, with preference for facilities using dedicated clean energy rather than grid electricity
• Review Class VI well permitting timelines in target deployment regions before committing to DAC investments
• Stress-test financial models assuming voluntary market price declines of 30-50% by 2030
• Engage with Frontier, NextGen CDR, and other advance market commitments to understand procurement criteria and pricing trajectories
• Monitor emerging technology variants (electrochemical, passive air contact) for potential cost disruption

FAQ

Q: What is the current cost of capturing CO2 through direct air capture? A: Operating facilities report costs of $400-1,000 per metric ton of CO2 captured and stored, depending on the technology, energy source, and facility scale. Climeworks' Mammoth plant in Iceland is estimated at $600-800 per metric ton. Next-generation facilities targeting 2028-2030 operation project costs of $200-400 per metric ton, but these estimates remain unverified at commercial scale.

Q: How does DAC compare to planting trees for carbon removal? A: DAC offers higher permanence (10,000+ years for geological storage versus 50-100 years for forest carbon), higher verifiability (tonnage can be precisely measured versus estimated), and smaller land footprint per ton removed. However, DAC is currently 10-50 times more expensive per metric ton than afforestation, and forests provide co-benefits (biodiversity, watershed protection, cooling) that DAC does not. The approaches are complementary rather than substitutable.

Q: Will DAC ever be cheap enough to matter for climate change? A: The DOE's target of $100 per metric ton by 2030-2035 is considered ambitious by most analysts. More conservative projections suggest $150-250 per metric ton by 2040. At $150 per metric ton, removing 1 billion metric tons annually would cost $150 billion, roughly 0.15% of global GDP. Whether this is "affordable" is a political and economic question as much as a technical one. Most climate models assume DAC reaches 5-10 billion metric tons per year by 2100, implying cumulative investment of $5-20 trillion over the century.

Q: Is DAC a distraction from emissions reduction? A: This concern is legitimate but represents a false dichotomy. Climate models consistently show that both emissions reduction and carbon removal are necessary to limit warming. DAC should not substitute for reducing fossil fuel emissions, but it provides a pathway for addressing residual emissions from hard-to-abate sectors (aviation, cement, agriculture) and for eventually drawing down historical atmospheric CO2 concentrations. The risk is that DAC availability reduces the urgency for near-term emissions cuts, a moral hazard that policy design must address.

Q: What role do government subsidies play in DAC economics? A: Subsidies are currently essential. The US 45Q tax credit provides $180 per metric ton for DAC with geological storage, covering 30-45% of current capture costs. DOE Hub funding covers a significant share of capital costs for selected projects. Without these subsidies, no DAC project is commercially viable at current technology maturity. The industry's medium-term viability depends on whether costs decline fast enough to sustain operations as subsidies are eventually reduced or expire.

Sources

• International Energy Agency. (2025). Direct Air Capture: A Key Technology for Net Zero. Paris: IEA Publications.
• National Academies of Sciences, Engineering, and Medicine. (2024). Negative Emissions Technologies and Reliable Sequestration: An Updated Assessment. Washington, DC: The National Academies Press.
• US Department of Energy. (2025). Regional DAC Hubs: Program Update and Milestone Report. Washington, DC: DOE Office of Fossil Energy and Carbon Management.
• Climeworks AG. (2025). Mammoth Plant: Operational Performance and Lessons Learned. Zurich: Climeworks AG.
• Carbon Business Council. (2025). State of the Carbon Removal Market: 2025 Annual Report. San Francisco: Carbon Business Council.
• Frontier. (2025). Advance Market Commitment for Carbon Removal: Portfolio Update and Price Trends. San Francisco: Stripe.
• Fasihi, M., Efimova, O., and Breyer, C. (2024). "Techno-economic assessment of CO2 direct air capture plants." Journal of Cleaner Production, 224, 957-980.