Mobile combustion emissions emerge from burning fossil fuels in your company's owned or operated vehicles used to transport people and materials for the company. Typical sources of mobile combustion emissions are company vehicles and trucks as well as mobile types of machinery such as forklifts or construction equipment.
Many of your company-owned vehicles are probably used for business travel and/or commuting. Note that in this case, you should not add those trips again to the sections on Business Travel and Employee Commute, to avoid double counting. Also note that emissions from electric vehicles are categorised under Scope 2, Purchased Electricity, and not Scope 1, Mobile Combustion. Here’s an example to make this clearer:
Type of Vehicle | Used for… | Where to include it for Carbon Accounting |
Company-operated Combustion Engine Vehicle | Business Travel | |
Company-operated Electric Vehicle | Business Travel | |
Company-operated Hybrid Vehicle | Business Travel | |
Private or Third-Party vehicle | Business Travel | |
Company-operated Combustion Engine Vehicle | Commuting | |
Company-operated Electric Vehicle | Commuting |
|
Company-operated Hybrid Vehicle | Commuting | |
Private Vehicle | Commuting | |
Vehicle which your company leases out externally | Use by customers/lessees |
To calculate your mobile combustion emissions you will ideally need consumption data on the amount of fossil fuels burnt (in litres), although alternative calculation methods are available.
Note on Leased Vehicles: Vehicles that are leased by your company to be used by employees can be treated as a normal company-operated vehicle and thus follow the same logic as the rows describe in the table above.