Sustainable aviation
Helping airlines navigate CORSIA with confidence.
As the CORSIA scheme to reduce aviation emissions takes effect with the first compliance period in full swing, and a second phase fast-approaching, the window for secure, scalable carbon credit procurement is narrowing.
Navigating the procurement landscape for CORSIA carbon credits goes beyond compliance; it’s about managing financial risk, optimising costs, and safeguarding long-term operational stability as the aviation sector moves towards a low-carbon future.
In this complex market, CSC can provide a wide range of procurement options for CORSIA Eligible Emissions Units (EEUs) that fit your specific pricing, delivery and quality requirements. We are a trusted partner to the airline industry, with proven experience in emissions management and fuel hedging.
How the CORSIA carbon credit program works
Aviation remains one of the most challenging sectors to decarbonise, with electrification constrained by strict weight and space limitations.
To address emissions from international air travel, the International Civil Aviation Organization (ICAO) launched CORSIA — the Carbon Offsetting and Reduction Scheme for International Aviation — the first global, industry-specific compliance mechanism of its kind.
Following a pilot phase (2021–2023), the scheme is now in Phase I (2024–2026). Airlines in participating states must purchase and retire certified carbon credits to offset any emissions exceeding an annual threshold of 10,000 tonnes of CO₂ equivalent.
- Who’s in scope: International operators from participating countries, covering routes between them.
- Eligible credits: Only from ICAO-approved programmes and vintages. These are known as CORSIA Emissions Units (EEUs).
With the first retirement date set for 31 January 2028, impacted airlines must now have a strategy for compliance in the short, mid- and long-term.
Volume constraints
The supply of Eligible Emissions Units (EEUs) is limited by CORSIA’s eligibility criteria. This includes methodology restrictions, host country approval requirements, post-2016 emission reduction projects and other vintages.
Price volatility
Carbon markets remain fragmented and opaque - with pricing influenced by project type and verification methodology, article 6 authorisation premiums and market sentiment ahead of compliance deadlines.
Counterparty risk
Carbon markets involve a complex network of developers, registries, brokers, traders, and various intermediaries. Their financial standing, operational reliability, and regulatory oversight can vary significantly.
Timing mismatch
Airlines that underestimate delivery timelines may start procurement too late, increasing the risk of registry bottlenecks, limited spot market liquidity, and delays in credit delivery and retirement.
How CSC can help you de-risk carbon procurement
Airlines can buy CORSIA Emissions Units (EEUs) in several different ways. Some will buy in ‘spot’ transactions for credits that have already been issued, while others will enter multi-year agreements for the delivery of EEUs on a ‘forward’ basis."
Navigating these various procurement options requires expert insight to ensure optimal outcomes for your airline's long-term CORSIA obligations.
Whether securing annual compliance needs or helping build a procurement roadmap for Phase I and beyond, CSC aims to deliver execution certainty in a volatile market.
Adapting to specific requirements, CSC's trading and origination team supports buyers for the aviation industry with:
- Direct access to ICAO-approved registries
- A range of contract structures to suit your procurement objectives
- Deep expertise in voluntary and compliance markets for carbon credits
- Access to emission reduction projects in which Marex has invested
- Support for due diligence, documentation, management and retirement
Why work with CSC
In a high-stakes compliance market, execution certainty and counterpart trustworthiness will be critical. CSC Commodities is a division of Marex, a NASDAQ-listed global financial services platform.
As a large, diversified provider, we supply of CORSIA Eligible Emissions Units with reliability and expertise.
CSC Commodities is a leading global commodity derivatives specialist. Established in 2013, the company offers a breadth of expertise in crude oil, refined products, freight, emissions management, renewable energy and renewable fuels. With offices in London, New York, Amsterdam, Dubai, and Singapore, CSC Commodities has a strong reputation and reach in the energy markets.
Our deep expertise spans the refined products complex and its supply chains - from fuel oil to distillates, light ends to carbon - linking blends, flows, and logistics with actionable market insight. The team provides tailor-made derivatives, allowing counterparties to
About Marex
select the exact product specifications they require, supported by direct access to a dedicated trading team and a high-touch service model.
CSC’s broad and diversified trading mandate covers residual fuel oils, middle distillates, LPG, dry freight, and a full spectrum of environmental commodities. Since its acquisition by Marex in 2019, CSC has expanded its energy sector market making capabilities.
We offer clearing arrangements on all major global exchanges, including ICE, CME, EEX, and SGX, and facilitate bilateral trading through Marex - making CSC a one-stop shop for energy and environmental markets.
Biofuels
Voluntary Carbon
Compliance Emissions
Renewable Power
Five Facts about Marex
-
Founded in
2005
-
NASDAQ
Listed April 2024
(MRX)
-
2,400+
Employees
-
40+
Offices
globally -
60+
Exchanges
globally
Financial Strength (2024)
-
10 Years
of consecutive growth
-
Investment-grade
Credit rating by S&P Global & Fitch
-
Strong Balance Sheet
With $24.3 bn of total available liquid resources in 2024
As CORSIA enters full implementation, airlines that act early maximise their opportunities to reduce risk, gain price certainty, and achieve compliance.
Book a strategy call with our CORSIA experts to get ahead of your 2024–2026 obligations with confidence.