# How do we count emissions from technicians visiting customer sites?

Canonical: https://senseible.earth/answers/field-service-technician-visits-emissions

It follows who owns the vehicle. Company vehicles are Scope 1 from their fuel invoices. Technicians using their own vehicles and claiming mileage are Scope 3 Category 6, as are taxis, trains and hotel nights. A contracted service partner's emissions are part of what you buy, Scope 3 Category 1.

## Data to keep

- Fuel invoices for company vehicles.
- Mileage claims with km per trip.
- Travel and hotel bills.
- Invoices from service partners.

## Per visit figure

Divide the year's service emissions by the number of visits if a customer asks for a per-visit number, and say what is included.

## What Senseible does here

Senseible reads supplier invoices into dated records with the quantity, unit and factor on each line, and marks lines without a usable quantity as needing data instead of guessing.

- [Field sales travel](https://senseible.earth/answers/field-sales-team-travel-emissions)
- [Business car travel scope](https://senseible.earth/answers/business-car-travel-which-scope)

Sources: [GHG Protocol Corporate Value Chain (Scope 3) Standard](https://ghgprotocol.org/corporate-value-chain-scope-3-standard), [GHG Protocol Corporate Standard](https://ghgprotocol.org/corporate-standard)

Last reviewed 2026-10-23.