Emissions reporting
Emissions Reporting for Trucking Fleets, Without the Spreadsheet
Shippers are asking carriers for emissions data, and the request rarely arrives with instructions. This is what a defensible fleet emissions report contains and how it is produced from data you already have.
The request that arrives without a specification
For most carriers, emissions reporting starts with an email from a customer. They need CO₂ figures for the freight you moved, sometimes for a tender, sometimes for their own reporting obligations. What the email usually does not say is which emissions factor to use, which boundary applies, or what format is acceptable.
So the first attempt is a spreadsheet. Someone pulls fuel totals, finds a conversion factor online, multiplies, and sends a number. It satisfies the immediate request and creates a quiet problem: nobody can reconstruct how the figure was produced, the next person to do it will pick a different factor, and the two reports will not agree.
The fix is not more spreadsheet discipline. It is deciding the methodology once, writing it down, and applying it the same way every period.
What a defensible report has to state
The emissions factor, named
The boundary
The period and the vehicles
Intensity, not only totals
How the calculation actually works
For a diesel fleet the arithmetic is not complicated, which is worth saying plainly because the topic is often made to sound like it is. Fuel consumed is multiplied by an emissions factor. Everything else is bookkeeping.
CleanFreight uses the SmartWay factor of 2,689 grams of CO₂ per litre of diesel, then applies a 1.0235 uplift to account for methane and nitrous oxide, giving CO₂ equivalent. That is approximately 2.68 kilograms of CO₂e per litre. Intensity follows from dividing the resulting CO₂e by distance, giving grams of CO₂e per kilometre.
The factor is deliberately not user-editable. A configurable emissions factor is a way to produce whatever number you would like, and it makes comparison between periods and between carriers meaningless. Fixing it is what allows one fleet's report to be read alongside another's.
Calculations run daily per vehicle rather than monthly across the fleet, which matters for the same reason it matters in fuel analysis: a monthly aggregate cannot show you which vehicles or which weeks drove the change.
Why this belongs with fuel, not beside it
Emissions and fuel are frequently treated as separate programmes with separate owners, and for a diesel fleet that separation makes very little sense. Emissions are derived from fuel. A litre you do not burn is about 2.68 kilograms of CO₂e you do not emit. There is no version of reducing one that does not reduce the other.
The practical consequence is that the work already justified on cost grounds is the same work that improves the sustainability position. The nine trucks running above baseline are simultaneously the fuel problem and the emissions problem, and addressing them once resolves both.
It also means the sustainability report and the fuel analysis should be drawing on one dataset. When they do not, the two eventually disagree, and reconciling them becomes its own recurring task.
Methodology and standards
CleanFreight's methodology follows the SmartWay emissions factors and aligns with the reporting principles set out by the Smart Freight Centre, whose GLEC Framework is the reference most shippers work from when they ask a carrier for freight emissions data.
Every figure the platform produces carries its calculation basis with it, and the methodology is documented in the product rather than kept somewhere separate, so the person answering a customer's question can see exactly what they are sending.
Common questions
What counts as Scope 1 emissions for a trucking fleet?
Scope 1 covers direct emissions from sources the company owns or controls, which for a carrier means the fuel burned in its own vehicles. If you know how much fuel each truck consumed, you have what a Scope 1 calculation needs.
Which emissions factor does CleanFreight use?
2,689 grams of CO₂ per litre of diesel, the SmartWay factor, uplifted by 1.0235 to account for methane and nitrous oxide and expressed as CO₂e. That works out to roughly 2.68 kilograms of CO₂e per litre, and the value is fixed rather than user-editable so that reports stay comparable between fleets and over time.
Is this Tank-to-Wheel or Well-to-Wheel?
Tank-to-Wheel. The figures cover emissions from burning the fuel, not the upstream emissions from producing and distributing it. That is the boundary Scope 1 reporting asks for, and stating it explicitly is part of a defensible report.
What is emissions intensity and why does it matter more than the total?
Intensity is grams of CO₂e per kilometre. Totals rise when you haul more freight, which makes a growing fleet look like a worsening one. Intensity separates efficiency from volume, so it is the number that shows whether the operation is actually improving.
Can I produce a report a shipper will accept?
That is the intent. Reports state the emissions factor, the calculation boundary, the period covered, and the vehicles included, so a customer or auditor can see how the figure was produced rather than being asked to trust it.
Do fuel savings and emissions reductions track each other?
For a diesel fleet, almost exactly. Emissions are calculated from fuel burned, so a litre not consumed is roughly 2.68 kilograms of CO₂e not emitted. The same work reduces both, which is why they belong in one system rather than two.
Related: fleet fuel intelligence, telematics integrations, and the CleanFreight platform.
Fuel savings and emissions reductions are the same work
Start with the fuel number, because it is the one that pays for the programme. The emissions reporting follows from the same data.