Vienna-based project developer Econetix has signed a million-dollar forward supply agreement with RWE Supply & Trading for CORSIA-eligible carbon credits, announced September 1, and the deal matters less for its size than for what it confirms: the aviation offsetting scheme is heading into its first compliance cycle with a supply shortfall that both ICAO and IATA now quantify in the hundreds of millions of tonnes. For credit buyers, developers and traders, CORSIA is shifting from a policy framework into a procurement race with a hard deadline.

The Gap, in Numbers

ICAO’s CORSIA Eligible Emissions Unit Supply Project estimates demand of 170 million to 236 million tonnes during the 2024-2026 first phase, against eligible supply from 10 countries of roughly 36 to 38 million tonnes as of June 2026. IATA’s June 2026 market update lands in the same place: a central scenario of 213 million tonnes of first-phase demand and about 38 million tonnes of eligible units, a shortfall of around 175 million tonnes.

The two estimates differ slightly on timing and methodology, but the conclusion is identical. Eligible supply covers roughly one tonne in five or six of potential demand. ICAO frames the upside as a $4 billion to $5 billion climate investment opportunity for developing countries able to issue eligible units, and IATA estimates airlines could buy more than 200 million credits in the first phase, with demand approaching 2 billion credits by 2035 as the scheme matures.

The deadline concentrating minds is January 31, 2028, the date by which airlines must cancel eligible units for the first compliance period. Participation is also widening: ICAO counts 130 states in the scheme from 2026, rising to 134 from 2027, together covering about 85% of international aviation emissions.

Why Supply Cannot Simply Respond

CORSIA eligibility is a filter most voluntary credits cannot pass. For the first phase, ICAO has approved programs including the American Carbon Registry, Gold Standard, Verra’s Verified Carbon Standard and Isometric, but program approval is only the first gate. Credits from 2021 onward also need host-country authorization under Article 6 of the Paris Agreement and evidence of corresponding adjustments, so that the host country does not count the same reduction toward its own climate target after an airline uses the unit.

That requirement is the real bottleneck. A project can issue credits for years without ever obtaining a Letter of Authorization from its host government, and the authorization process depends on national Article 6 infrastructure that many countries are still building. The result is a market where tonnes exist on registries but are not usable for aviation compliance, and where the binding constraint is paperwork in capitals rather than project activity on the ground.

What the Econetix-RWE Deal Signals

The forward structure of the Econetix-RWE agreement is a rational response to that bottleneck. RWE secures access to future CORSIA-eligible supply it can market to airlines through its trading platform and customer network; Econetix gets a committed buyer that makes its pipeline easier to finance. Neither side disclosed volume or value beyond the million-dollar description.

Econetix’s pipeline illustrates where eligible supply is actually coming from. The company reports more than 10 projects across the Democratic Republic of Congo, Uganda, Tanzania, Malawi, Rwanda and Sierra Leone, with Article 6 authorizations including a Rwandan cookstove project cleared for up to 1.77 million tonnes of CORSIA supply and an August authorization from Uganda covering up to 10 million tonnes of CO2e for 2025-2030 vintages, described as the largest single Article 6 authorization granted to a private company in that country. It has also signed supply deals with SCB Environmental Markets and SmartestEnergy, and in July delivered its first Phase 1-tagged CORSIA credits under an earlier million-dollar agreement with a major international commodity trading house.

The delivery matters as much as the authorizations. Host-country letters establish potential supply; tagged, delivered units establish actual supply. The distance between the two is where most of the 175-million-tonne gap sits.

Jurisdictions Are Racing for the Same Revenue

The shortage is also redrawing the map of who captures CORSIA value. A market intelligence analysis reported by Carbon Pulse this week estimates that US project developers will miss out on up to $2.7 billion in potential revenue without the ability to deliver US-hosted, CORSIA-aligned supply at scale. The early authorizations flowing to African host countries, and to developers with Article 6 relationships already in place, suggest the first-mover advantage is compounding.

For host governments, the incentive is explicit: every corresponding adjustment granted converts domestic mitigation into export revenue, at the cost of surrendering the reduction from the national inventory. Expect more countries to treat Article 6 authorization capacity as economic policy rather than technical housekeeping.

What Buyers and Developers Should Watch

Three markers between now and the January 2028 cancellation deadline. First, the pace of new host-country authorizations, since each one moves tonnes from the theoretical to the eligible column and is the single largest lever on supply. Second, whether forward agreements keep proliferating or give way to spot anxiety as the deadline approaches, which would show up in the price spread between CORSIA-eligible and non-eligible units from the same programs. Third, ICAO’s program eligibility decisions, because any expansion or tightening of the approved list instantly reprices existing portfolios.

The practical implications split cleanly by seat. Airlines and their intermediaries face a procurement problem: eligible volume is finite, deadlines are fixed, and waiting is a position, not a strategy. Developers with authorizable supply hold an asset that is appreciating in strategic value, and forward offtake is the instrument that converts it into finance. Investors should read each new Letter of Authorization as the market’s real supply data, because registry issuance volumes alone now overstate what airlines can actually use.