Carbon removal: the contract and the delivered tonne
Why financing commitments, plant output and verified removal need separate evidence.
Public-source desk research checked 16 October 2026. Company statements are attributed; commercial conclusions are Offaxis analysis. Illustrative scenarios are labeled. We have not independently tested products or audited company accounts.
There are several milestones before a climate claim
Our thesis is that a durable carbon-removal business needs to connect long-term purchasing commitments with measured, verified delivery. An offtake can support a future project, but it is not the same event as removing carbon. A commercial review should preserve that distinction from the first headline to the final customer record.
A historical contracting example
Climeworks announced a ten-year agreement to remove 10,000 tonnes for Microsoft; Microsoft’s later account identifies the agreement as signed in 2022. Climeworks separately announced delivery of verified removal services from Orca, describing DNV’s role in checking performance against a stated methodology. These historical examples illustrate different stages of the business. They do not establish the present output, cost or status of every Climeworks facility. [1][2][3]
What an offtake can do
Our interpretation is that a credible customer commitment can reduce demand uncertainty and support financing discussions. Its practical value depends on timing, payment obligations, delivery conditions and remedies. A nominal contract value is not enough to determine how much construction risk the buyer or supplier carries. Undisclosed terms should remain undisclosed in the analysis rather than being replaced with assumptions presented as facts.
| Commercial layer | What is supplied | Evidence to examine |
|---|---|---|
| Offtake agreement | Future purchasing commitment | Payment, delivery timing and remedies |
| Plant operation | Physical capture and storage activity | Measured net output and operating costs |
| Verified delivery | Accepted customer removal | Methodology, scope and delivery records |
Define the product being purchased
A buyer should know the removal pathway, storage arrangement, accounting boundary and delivery evidence. Gross carbon captured, net removal and verified customer delivery are different measures. Energy use and other lifecycle effects belong in the methodology. Verification is strongest when the relevant scope, period and documents are visible; a reference to an independent verifier does not justify extending the conclusion beyond the verified activity.
The operating business case
A plant needs a path from equipment and energy inputs to accepted delivery. Our analytical watchlist includes uptime, net output, maintenance, verification cost and the timing of customer payments. Scaling nameplate capacity can increase opportunity while increasing financing and execution exposure. A company can therefore have buyer interest and still face difficult unit economics.
What would change the thesis
Confidence should rise with repeated verified deliveries under clear contracts and transparent methodology. It should fall if announcements of future capacity consistently outrun delivered output or if buyers cannot trace the evidence behind their purchases. This report makes no estimate of undisclosed removal costs and does not treat a historical agreement as a new 2026 transaction. The commercial question is whether the chain from commitment to accepted delivery becomes repeatable.
Sources
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