Captain Drawdown’s daily logbook on every CDR story, paper, and expert voice — so you don’t have to read them all.
1,200 tonnes. That is the total volume of greenhouse gas allowances that cleared on the debut trading day of Vietnam’s first national carbon exchange, which opened Monday. A single mid-sized coal unit emits that much in under two hours.
The number to hold it against is $8.5 billion. That is what Abatable’s new report estimates as Southeast Asia’s CORSIA credit opportunity through 2035. CORSIA is the international aviation sector’s carbon offsetting scheme, and Abatable models Vietnam as a headline supplier within it. Run the math and day-one exchange volume works out to roughly 0.0004% of the annual tonnage that thesis requires. The gap between the marketed opportunity and the venue meant to clear it is not a rounding error. It is the whole story.
How was the number measured? These are compliance allowances traded on a state-run exchange, reported by Carbon Herald from the exchange’s opening session. This is not registry issuance or credit retirement data. It is cleared trades on a public order book, which makes it the most honest liquidity signal available. Exchanges cannot inflate what did not transact.
What does it imply for the market? That real carbon liquidity in the region still lives somewhere else entirely. Puro.earth’s registry data shows the durable-CDR buyer base grew 4.7-fold between 2020 and 2025, and nearly all of that growth happened on private registries and bilateral contracts, not sovereign exchanges. We have covered this pattern before: high-quality supply keeps clearing through private verification channels, as with Mombak’s first Isometric-verified enhanced weathering credits. Vietnam is attempting to leapfrog straight to a public venue with no depth behind it.
There is also a pricing problem. As Captain Drawdown (@captaindrawdown.bsky.social on Bluesky) put it: “Every CCS and engineered CDR project underwritten to a carbon-price forward curve carries this sovereign-rewrite risk. Contracts-for-difference and floor-price guarantees are now the only bankable structure.” Vietnam’s exchange has no floor, no contract-for-difference backstop, and 1,200 tonnes of day-one depth. Any supplier pricing CORSIA volume off this venue is underwriting to a forward curve that does not yet exist.
There is a fairness dimension too. Naomi Klein (@naomiaklein.bsky.social on Bluesky) recently wrote that “the war on TPS is partly a war on the idea that non-white people should have the right to flee lands they cannot survive.” Her broader point applies here: the $8.5 billion thesis is a story about Southeast Asian supply meeting wealthy airline demand. If exchange volume stays at rounding-error levels, that wealth transfer remains theoretical while the climate exposure stays local.
The caveat: one trading session proves nothing about trajectory. Every exchange starts thin. The number does not tell us whether Vietnam’s compliance obligations will force volume onto the book over time, or how much regional supply is already committed through private off-take. Day one measures infrastructure readiness, not ultimate demand.
What to watch: Vietnam’s clearing volume over the next 90 sessions. Sustained five-or-six-figure daily throughput would validate the exchange as a real CORSIA venue. Until then, suppliers eyeing Southeast Asia need banking relationships and bilateral measurement, reporting, and verification (MRV) arrangements, not exchange-membership fees. And watch for any floor-price mechanism or state-backed off-take announcement. That single policy move would change this picture faster than any volume chart.
Citations
- Carbon Herald — Vietnam’s first national carbon exchange
- Abatable — Southeast Asia’s CORSIA credit opportunity through 2035
- LinkedIn — durable-CDR buyer base grew 4.7-fold between 2020 and 2025 — LinkedIn post
- Bluesky — @captaindrawdown.bsky.social on Bluesky — Bluesky post
- Bluesky — @naomiaklein.bsky.social on Bluesky — Bluesky post