Captain Drawdown’s daily logbook on every CDR story, paper, and expert voice — so you don’t have to read them all.

The CDR market is building the plumbing faster than ever. But the one customer who was paying for most of what flows through it just stopped writing checks.

Microsoft has paused all carbon removal purchases, according to reporting from Carbon Herald and Heatmap News. This is not a minor procurement hiccup. Microsoft has been responsible for roughly 90% of global durable CDR demand. When a market has one buyer and that buyer freezes, you don’t have a slowdown. You have a structural crisis.

What makes this moment genuinely strange is what’s happening on the other side of the ledger. In the same week Microsoft went quiet, the U.S. EPA granted a Class VI permit for geological CO₂ storage in Kansas. Days later, Indiana’s first carbon capture and storage project was approved, with 44.01 beginning development. Across the Atlantic, the UK launched a pilot program to advance CO₂ transport beyond pipelines, exploring rail and shipping as alternatives for moving captured carbon to storage sites.

Governments are accelerating. The private market is seizing up. These two facts are not unrelated. They describe a CDR sector splitting into two tracks that are moving in opposite directions.

The Demand Concentration Problem, Made Real

The World Economic Forum recently flagged structural barriers holding back carbon removal markets. Chief among them: extreme demand concentration. A market where one buyer dominates is not a market. It is a patronage arrangement. And patronage arrangements collapse when the patron reconsiders.

CDR.fyi’s data makes the fragility painfully concrete. Their demand structure snapshot shows that of 36.4 million contracted tonnes of durable CDR, only 91,000 have actually been delivered. That is a delivery rate of roughly 0.25%. The gap between paper commitments and physical removal was already enormous before Microsoft’s pause. Now, with the dominant buyer stepping back, even the paper commitments look uncertain.

“Microsoft Strategic Review Triggers Temporary Pause in Engineered Carbon Removal Procurement,” noted @biochartoday.bsky.social. The biochar community, one of the most delivery-ready CDR pathways, is feeling this directly. As we covered in our analysis of Climeworks integrating biochar to diversify CDR portfolios, biochar has been positioning itself as a near-term, verifiable removal method. It does not help to be delivery-ready when there is no one placing orders.

Infrastructure Without a Customer

Here is the paradox. Class VI permits, the federal authorization required to inject CO₂ underground for permanent geological storage, are notoriously difficult and slow to obtain. For years, the bottleneck in CDR was storage. Where do you put the carbon once you capture it? Now that bottleneck is loosening. Kansas and Indiana represent real progress in building out the physical capacity to sequester CO₂ permanently. The UK transport pilot signals that logistics, the unsexy middle layer of getting CO₂ from capture sites to storage sites, is also getting serious public investment.

But storage infrastructure without capture demand is like building a highway to a town no one wants to visit. These permits and pilots are funded by government policy, driven by long-term climate targets and regulatory mandates. They operate on a different clock than the voluntary market. That is both their strength and the source of the current disconnect.

The voluntary market, where companies like Microsoft buy removal credits to offset their residual emissions, was supposed to be the bridge. Private buyers would fund early-stage capture technologies, drive down costs, and create a functioning market before compliance frameworks caught up. That theory depended on a growing and diversified buyer pool. Instead, we got one very large buyer and a handful of smaller ones. The bridge was built on a single pylon.

The Science Keeps Moving Too

Even the research layer reflects this tension between advancing capability and uncertain commercial pathways. Sara Vicca (@saravicca.bsky.social) recently noted that in enhanced rock weathering (ERW), a method of spreading crushed minerals on land to accelerate natural carbon uptake, “Cation tracing reveals substantial weathering but no inorganic C sequestration. While inorganic C storage may lag behind, secondary reactions & cation retention may support soil organic C stabilization.”

This is a nuanced finding. The rocks are weathering. The chemistry is happening. But verified, permanent carbon storage remains harder to pin down. It mirrors the broader market pattern exactly. Activity is real. Infrastructure is advancing. But the final link, whether that is verified tonnes of removal or verified dollars of demand, keeps lagging behind. We explored this measurement challenge in our enhanced weathering primer and in our coverage of Mombak generating the first Isometric-verified ERW credits in Brazil. The science is progressing. The question is whether anyone will be buying what it produces.

Who Fills the Gap?

Writing in Carbon Middle Management Inc, the argument is direct: the private sector built this market, and now it is time for governments to scale it. That framing feels right. Voluntary corporate procurement did something essential. It proved that durable CDR could be purchased, delivered, and verified. Companies like Microsoft, through the Frontier coalition and direct offtake agreements, created the first real price signals for engineered removal. We tracked some of these early partnerships, including Tapestry and Climeworks signing a 10-year deal and CUR8 and Isometric launching a 2030 portfolio offering.

But one company cannot be the entire demand side of a global industry. The companies that survive this pause will be those that can connect to compliance markets, government procurement programs, or revenue streams embedded in products. As we have argued before, CDR needs more than trees, and it also needs more than Microsoft.

A critical caveat: none of this changes the fundamental constraint. CDR exists to handle residual emissions that cannot be eliminated. It is not a substitute for cutting fossil fuel use. The risk of a demand freeze is that it slows removal capacity. The risk of over-reliance on a single corporate buyer is that it also distorts what removal is for.

What to Watch

The EU is studying integration of CDR into its Emissions Trading System, with estimates suggesting 60 million tonnes per year of removal demand could emerge by 2050. Whether that translates into actual compliance-grade purchasing for engineered removal, not just forestry credits, is the single most important variable in CDR’s near future. Because the permits keep coming. The storage wells are getting drilled. The transport pilots are launching. The only missing ingredient is someone willing to pay for capture at the other end. Right now, that someone is not showing up.