Freight emissions are moving from a sustainability footnote to a reporting requirement. Over the next two years, shippers, carriers and logistics providers across the UK and Europe will be asked for transport emissions data that is consistent, auditable and calculated to a recognised method.
This guide explains what freight emissions reporting covers, how Scope 1 and Scope 3 apply to road transport, how the GLEC Framework and ISO 14083 work together, and the practical steps to get your data ready before customers, auditors and regulators ask for it.
Why freight emissions reporting matters in 2026
Transport is one of the hardest parts of a carbon footprint to measure. For most manufacturers and retailers, freight emissions sit in Scope 3, spread across dozens of carriers, modes and subcontractors. Until recently, many companies relied on rough spend-based estimates. That is now changing.
Several regulatory and market shifts are landing at the same time:
- CSRD in the EU. The Corporate Sustainability Reporting Directive requires in-scope companies to disclose Scope 1, 2 and 3 emissions under ESRS E1. Timelines have been adjusted by the EU simplification package, but companies already reporting are pushing data requests down to their carriers.
- UK SRS. The government has published the final UK Sustainability Reporting Standards (UK SRS S1 and S2), based on the ISSB standards. They are voluntary for now, while the FCA consults on reporting requirements for listed companies.
- SECR. Large UK companies already report energy use and Scope 1 and 2 emissions under Streamlined Energy and Carbon Reporting, which includes fuel burned by their own fleets.
- Customer and investor pressure. Companies with science-based targets need credible Scope 3 transport data, and they increasingly ask carriers for shipment-level figures rather than annual averages.
The result is a sharp rise in demand for accurate freight emissions data, and a growing gap between businesses that can provide it and those that cannot.
Who needs freight emissions data?
Almost every business that moves goods now has a reason to measure transport emissions. What changes is the role you play in the chain and the questions you will be asked.
Shippers, manufacturers and retailers
If you buy transport, your freight emissions are mostly Scope 3. Your sustainability team needs totals by carrier, lane and mode for annual reports, and your procurement team needs comparable figures to judge carrier performance in tenders.
Hauliers and road carriers
Carriers sit on the most valuable data: fuel, distance, payload and vehicle type. Customers increasingly expect emissions per shipment on invoices or through an API. Carriers that can supply this quickly are easier to buy from and harder to replace.
Freight forwarders and 3PLs
Forwarders and logistics providers have to combine data from many subcontractors, modes and hubs into one consistent result. They need a single method that works across road, rail, sea and air, and a way to show customers where the numbers came from.
What counts as freight emissions? Scope 1, Scope 2 and Scope 3 explained
The GHG Protocol splits emissions into three scopes. Where your freight emissions land depends on who owns the vehicles and who pays for the transport.
Scope 1: your own fleet
If you operate your own HGVs and vans, the diesel, HVO, LNG or other fuel they burn is a direct Scope 1 emission. Hauliers and own-account operators usually have the best data here, because fuel cards and telematics already record litres and kilometres.
Scope 2: electricity for depots and EV charging
Electricity bought to run warehouses, cross-docks and electric truck charging falls under Scope 2. As fleets electrify, more road freight emissions shift from Scope 1 into Scope 2, so both need to be tracked together.
Scope 3: freight you buy from carriers
For shippers, most transport emissions are indirect. Scope 3 Category 4 covers upstream transportation and distribution you pay for, and Category 9 covers downstream transport of sold products. One carrier’s Scope 1 is its customer’s Scope 3, which is why consistent methods matter across the whole chain.
| Scope | What it covers in logistics | Typical data source |
|---|---|---|
| Scope 1 | Fuel burned by vehicles you own or control | Fuel cards, telematics, fuel invoices |
| Scope 2 | Electricity for depots, warehouses and EV charging | Energy bills, charge point data |
| Scope 3 (Cat. 4 and 9) | Freight purchased from carriers and logistics providers | Carrier data, shipment records, TMS exports |
The GLEC Framework and ISO 14083: how freight emissions are calculated
Two methods now define best practice for logistics carbon accounting. They are designed to work together, so a company following one is largely aligned with the other.
What ISO 14083 requires
ISO 14083:2023 is the international standard for quantifying and reporting greenhouse gas emissions from transport chain operations. It covers every mode, including road, rail, sea, air and inland waterways, plus hub operations such as warehouses and terminals.
The standard breaks a journey into transport chain elements, allocates emissions to each shipment, and requires results to be reported on a well-to-wheel basis. It also asks you to disclose data quality and the share of primary data you used.
How the GLEC Framework puts it into practice
The GLEC Framework from Smart Freight Centre is the industry method for applying ISO 14083. It provides default emission intensity values, guidance on allocation, and accreditation for tools and companies. Version 3 of the framework is aligned with ISO 14083.
Well-to-wheel, not just tailpipe
Well-to-wheel emissions combine tank-to-wheel emissions from burning fuel with well-to-tank emissions from producing and delivering that fuel. Reporting on this basis gives a fair comparison between diesel, biofuels, gas and electric trucks.
How to calculate freight emissions: three data approaches
ISO 14083 and the GLEC Framework accept different levels of data. The more primary data you use, the more accurate and defensible your freight emissions figures become.
1. Primary fuel or energy data
The most accurate method uses actual fuel or electricity consumed per trip, allocated across the shipments on board. It is standard practice for carriers with telematics, and increasingly expected by large shippers.
2. Activity-based modelling with tonne-kilometres
When fuel data is not available, emissions are modelled from shipment weight, distance travelled and an emission intensity for the vehicle type. The basic formula is simple: tonne-kilometres multiplied by an emission factor.
For example, a 20-tonne load moved 300 km equals 6,000 tonne-kilometres. At an illustrative intensity of 0.08 kg CO₂e per tonne-km, that shipment produces about 480 kg CO₂e. Real factors vary by vehicle, load factor and fuel, so use the UK government conversion factors or GLEC default values as a minimum.
3. Spend-based estimates
Spend-based methods multiply freight spend by an average emissions factor per pound or euro. They are quick but imprecise, and they cannot show the effect of better routing, fuller trucks or cleaner fuels. Treat them as a starting point, not a final answer.
Freight emissions by transport mode
Emission intensity varies widely between modes, which is why mode choice is one of the biggest levers on a transport footprint. Per tonne-kilometre, air freight is by far the most carbon intensive, road sits in the middle, and rail, inland waterway and deep-sea shipping are usually the lowest.
Averages hide a lot, though. A full articulated truck on a motorway can outperform a half-empty train, and a short-sea feeder vessel can look very different from a large container ship. Load factor, empty running, vehicle size, fuel type and route all change the result.
That is why ISO 14083 asks for emissions to be calculated per transport chain element. A single shipment might combine a road collection, a sea crossing, a hub transfer and a final road delivery, and each leg is calculated with the most specific data available before the totals are added together.
A 7-step plan to make freight emissions reporting audit-ready
Whether you run trucks or buy transport, the same steps will move your reporting from estimates to evidence. Most teams can complete the first four steps within a quarter, using data they already hold in transport systems, invoices and carrier portals.
- Map your boundary. List every mode, carrier and route in scope, and decide which emissions are Scope 1, 2 or 3.
- Collect shipment data. Pull origin, destination, weight and vehicle type from your TMS, WMS or carrier invoices.
- Request carrier data. Ask carriers for fuel data or ISO 14083 aligned emissions per shipment, not annual averages.
- Choose a recognised method. Calculate to the GLEC Framework and ISO 14083 so results are comparable and accepted by auditors.
- Score your data quality. Record the share of primary versus modelled data and improve it every reporting period.
- Automate the pipeline. Replace spreadsheets with an API or file feed so emissions update as shipments move.
- Report and act. Feed results into CSRD, UK SRS, SECR or customer reports, then use the insight to cut emissions.
The business case for accurate emissions data
Good transport carbon data is not only a compliance cost. It pays back in ways that finance and operations teams recognise.
- Winning and keeping contracts. Large shippers now score carriers on emissions data in tenders. Shipment-level reporting is becoming a condition of doing business.
- Lower fuel spend. The same data that shows emissions also shows empty running, poor load factors and inefficient routes, which are all direct costs.
- Better fleet decisions. Comparing real emissions and costs by lane helps you decide where HVO, gas or electric trucks make sense first.
- Fewer reporting headaches. One trusted dataset can answer customer questionnaires, CDP responses, SBTi progress checks and annual reports.
In short, the companies that treat transport carbon data as operational data, not a once-a-year exercise, get more value from it and spend less time chasing it.
Common freight emissions reporting mistakes to avoid
- Relying only on spend data. It hides the real drivers of emissions and rarely survives assurance.
- Mixing methods between carriers. Different factors and boundaries make totals impossible to compare.
- Reporting tank-to-wheel only. ISO 14083 expects well-to-wheel results, so tailpipe figures understate the footprint.
- Ignoring empty running and hubs. Empty kilometres and warehouse energy belong in the transport chain.
- Leaving it to year end. Annual data collection creates gaps that are hard to fill once a customer or auditor asks.
What is coming next for freight emissions rules
The direction of travel is clear, even where exact dates are still moving. Three developments are worth watching closely.
- CountEmissionsEU. The European Commission has proposed a common framework for transport emissions accounting built on ISO 14083. If adopted, companies that calculate and publish freight emissions would be expected to use the same method.
- ETS2. The EU’s second emissions trading system will put a carbon price on road transport fuels, currently expected from 2028. Fuel costs will start to reflect carbon, which makes efficiency data commercially important.
- Assurance. CSRD and UK SRS both move companies towards independent assurance of reported data. Figures that cannot be traced back to shipments, fuel and factors will be hard to defend.
Businesses that build a clean, automated data pipeline now will be able to answer each of these requests without starting from scratch every time a rule changes.
How Fynlo helps you report freight emissions with confidence
Fynlo is a UK road freight carbon intelligence platform. It calculates shipment-level CO₂e for every carrier and lane you run or buy, using methods aligned with the GLEC Framework and ISO 14083.
- Connect a TMS, telematics feed or file upload and see emissions per shipment within days.
- Combine Scope 1 fleet data and Scope 3 carrier data in one audit-ready dashboard.
- Export results for CSRD, UK SRS, SECR and customer requests without rebuilding spreadsheets.
See how it supports your obligations on our compliance page, explore the Fynlo platform, or talk to our team about a pilot on your own lanes.
Key takeaways
- Freight emissions reporting is shifting from estimates to shipment-level, auditable data.
- Own fleet fuel is Scope 1, depot and charging power is Scope 2, and purchased freight is Scope 3.
- ISO 14083 sets the standard, and the GLEC Framework shows how to apply it in practice.
- Start with the data you have, then raise the share of primary data every period.
You do not need perfect data to begin. A clear boundary, a recognised method and a plan to improve data quality each quarter will put you ahead of most of the market. The earlier you start, the easier each new customer request, audit and regulatory deadline becomes, and the sooner your transport data starts helping you cut both carbon and cost.
Frequently asked questions
What are freight emissions?
Freight emissions are the greenhouse gases released when goods are moved by road, rail, sea, air or inland waterway, plus the energy used at hubs such as warehouses and terminals. They are usually reported in tonnes of CO₂e.
Are freight emissions Scope 1 or Scope 3?
It depends on who controls the vehicles. Fuel burned in trucks you own or operate is Scope 1. Transport you buy from carriers is Scope 3, under Category 4 for upstream freight and Category 9 for downstream distribution.
What is the difference between the GLEC Framework and ISO 14083?
ISO 14083 is the international standard that defines how transport emissions must be calculated and reported. The GLEC Framework is the industry method that applies it in practice, with default values and guidance for each mode.
Do I need ISO 14083 to comply with CSRD or UK SRS?
Neither requires ISO 14083 by name, but both expect Scope 3 emissions calculated with a recognised, consistent method. Using ISO 14083 and the GLEC Framework is the most widely accepted way to make transport data defensible.
What data do I need to calculate transport emissions?
At a minimum you need origin, destination, shipment weight and mode or vehicle type for each shipment. Fuel or energy data from carriers makes the result more accurate, and it is the best way to raise your primary data share over time.
How often should transport emissions be reported?
Annual reports are the legal minimum for most companies, but monthly or shipment-level reporting is fast becoming the norm. Frequent reporting catches data gaps early and lets teams track the effect of operational changes.
How can I reduce freight emissions once I measure them?
Shipment-level data shows where to act. Common levers include fuller loads, fewer empty kilometres, better routing, modal shift to rail or sea, and switching to HVO, gas or electric trucks on suitable lanes.
Calculate freight emissions to the GLEC Framework and ISO 14083, and report Scope 1 and Scope 3 from one dashboard.
- GLEC and ISO 14083 aligned
- Scope 1 and Scope 3 in one view
- Audit-ready CSRD and UK SRS exports