What is the TEC?
The Travel Emissions Calculator (TEC) is a tool created by the City of Eugene in conjunction with the Council for Responsible Sport.
As a resource for sporting events, conferences, and other events, the TEC allows event organizers to accurately calculate the amount of
greenhouse gases (GHGs) created by travel to and from events. Initially developed to calculate GHGs created by the IAAF World Junior Track
and Field Championships in 2014 hosted at Hayward Field in Eugene, the tool has grown into a valuable resource for events of all sizes.
Alternative modes of transportation, such as public transit and biking, can help reduce the carbon footprint of an event.
The TEC allows event organizers and certifiers to determine the greenhouse gas impacts of an event and offers event organizers a table
in which the number of event attendees can be adjusted to see how small reductions or increases in long distance air travel can significantly
impact the total carbon footprint of an event.
Due to the ease of use and accuracy, anyone can effectively use the TEC. Events need only a list of postal codes, or the International
Country Code of their participants, volunteers and attendees in order to use this calculator. Entering the data takes very little time—simply
copy and paste your list of postal and country codes into the box at the left, enter the zip code of your event's location, and click the Calculate button.
The results can be used to determine greenhouse gas emissions for sustainability certification applications, carbon offset calculations, and in devising strategies to reduce carbon impacts for future events.
How Does it Work?
Behind the scenes, each postal code entry is searched, returning the longitude and latitude. The transit calculator computes the areal distance
between the two locations using the Halversine Formula. That distance, in miles, is then multiplied by the EPA's emissions factors for vehicle
and airplane travel. In line with the EPA's definition, GHGs are calculated in their CO2 equivalence.
These gases, which include carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O), are measured in metric tons
to remain consistent with the conversion factors (for example, kg CO2/vehicle-mile).
For questions about this tool, please contact our Waste Prevention staff at firstname.lastname@example.org.