Last updated: 2025-10-09

How Opter calculates CO2 emissions

Valid Opter 2024.06.00 and later. Some functional improvements are available if you use Opter 2024.12.00 or later.

The following describes how Opter calculates carbon dioxide emissions (CO2 emissions). More information on CO2 emissions can be found at CO2 emissions in grams, overview.

Conditions

For Opter to calculate CO2 emissions, the following applies:

Consider the following

CO2 emissions

Exact CO2 emissions for an individual transport depend on actual fuel consumption and specific fuel, what other goods were being transported at the same time, how much empty running the transport caused, etc. It is difficult to obtain precise values for this data, so standard values are used for the fuel consumption and the CO2 emission factor. The templates are chosen so that the CO2 emissions data are reliable on average over time.

The statistical report is based on templates. To get it as accurate as possible, you need to find out your actual CO2 emissions, for example by totalling everything refuelled over a period of time. Then try out different factors on services until the sum in the statistics matches the reality and the allocation between different shipments is reasonable.

The CO2 emission factor

The CO2 emission factor is a conversion factor used to show the climate efficiency of transport operation for a particular service and, if applicable, also for a particular price vehicle type during provision of that service. The CO2 emission factor reflects how much of the transport operation is usually an empty run/pickup run for collection and how much is a shared load.

For more information and examples, see the CO2 emission factor for the service and the CO2 emission factor for the price vehicle type below

CO2 emissions calculations in Opter

Opter calculates the following values for CO2 emissions:

  • The order’s estimated CO2 emissions.

    The estimated CO2 emissions are an initial calculation of the CO2 emissions of the order and the calculation is based on the information available at the time the customer places the order. For more details, see How Opter calculates the estimated CO2 emissions of the order below.

  • The shipment’s calculated CO2 emissions.

    Calculated CO2 emissions for a shipment are a more accurate calculation than estimated CO2 emissions for an order, as this calculation is based, among other things, on information about the actual vehicle and distance of the mission. For more details, see How Opter calculates the CO2 emissions of a shipment below.

  • The order’s calculated CO2 emissions.

    The calculated CO2 emissions of an order are a summation of the calculated CO2 emissions of the shipments in the order, and this is therefore a more accurate calculation than the estimated CO2 emissions of an order.

    As of Opter 2024.12.00, you can display the field Calculated CO2 emissions (g) under Data in the Order reception, and the column CO2 emissions, calculated (g) in the order check. What is shown there is the sum of the calculated CO2 emissions from all the shipments in the order.

If the data on which the calculations are based is changed, there may be orders for which the CO2 emissions should be recalculated. For instructions, see Recalculate CO2 emissions for orders.

The CO2 emission factor for the service

The CO2 emission factor is a conversion factor used to show the climate efficiency of transport operation for a particular service and, if applicable, also for a particular price vehicle type during provision of that service. The CO2 emission factor reflects how much of the transport operation is usually an empty run/pickup run for collection and how much is a shared load.

By default, the CO2 emission factor is 100% for all services. If you want a 100% CO2 emission factor for a service, you do not need to make any settings.

Example

  • For example, if the Express service usually consists of an empty run to pick up the delivery from the point of collection and then driving directly to the receiver, the CO2 emission factor can be set to 175%. This setting reflects the fact that the vehicle travels a longer distance to carry out the shipment than just the transport operation itself and no overlap/shared load takes place. This increases the climate impact of the transport.

  • If the “two-hourly service” usually has some overlap, i.e. several deliveries share the actual route travelled, and if the transport has for example been made more efficient by route optimisation, the CO2 emission factor can be set to 80%.

  • If the “five-hourly service” usually has some overlap, i.e. several deliveries share the actual route travelled, and if the transport has for example been made more efficient by route optimisation, the CO2 emission factor can be set to 35%. This setting reflects the fact that the “five-hourly service” usually has a lower carbon footprint than the “two-hourly service” and “Express service”.

The CO2 emission factor for the price vehicle type

The CO2 emission factor is set for the different services, but can also be set for the different price vehicle types on each service.

By default, the CO2 emission factor for all price vehicle types on a service is the same as the factor for the service. This means that it is not necessary to configure any settings for the price vehicle types on the service if the same CO2 emission factor as the service’s is required.

You can see which price vehicle types are linked to the service on the Vehicle types tab in the Services window. If you want to change which price vehicle types are linked to the service, you can double-click on a price vehicle type and it will move to the second column (Excluded/Included).

Example

  • For example, if the Express service with the passenger car price vehicle type usually consists of an empty run to pick up the delivery from the point of collection and then driving directly to the receiver, the CO2 emission factor can, for example, be set to 125%. This setting reflects the fact that the vehicle travels a longer distance to carry out the shipment than just the transport operation itself and no overlap/shared load takes place. This increases the climate impact of the transport.

  • If the Express service with the truck price vehicle type usually has a certain overlap, i.e. several deliveries share the actual route travelled, and, for example, because the transport has been made more efficient by route optimisation, you can set the CO2 emission factor to 90%. This setting reflects the fact that the “Express service” with the “Truck” price vehicle type usually has a lower climate impact than the “Express service” with the “Passenger car” price vehicle type.

Take pricing weight into account when calculating CO2 emissions

You can decide if the pricing weight of the order compared to the capacity of the vehicle is to be taken into account, by using:

  • The Take pricing weight into account when calculating CO2 emissions checkbox in the Services window, on the Emissions tab.

  • The Capacity converted into pricing weight (kg) field in the Vehicles, Vehicle types and/or Price vehicle types windows in the Emissions tab. The field Capacity converted into pricing weight (kg) is also available in the subcontractor register in Opter version 2025.12.00 and later.

    In order to allocate a vehicle's total CO2 emissions to the packages that make up an order, Opter needs to calculate how much of the vehicle's capacity the order occupies. As capacity can be measured in different ways, such as weight, pallet space or dimensions, Opter uses pricing weight as a common measure. Pricing weight is stated in kilograms. For more information on pricing weights, see Calculating the pricing weight.

    When Opter calculates CO2 emissions, the information on Capacity converted into pricing weight (kg) is firstly taken from the vehicle, secondly from the vehicle type and thirdly from the price vehicle type.

    If the shipment is subcontracted, the information on Capacity converted into pricing weight (kg) is obtained firstly from the subcontractor and secondly from the price vehicle type.

Proceed to the next step

Settings for CO2 emission calculations.

See also