Skip to content
Mask Group 70

Helping airlines navigate CORSIA with confidence

Sustainable aviation

Five Facts About Marex
Image 14@2x
2005
Founded in 2005
nasdaq
NASDAQ
Listed April 2024 (MRX)
employees
2,400+
Employees
offices
40+
Offices globally
exchanges
60+
Exchanges globally
Financial Strength (2024)
10-years
10 Years
Of consecutive growth
CAGR
35% CAGR
Of consecutive growth
market-share
~2% Market Share
(>US$70bn estimated serviceable addressable market)

CORSIA carbon credit procurement for secure and cost-effective compliance

As the CORSIA scheme to reduce aviation emissions takes effect, the first compliance period is now fully underway, with the second phase fast approaching. This is narrowing the window for secure and scalable carbon credit procurement, making timely action increasingly important.

Navigating the procurement landscape for CORSIA carbon credits goes beyond basic compliance; it requires managing financial risk, optimising credit sourcing and safeguarding long‑term supply in a shifting market.

Long‑term operational stability is essential as the aviation sector moves toward a low‑carbon future, increasing the need for reliable procurement support.

In this evolving market, CSC offers clear options for CORSIA Eligible Emissions Units (EEUs) that fit your operational, pricing and quality needs. We are a trusted partner to the aviation industry, with deep experience in emissions management and fuel hedging.

CORSIA questions YOU need answered

CORSIA introduces a new category of risk for airlines - one that stretches far beyond sustainability. As the global aviation sector enters its first multi‑year compliance cycle, carriers are now navigating exposure across capital, delivery, and regulatory performance in a market unlike any traditional fuel or commodity.

In our latest video Q&A, we unpack the questions aviation teams are asking most frequently:

  • What makes CORSIA‑eligible credits fundamentally different?
  • How should airlines plan for cost increases over the phase structure?
  • What level of delivery, counterparty and price risk should procurement leaders expect?
  • And what does a resilient CORSIA procurement strategy actually look like?

The message is clear: CORSIA isn’t only a sustainability obligation - it is a risk‑management challenge, and the gap between compliant and non‑compliant approaches is widening quickly.

Mask Group 84-1

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.

What are the challenges for airlines?

As an evolving compliance mechanism, there are many factors at play when developing and implementing a CORSIA strategy.

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.
Mask Group 84

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

Investment Grade

Credit rating from S&P global and Fitch

5,000+

Active Clients

$24.3bn

Total available liquid resources in 2024

Nasdaq

Listed April 2024 (MRX)

18 years

As a leader in the US energy and renewables markets
Mask Group 103

About CSC Commodities

CSC provides market-making and risk management solutions across the refined products complex and associated supply chains, including residual fuels, distillates, LPG, freight and environmental commodities.

Since joining Marex in 2019, CSC has expanded its energy capabilities, offering tailored derivatives, global clearing across major exchanges and bilateral execution through Marex.

Supporting you in the energy transition

With increased geopolitical and climatological unpredictability, coupled with tightening mandatory emissions reduction schemes, commodities have seen higher levels of uncertainty leading to persistent volatility in prices.

At CSC, we can help create net-zero voyage hedges for the shipping sector, supporting operators through the entirety of the voyage lifecycle from freight costs, bunker fuel oil, biofuels, cargo and emissions allowances.

Biofuels

Compliance emissions

Renewable gas

Renewable power

Voluntary carbon

Speak to a specialist today