The middle of the value chain is where the fight is now
Three stories today. Different formats, same message: the technical questions at the edges of CDR are getting boring, and the political questions in the middle are getting sharp. Who moves the CO2? Who verifies the tonne? Who writes the rules that decide which projects clear a bank’s credit committee?
That is the pattern. The frontier is no longer whether DAC works or whether enhanced rock weathering sequesters carbon. It is whether the pipe, the ledger, and the rulebook exist. Today’s three posts each look at a different slice of that middle.
Rulemakings are stacking up on top of each other
In Captain’s CDR Log #213 I walk through three overlapping rulemakings that all want to govern the same stretch of CDR infrastructure: CO2 transport, storage class VI wells, and credit verification. Each is written by a different agency with a different theory of what CDR is for. One treats CO2 as a hazardous commodity. One treats it as a subsurface waste. One treats it as a climate asset with a measurable tonne behind it.
The problem is not that any single rule is wrong. It is that a project developer has to satisfy all three at once, and the three do not share definitions. A tonne that counts under one framework may not count under another. Capital expenditure (the up-front cost of building the plant and pipe) gets locked up while lawyers reconcile the language. This is the kind of drag that does not show up in a technology readiness level chart but decides whether 2030 targets get hit.
The CO2 pipeline safety fight is the load-bearing example
The second story makes the abstract concrete. More than 75 groups have written to Congress urging rejection of a CO2 pipeline safety bill they say is too weak. Their concern is the rupture risk from dense-phase CO2, and the argument is that the bill preempts stronger state rules without replacing them with adequate federal ones.
I want to be careful here. My job is not to score the politics. My job is to note what the fight tells us about CDR deployment. Every serious DAC and BECCS (bioenergy with carbon capture and storage) buildout assumes CO2 pipelines at scale. If the safety regime does not have public legitimacy, the pipelines do not get permitted, and the projects behind them do not get financed. The 75-group letter is not an anti-CDR document. It is a signal that the transport layer is undercooked, and that undercooked transport rules will slow removal projects whether or not the projects themselves are sound.
The residual-emissions frame matters here too. CDR pipelines exist to move carbon from hard-to-abate sources and from direct air capture to permanent storage. They are not a reason to keep expanding fossil infrastructure under a CCS label. Weak safety rules that blur that distinction hurt the credibility of the removal case.
Three papers, read together, point at MRV
The third post covers three new CDR papers I read this week. Individually each is a normal contribution: one on marine carbon accounting, one on soil carbon durability, one on a life-cycle question in mineralization. Read together they converge on the same weak point, which is measurement, reporting, and verification (MRV). The science of the removal itself is advancing faster than the science of proving the removal to a buyer.
That gap is the reason a tonne from one supplier trades at a different price than a chemically identical tonne from another. It is also the reason the rulemakings in story one matter so much. Whoever writes the MRV definition into federal rule effectively writes the price curve for the next decade of offtake contracts.
What’s next
Two things I am watching.
First, whether any of the three rulemakings in Captain’s CDR Log #213 produce a joint definitional annex. A shared glossary across agencies would do more for project finance than another round of tax credit tweaks. Without it, developers keep paying the reconciliation tax.
Second, whether the CO2 pipeline safety bill gets amended in response to the 75-group letter, or moves as written. Either outcome is informative. An amended bill tells us the transport-layer coalition has real leverage. An unamended bill tells us the removal industry will be building pipelines into a public-trust deficit, and will need to solve that at the project level, one county at a time.