Decarbonized Transport Solutions: How the Measure-Reduce-Compensate Model Delivers Auditable Results

CMA CGM operates one of the world’s largest container shipping and logistics networks, serving customers in more than 160 countries across the globe [CMA CGM]. The Marseille-headquartered group ranks among the top three container carriers worldwide, with a fleet exceeding 650 vessels and a total capacity above 3.7 million TEU [Alphaliner]. From that foundation of scale, the company has advanced ACT+, a suite of decarbonized transport solutions built on a disciplined, three-step framework.

The premise is straightforward yet rigorous. A decarbonization strategy that skips a step — reducing without measuring, or compensating without reducing — produces claims that struggle to survive an audit. This article examines the operational engine behind CMA CGM’s ambition: the measure, reduce, compensate sequence at the heart of ACT+, along with the well-to-wake accounting, tiered reduction options, and second-generation biofuels that give the framework its credibility.

Why Credible Decarbonized Transport Solutions Start With Measurement

No emissions strategy holds up without an accurate baseline. A reduction claim means little unless the starting point is quantified, and credible carbon reporting depends on measurement that precedes every commitment.

ACT+ opens with a free online estimation tool that allows cargo owners to calculate the carbon footprint of their maritime shipments before selecting any reduction tier [CMA CGM]. The tool converts a shipment into an emissions figure, giving leadership the data needed to set targets, size decarbonization spend, and align each decision with corporate objectives.

This first step converts an abstract sustainability goal into a concrete number. It positions the cargo owner to manage emissions the way any other material cost is managed — measured first, then acted upon with intent. The context sharpens the point: international shipping accounts for roughly 3% of global greenhouse gas emissions, a share the International Maritime Organization has committed to bring to net zero by around 2050 [IMO 2023 GHG Strategy].

Reduction on a Well-to-Wake Basis

Measurement establishes the problem. Reduction resolves it. This is the core of the ACT+ proposition, built on a methodology that distinguishes a credible claim from a cosmetic one: well-to-wake accounting.

Many emissions figures report only tank-to-wake results — the emissions produced when fuel is burned in the engine. That approach flatters the numbers by excluding everything that happens before combustion. Well-to-wake accounting measures the full cycle: the production of the fuel, its transport, and its combustion [IMO Lifecycle GHG Guidelines].

It is the more rigorous standard, and the one that withstands scrutiny from regulators, customers, and investors examining Scope 3 disclosures. For shippers reporting under frameworks such as the GHG Protocol, upstream transport emissions fall within Scope 3, making well-to-wake data essential for defensible reporting [GHG Protocol].

The Role of Second-Generation Biofuels

ACT+ enables cargo owners to reduce the CO2 emissions of their shipments on a well-to-wake basis, drawing primarily on low-carbon alternative fuels — including second-generation biofuels derived from waste and residue feedstocks rather than food crops [CMA CGM].

This distinction is deliberate. Second-generation feedstocks advance emissions reduction without competing with food production, addressing a common objection raised against earlier biofuel generations.

How the ACT+ Reduction Tiers Work

Rather than forcing an all-or-nothing commitment, ACT+ structures reduction into defined tiers, allowing leadership to align each decision with budget cycles, corporate targets, and specific customer commitments [CMA CGM]:

• 10% — an entry commitment for early-stage programs
• 25% — a measured step for lanes under moderate pressure
• 50% — a substantial reduction for priority routes
• Up to 83% — the deepest available reduction on a well-to-wake basis

That tiered architecture reframes decarbonization as a portfolio choice rather than a single switch. A cargo owner can apply the deepest reduction to lanes facing the greatest regulatory or customer pressure, scale a moderate tier across a broader network, and expand commitments over time as targets tighten.

The model advances flexibility and cost control in equal measure — two priorities that sit at the center of every high-volume shipper’s decision.

Compensation: The Closing Step in Decarbonized Transport Solutions

Reduction addresses emissions at the source. It does not, on its own, eliminate every gram. The residual emissions that remain after a cargo owner selects a reduction tier require a complementary mechanism, and ACT+ closes that gap through carbon offsetting.

For the emissions that persist after reduction, ACT+ directs compensation toward carefully selected offset projects [CMA CGM]. This final step moves a shipment from a reduced footprint toward a fully addressed one, completing the sequence that measurement and reduction began.

The order is the point. Compensation serves as the closing step in a disciplined process — not as a substitute for genuine reduction. A program that leads with offsets invites scrutiny for greenwashing, a concern regulators increasingly formalize; the European Union’s Green Claims Directive proposal, for instance, targets unsubstantiated environmental marketing [European Commission]. A program that reduces first and compensates last reflects the hierarchy that credible decarbonization demands.

A Practical Example: The Three-Step Framework in Action

Consider a high-volume shipper managing global freight under long-term customer contracts, with regulatory costs climbing on European lanes and key customers now requesting emissions data for their own reporting. Since January 2024, maritime transport has fallen within the EU Emissions Trading System, adding a direct carbon cost to voyages calling at EU ports [European Commission]. The three-step framework maps directly onto that reality:

1. Measure shipment emissions using the estimation tool to establish a defensible baseline.
2. Reduce by a selected tier — 50%, for instance — on priority lanes, funded through the low-carbon fuel program on a well-to-wake basis.
3. Compensate the residual emissions on those shipments through selected offset projects.

The result is not a marketing narrative. It is a structured, repeatable process that converts an emerging cost into operational advantage — protecting contracts, satisfying regulatory obligations, and strengthening the cargo owner’s position in competitive tenders.

Addressing the Common Objection: Is This Just Greenwashing?

Skeptics reasonably ask whether tiered reduction and offsetting amount to genuine progress or clever accounting. The answer lies in sequence and standard. Supply chain decarbonization succeeds or fails on process discipline.

Measurement without action produces reports no one uses. Reduction without measurement produces claims no one can verify. Compensation without reduction produces exposure no executive wants to defend.

ACT+ sequences all three — measure, reduce, compensate — into a single, coherent model that reduces emissions by up to 83% on a well-to-wake basis and addresses the remainder through selected projects [CMA CGM]. This is not simply a set of environmental services. It is a framework that positions cargo owners to convert regulatory pressure, customer expectation, and investor scrutiny into a durable competitive advantage.

Key Takeaways

Effective decarbonized transport solutions rest on discipline rather than declarations. The measure-reduce-compensate model gives cargo owners a repeatable process that stands up to audit, satisfies Scope 3 disclosure demands, and turns rising carbon costs into strategic positioning.

• Measure first to establish a defensible, quantified baseline.
• Reduce on a well-to-wake basis using second-generation biofuels and tiered commitments up to 83%.
• Compensate last, treating offsets as the closing step rather than a shortcut.

A framework is only as strong as the proof behind it. The single most valuable next step for any cargo owner is to run current priority lanes through an emissions estimation tool and establish that baseline before committing budget. Which step in the framework presents the greatest challenge for your organization today — establishing the baseline, funding the reduction, or proving the result? Share your view in the comments.