Calculate Emissions2024-02-20T21:34:18+00:00

THE METHODOLOGY

Bottom-Up Methodology

The calculation uses a bottom-up methodology that calculates transport distances, energy consumption, greenhouse gases CO2 and CO2 equivalents, air pollutants SOx, NOx, NMHC and PM10 as well as external costs for every global transport chain.

That means the emissions are determined on the basis of the energy consumed and the fuel used – unlike the usual top-down approach, in which gCO2e / tkm are multiplied by the freight weight and a distance.  This approach is progressive and allows for the ability to incorporate new types of fuel or vehicle technologies, with only one parameter needing to be adjusted in the calculation workflow.

Sustainable Logistics Supply Chain Green Worldwide Shipping

The European Standard EN 16258 requires the calculation and declaration of energy consumption and GHG emissions of transport services on Tank-to-Wheel (TTW) and Well-to-Wheel (WTW) basis.

Well-to-Wheel Calculation

Green also takes into consideration calculating the complete Well-To-Wheel (WTW) energy accountability cycle.

Well-to-Tank (WTT)

Upstream energy consumption and upstream emissions.
Energy provision, production and distribution.
Also known as primary energy consumption.

Tank-to-Wheel (TTW)

Final energy consumption and vehicle emissions.
Also known as final energy consumption.

Well-to-Wheel (WTW)

Total energy consumption and total emissions.
Sum of operational and upstream activity.

4 steps of

carbon calculation

DETERMINE THE ROUTE

Determination of the route by using the internal routing algorithm and extensive transport-specific GIS data networks.

 Transport Details

Gross weight in tonnes, containers (TEU, FEU) or pallets.

SPLIT INTO TRANSPORT LEGS

A split is made when emission-relevant parameters of the route change. Amongst others these include the following route attributes:

  • Truck: road type (motorway, country road extra-urban, urban)
  • Truck, train: Ferries
  • Truck, train: Change of country(especially important for electricitymixes and biofuel shares)
  • Sea ship: ECA or non-ECA zone
 Origins, Destinations, Waypoints

  • Postal codes
  • UN-/LO CODES
  • IATA codes
  • Railway and loading stations
  • Geographic coordinates

Transport Description

  • Individual vehicle type
  • Fuel types
  • Load factor and empty runs
  • Global emission classes per traffic type
  • Optional refrigerated cargo

Mode of Transport

  • All common truck types
  • All common train types
  • Container, Bulk, RoRo ships
  • Over 280 aircraft types

ENERGY & EMISSION CALCULATION PER LEG

Determination of energy required, the fuel consumption and the emission curves based on:

  • Vehicle attributes, such as vehicle type and emission class (default value or customer-specific value)
  • Route attributes of the section

Formula for calculating energy and emissions for each section with the following parameters:

  • Freight weight
  • Load factor and share of empty runs
  • Fuel type and biofuel share
  • Fuel consumption and emission factors
    based on vehicle attributes
  • Distance per section
 Calculation

  • Global ETW internal routing by transport mode
  • Automatic determination of transfer points for ports, airports and railway stations
  • Network-specific attributes, such as street category, electrification or ECA area
  • Automatic detection of stop-overs based
    on the flight number

Automatic Transport Parameters

  • Vehicle type, fuel quality, emission class per country worldwide
  • Trade lane and ship category
  • Load factors for FTL, LTL, FCL, LCL
  • Identification of the aircraft type based on the flight number

Proven Sources

  • Handbook for Emission Factors, MOVES
  • International Maritime Organization,
  • Clean Cargo
  • Small Emitters Tool Eurocontrol

CARBON EMISSION RESULTS

Totalization of all section results with the following outputs;

  • Energy consumption
  • Greenhouse gases
  • Air pollutants
  • Distances
  • Transport parameters used
  • External costs

Optional outputs;

  • Route as KML-file
  • Subdivision of results per
  • Country (Country split)
  • Fuel (e.g. diesel, electric, MDO/MGO)
 Emissions as WTT and TTW

  • CO2 (carbon dioxide)
  • CO2-e (carbon dioxide equivalents)
  • NOx (nitrogen oxides)
  • SOx (sulphur oxides)
  • PM10 (particulate matters)
  • NMHC (non-methane hydrocarbons)

External costs related to

  • CO2-equivalent
  • Environmental pollutants
  • Accidents
  • Noise

Additional output options

  • Waypoint distances also as KML file
  • Optional split by country, mode of transport or fuel type
  • Detailed description of the calculation parameters used for each section

freight

Quantity of shipped units

Input quantity of units bring shipped in TEU or tonnes.

Unit of measure

Select TEU for container transport.
1 TEU = 1 twenty-foot container.

If TEU is selected, weight is calculated on the Load Type (average, heavy, light).

Freight type

Defines the load factor and empty trip factor for the transport modes Truck and Train if the freight unit is in tonnes.

Tonnes per TEU

Net weight in tonnes of the load carried by a TEU.  This value affects the load factor for Lorry or Train transport if the calculation is mased on TEU.

Ferry routing priority

Normal  Selects a ferry if the detour is 5X longer.

Preferred  Selects a ferry if it shortens the route (independent of detour)

Avoid  Selects a ferry only if the detour would be 100X longer.

origin

City district

Railway station

UN/LOCODE

IATA code

Postal code

Coordinates

 Select the Origin type

Choose between city district, railway station, UN/LOCODE or IATA airport code for each leg of the shipment journey. Enter a Postal ZIP code or choose the transport legs with geographic coordinates through the Google Maps integration

routing

Select each transport leg

After defining the Origin, add a mode of transport for each leg of the routing.  Location format options vary, depending on the mode selected.

Add technical details to each mode for a more accurate calculation (optional)

Extended details can be defined for each mode, if they are known or available.

A different set of criteria is available for input within each mode.  If unknown or left blank, the standard calculation methodology is used.

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