Carbon Emissions in Shipping: Challenges and Solutions

Carbon emissions in shipping pose quite a few challenges, and one of them is that they typically don’t show up where most companies would expect to see them. When it comes to sustainability, a business might have an efficient warehouse and an electric delivery fleet, but still find that a large portion of its environmental impact extends beyond its own boundaries. Scope 3 emissions are the reason that gap exists, since they capture everything happening outside a company’s own walls, from supplier factories to the trucks and ships carrying finished goods.

Consider the scale of it. Scope 3 emissions can account for more than 85% of an enterprise’s total carbon footprint, and within that category, few contributors are as significant as freight movement itself. Carbon emissions in shipping cut across ocean carriers, rail operators, trucking fleets and last-mile couriers, each with its own systems, standards and, in many cases, no standard at all. For a business that has already tidied up its own operations, this is where the real opportunity for leadership begins.

Indirect Supply Chain Emissions

Thus, in such a case, the idea of indirect supply chain emissions may prove useful. This particular category is the widest in terms of reporting by any company, since it covers all indirect emissions due to the operations of the company. Freight is only one line item within scope 3 emissions, which is precisely why it gets singled out first. It’s the piece of the puzzle that’s actually visible. These are, for instance, carbon emissions in shipping, which make up an important portion of total emissions. These include freight transport, packaging and energy used at the third-party warehouses. For most companies engaged in logistics, this is the largest portion of their emissions, which is why it gets very little attention. This surely needs to change in the future.

Why Carbon Emissions in Shipping Are So Hard to Pin Down

Anyone who has tried to put a precise figure on carbon emissions in shipping knows the exercise quickly turns challenging. Measuring a company-owned fleet is fairly easy. Fuel receipts and mileage logs tell most of the story.

• 1- The moment goods pass to a network of external carriers, though, that clarity fades, and tracking carbon emissions in shipping stops being a spreadsheet task and starts being a negotiation.
• 2- Scope 3 emissions in shipping become distributed across dozens of independent operators, each reporting differently, some not reporting at all.
• 3- The resulting picture, more often than not, understates the true footprint rather than overstating it, simply because the data behind it is incomplete.
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This is precisely why forward-thinking companies are choosing to engage directly with their carriers, requesting granular figures rather than settling for industry averages. It is not the easiest route, but it is the one that produces numbers a business can actually trust and build a strategy around.

The Scope 3 Supply Chain Emissions

But the carbon emissions in shipping are a mere fraction of the much larger issue. Scope 3 emissions also include the carbon footprint of extraction, production, and the commute of workers for the raw materials used in the manufacturing process in foreign countries. The visibility of shipping, as compared to other obscure categories such as supplier-level manufacturing carbon emissions, as well as how easy it is to measure, mostly dominates the bulk of any discussion in this regard.

But there is a price to pay for visibility. The carbon emissions from the shipping process are usually the first step of companies’ Scope 3 reporting process, simply because it is easier to trace than those emissions hidden further down in the supply chain. While creating an action plan for addressing emissions, choosing carbon emissions in shipping as a priority is never coincidental. It is often the easiest success for companies to deliver before they create an emissions strategy.

Why This Matters Beyond Compliance

Lowering carbon emissions in shipping by smarter routing or routing optimisation, slower steaming on long sea voyages or by using rail instead of road freight more often can often reduce fuel costs as well as carbon emissions, and reducing carbon emissions in shipping is likely to yield a reasonable return on investment within a reasonable time period.

• 1- It’s more likely that the two goals will be going in the same direction more often than businesses would expect.
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• 2- By itself, only good intentions will not eliminate carbon emissions in shipping. They require consistent measurement, supplier collaboration, and a willingness to accept that early figures may look worse before they look better as data quality improves.
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• 3- Companies that take carbon emissions in shipping as a long-term mission instead of a box-ticking exercise will be positioned better than their competitors.
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The businesses that will lead the next decade of logistics are not necessarily the ones with the lowest emissions today. They are the ones asking the sharpest questions about where their footprint actually lives, and building the visibility to act on the answer. Carbon emissions in shipping fall at the intersection of cost, efficiency and reputation, which makes this less a compliance exercise and more a strategic advantage waiting to be claimed.

Closing Thoughts

The conversation is shifting, quietly but decisively, from whether to measure carbon emissions in shipping to how quickly a business can turn that measurement into momentum. Getting scope 3 emissions under control needs to be about continuous effort. Those that get ahead of that shift will not just report a smaller footprint; they will tell a genuinely better story about how their goods move through the world, and that story is one that carbon emissions in shipping alone cannot tell without the rest of the value chain behind it.