Fleet emissions · now onboarding early partners
Your fleet system stays the source of truth. Export its vehicle activity and Terrametri turns it into period-correct emissions — with the calculation tier recorded per figure, and the result flowing into the same disclosure, evidence chain and sign-off as the rest of your carbon data. UK fleets price on all three methods today; for EU fleets, electricity.
How it works
One row per vehicle per period: registration, dates, and litres, distance or kWh. No live link to a fleet provider is involved — you export from the system you already run, so drivers key nothing new. We do this with you during onboarding rather than handing you a spec.
Fuel-based from actual litres; distance over the vehicle’s own efficiency; or distance times a class factor. Whichever ran is stamped on the record, not the vehicle — so a van that was fuel-based in March and distance-based in April says so, and the basis of every figure is auditable rather than assumed.
Owned and leased are Scope 1 fuel and Scope 2 electricity; grey fleet is an employee’s own car, so Scope 3. A plug-in hybrid yields two records from one period, in two scopes, instead of one blended number — and a factor whose scope contradicts the vehicle’s ownership is refused, not filed into the wrong total.
One pipeline
A fleet figure is an ordinary activity record. It is priced with the factor valid for its own period, computed into Scope 1/2/3, carries its evidence, and is attested by a reviewer who did not prepare it — the same path and the same discipline as your carbon accounting and CSRD / ESRS E1 disclosure. Logistics and cold-chain operators get fleet alongside refrigerants and energy in one place.
Two limits, stated here rather than discovered later. A line we cannot price honestly is not priced. UK fleets are covered for fuel and distance; for EU geographies we hold electricity factors but no fuel source, so an EU diesel line is kept with its quantity exactly as recorded and held for review — never estimated, and never priced on another country’s fuel blend. And one combination computes without being filable: distance on a class factor for an owned or leased vehicle reports as Scope 1 distance, which no ESRS E1 sub-line claims, so sign-off is refused rather than reconciling to a total whose parts do not add up. Record litres or an efficiency figure and it prices as fuel instead. Both states are shown on the fleet screen, counted apart from the figures that are ready.
Questions
No. Your fleet system stays the operational source of truth. You export its activity — registration, period, and litres, distance or kWh — and load it as a CSV or through the API; drivers carry on using the system they already have. There is no scheduled sync to configure: today the import is something you (or we, during onboarding) run against an export, not a live link to your fleet provider.
Whichever the data supports, in this order: fuel-based from actual litres; distance divided by the vehicle's own recorded efficiency; or distance times a vehicle-class factor. The tier that produced each figure is stamped on the record itself, not on the vehicle — the same van is fuel-based in a month with a fuel card and distance-based in a month with only an odometer reading, and the record says which.
They are modelled separately because they land in different scopes. Owned and leased vehicles burn their own fuel (Scope 1) and draw their own electricity (Scope 2); a grey-fleet vehicle is an employee's own car, so it is Scope 3. A plug-in hybrid produces two records from one period — a fuel line and an electricity line, in two different scopes — rather than one blended figure. If a vehicle is set up with a factor whose scope contradicts its ownership, the line is refused rather than filed into the wrong total.
UK fleets are complete: DEFRA/DESNZ editions cover fuel and distance, so fuel-based, distance and vehicle-class all price. For EU geographies we hold EEA electricity factors, so an EV or the electric half of a plug-in hybrid prices — but there is no EU fuel factor source, so an EU diesel or petrol line cannot be computed. Those records are kept with their quantity exactly as recorded and held for review; they are never estimated, zeroed, or priced on a UK factor, because a national fuel blend is policy rather than chemistry.
Almost. One combination computes correctly and still cannot be filed: distance priced on a vehicle-class factor for an owned or leased vehicle reports as Scope 1 distance, and the ESRS E1 sub-line breakdown has no Scope 1 line that claims it, so sign-off is refused rather than filing a total whose parts do not add up. Record litres or an efficiency figure for that vehicle and the same journeys price as fuel, which does reconcile. The screen flags these separately from the figures that are ready, so the distinction is visible before sign-off rather than at it.
Fleet is now being onboarded with early partners. The three-tier calculation is built and the tier is recorded per figure — that part is real rather than planned. What is deliberately not built yet is a live link to any fleet provider: activity comes in by CSV or API. We work hands-on with the first cohort rather than claiming a finished, proven-at-scale product.
We’re onboarding early partners now — bring a sample of your fleet activity and we’ll run it through end to end.