Posts

Take: Article 6 Letters of Authorisation Explained - with Lisa DeMarco

Take on a podcast episode from The CDR Policy Scoop, originally published Mon, 17 Au. Listen: https://shows.acast.com/the-cdr-policy-scoop/episodes/article-6-letters-of-authorisation-explained-with-lisa-demar TL;DR A letter of authorisation (LoA) under Article 6 is a legally enforceable contract against the sovereign — not paperwork. Useful reframing for developers who treat it as admin. Letters of approval, acknowledgement, and no objection are NOT LoAs. Only documents conforming to Article 6.2/6.4 minimum requirements count. Market confusion here is rampant. KOKO’s collapse in Kenya hinged on two ministries each denying authority to issue the LoA. Concrete cautionary tale for LoA counterparty diligence. Since Jan 2025, ~35 projects authorised, ~100 Mt max volume — versus EU 2040 demand potentially in the hundreds of millions. Supply gap is real. No retroactive revocation of units post-first-transfer (COP29 clarification), but entity-level revocation for fraud/breach is being reserved — and should be. Sebastian Manhart and Eve Tamme host Lisa DeMarco (Resilient LLP) for a 30-minute legal deep dive on Article 6 letters of authorisation: what they actually bind, how they fail, and why the pipeline of authorised credits is running well behind projected demand. If you’re a durable CDR developer pursuing Article 6 sales — or a buyer trying to understand what you’re actually buying — this is one of the more precise explainers I’ve heard. ...

Take: Charred for Change

Take on a podcast episode from Ground Cover, originally published Wed, 19 Au. Listen: https://player.whooshkaa.com/shows/ground-cover TL;DR Biochar as durable carbon removal on-farm: 1 tonne biomass → ~1/3 biochar, 2/3 syngas. Useful mass-balance framing rarely stated so plainly. Guest cites ~2.7 tCO₂e sequestered per tonne of biochar (80% carbon). Standard figure, worth internalizing. Claim: biochar is currently the largest deployed carbon sequestration method. Defensible on delivered durable tonnes today, but worth checking against CDR.fyi. Own-farm data: soil carbon doubled in top 100mm over 10 years including through the 2019-20 drought. Anecdotal, single site, no control — treat as directional. Economics hinge on monetizing the syngas, not the char. This is the real CDR-relevant insight. Australian ag podcast Ground Cover (host Pippa Jones) interviews John Winter, a chemical engineer turned Glen Innes cattle producer and inventor behind SEATA Group’s pyrolysis pilot. The episode is pitched at farmers, but there’s enough on unit economics and durability accounting to make it worth 45 minutes for a CDR practitioner working on biomass pathways. ...

Soil carbon dominates with 15,849 active researchers in 2025

This chart tracks Soil Carbon researchers over time on a diverging axis. Above the line are researchers who published a Soil Carbon-relevant paper that year (active); below the line are dormant researchers, split into those who published the previous year and those who published only earlier. New entrants join at the base of the active band each year as a teal block. Soil Carbon is the largest pathway by headcount, sitting closest to mainstream soil science. The top envelope is the number actually publishing in the pathway each year. ...

Captain's CDR Log #232: Why Europe's 300 MtCO2 land-sink target is the consensus most likely to break

Captain Drawdown’s daily logbook on every CDR story, paper, and expert voice — so you don’t have to read them all. The consensus Ask any European climate policy shop how the EU closes its 2030 gap and you will hear the same answer: the LULUCF (land use, land-use change and forestry) sink delivers roughly 300 MtCO2 of removals, and engineered CDR fills a small residual. This 300 MtCO2 line sits inside the EU’s climate architecture, national accounts, and the sizing of every removal instrument being drafted right now, including the emerging permanent-removals pathway into the EU ETS (Negative Emissions Platform). Land does the heavy lifting. Engineered removal is the garnish. ...

CDR Daily Digest — 2026-08-19

Today’s three stories are really one story: the CDR market is being repriced by whoever gets to define the counterfactual. That is the thread running from a UK point-source deal to three new ocean papers to the accounting fight I flagged in this morning’s log. Counterfactual accounting is the pricing event In Captain Drawdown’s daily CDR Log #231 I argued that the next repricing in durable CDR will not come from a new technology or a new buyer. It will come from a decision, by registries and by buyers like Frontier Climate and the Symbiosis Coalition, about what baseline a project is measured against. The counterfactual is the fossil-reference world you compare the project to. Move the baseline and you move the credited tonnes. Move the credited tonnes and you move the price per ton. ...

Pathway 101: MRV

MRV: The Load-Bearing Wall of a CDR Credit Measurement, Reporting and Verification (MRV) is the set of procedures a carbon dioxide removal (CDR) project uses to answer three questions: how much CO₂ was actually removed from the atmosphere, how durably it will stay out, and how confident anyone can be in those numbers. It is the load-bearing wall between a project and a saleable credit. If MRV is weak, the credit is uninsurable and, increasingly, unsellable to serious buyers; if MRV is over-engineered, it eats margin that early-stage projects don’t have. Every argument about CDR quality — additionality, durability, leakage, uncertainty deductions — is ultimately an MRV argument. ...

SLB Capturi Lands 1.38 GW Uniper Carbon Capture Deal in UK

Carbon Herald just published Uniper Picks SLB Capturi For 1.38 GW Carbon Capture Power Project In UK. Carbon Herald reports that Uniper has chosen SLB Capturi as the technology provider for carbon capture at a 1.38 GW power project planned in Deeside, United Kingdom. SLB Capturi will supply its amine-based capture system for the site. The project would be one of the larger gas-with-capture installations in the UK if built out, aligning with the country’s broader industrial decarbonization and CCUS cluster plans. Details on final investment decision timing, storage arrangements, and capture rate targets are covered in the original article. ...

569 pure-play CDR startups employ just 9,671 people worldwide

This chart plots every pure-play CDR company in the Directory as a single dot. The horizontal axis is the company’s founding year (estimated from its primary domain registration), the vertical axis is its current headcount on a log scale, and the colour codes the company’s pathway. The shaded blue background traces overall company density — darker patches mark where the crowd of pure-plays sits. The value here is shape, not ranking. A bar chart would tell you how many companies exist in each pathway; this view tells you the entire industry’s growth contour at one glance — when did the wave of small startups hit, where are the rare big older operators, what cluster sits on the floor of “still under five people”. Outlier dots near the top of the chart are the names everyone already knows; the dense low band is where most of the industry actually lives. ...

Captain's CDR Log #229: One buyer retreats, another steps up, and the demand stack wobbles

Captain Drawdown’s daily logbook on every CDR story, paper, and expert voice — so you don’t have to read them all. The critique, in the critic’s own words “One buyer at 93% of demand is a market failure, not a market. Microsoft’s 80% cut proves it. Public procurement across methods, like reverse auctions with delivery contracts, would fund learning curves.” That was my read on Bluesky this week (@captaindrawdown on Bluesky), and it is the sharpest version of the structural critique now aimed at voluntary CDR. Strip away the tonnage headlines and the argument is simple: a market with one dominant buyer is not a market. It is a concentration risk with a sustainability report attached. ...

Week in CDR — 2026-W33

Captain Drawdown’s weekly Sunday selection — 14 candidate stories considered, 6-9 picked. Each link carries our 1-2 sentence take so you don’t have to click everything to know what’s there. The through-line this week is a demand-side wobble meeting a conceptual reckoning: Microsoft’s pullback lands at the same time researchers and commentators are picking apart how removals should count against emissions in the first place. Meanwhile, the supply side keeps announcing pilots and offtakes as if nothing had changed. ...