COCalculation Methodology

Methodology for Calculating CO2 Emissions According to EN16258

CarbonCare analysed, evaluated and compared all global standards on which the various calculators are based. It was found that most of the standards focus on regional areas or specific transport modes and that the methodology of the EU EN16258 standard is the most appropriate.


Norms and Standards of the CarbonCare Carbon Emissions Calculator According to EN16258

EN 16258 is a methodology for the calculation and declaration of energy consumption and GHG emissions of transport services (freight and passengers). The CEN members are the national standards institutes of Belgium, Bulgaria, Denmark, Germany, the former Yugoslav Republic of Macedonia, Estonia, Finland, France, Greece, Ireland, Iceland, Italy, Croatia, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Austria, Poland, Portugal, Romania, Sweden, Switzerland, Slovakia, Slovenia, Spain, the Czech Republic, Turkey, Hungary, the United Kingdom and Cyprus.

Why have we committed to the EN16258 standard and not another standard?

Our research incorporated an assessment of all global standards. This revealed that most so-called standards focus on regional areas (e.g., SmartWay for North America) or have been established by transportation organizations (e.g., TIACA, GLEC, CCWG, IATA etc.), concentrate solely on one mode of transport (e.g., IATA, IMO, ICAO, CCWG etc.) or are research bodies (e.g., COFRET, STREAM etc.). EN16258 is a European standard, but it focuses on all transport modes and is neither an association, nor a research body; moreover, it is a state norm.

Air, sea, road, rail transport vehicles. CO2 emission different level

Detailed Assumptions for Each Mode

Aircraft/Air Cargo/Air-freight
DISTANCESGreat circle distances plus 95km according to EN16258. RF-Index is currently set to 1.0 according to CORE Project of University of Stockholm.UNDERLYING FACTORSData for different aircraft types.
LF: 80% or cargo load factor 70%. LL:
almost 0% since only a few technical flights required positioning.
Trucks/Road Freight
DISTANCESGreat circle distances for delivery tours. In the logistics industry, point to point transports are extremely seldom.UNDERLYING FACTORSData for various truck types (see calculator).
LF: 80% for trucks 7 tonnes and smaller.
LF: 75-80% for larger trucks.
DISTANCESShortest routings based on our own specially developed distance calculator. Distance compared with international, well-known calculators and measured examples.UNDERLYING FACTORSMainly based on CCWG (Clean Cargo Working Group) data. CCWG values corrected for one TEU (twenty-foot equivalent unit) to 10.5 tonnes according to EN16258. Data for cooling available. Fleetwide utilisation factor of 74%; however, there are large differences for different routes varying between 60% and 84%. Currents are compensated for over the timeframe.
Barges/Inland Navigation/Canals & Water Ways
DISTANCESShortest routings based on our own specially developed distance calculator. Distance compared with international, well-known calculators.UNDERLYING FACTORSOwn measurements supplemented with newest STREAM research data. Applied UT of 53% for ships under 2000 tonnes or 55% respectively.
Trains/Railway Cargo
DISTANCESShortest routings based on our own specially developed distance calculator. Distance compared with international, well-known calculators. Routes split up into electrified and diesel train routes.UNDERLYING FACTORSCarbonCare respects the masses for different railway systems. Further, we assess the diesel or electric traction for each route. The electrical consumption (WTW only) is calculated based on IEA national GRID values.
DISTANCESUNDERLYING FACTORSOur own transhipment values, developed for each mode of transport. At airports, there is a 10-hour warehousing period included which respects the national GRID values. Cooling is only calculated for airport transhipping.
Terminal/Cool Storage/Handling
DISTANCESUNDERLYING FACTORSCooling is only calculated for:
  • ROAD transports and truck masses of 13 tonnes and higher
  • SEA transports
  • Transhipping at airports

LF: load factor; LL: Loaded legs; UT: Utilization factor


CO2/CO2e Emission Values

CarbonCare calculates climate change values according to the European standard EN16258. Thus, CO2 values and CO2 equivalents are determined for TTW (Tank-To-Wheel) and WTW (Well-To-Wheel).

CO2 Emission Values