ICEC for United Nations Organizations (UN-ICEC)

The United Nations interface of the ICAO Carbon Emissions Calculator (UN ICEC) is the official tool of the UN system for estimating CO₂ emissions from air travel. It is available as an MS Excel® application and through an Application Programming Interface (API), enabling consistent and harmonized emissions calculations across UN entities.
The UN ICEC is designed for use by UN organizations to support sustainability management and reporting, particularly the preparation of the UN system-wide greenhouse gas inventory, supporting the Greening the Blue Initiative. To access the last version of the Greening the Blue report, please click on the image below.
 

METHODOLOGY

• UN ICEC v6.0 calculates CO₂ emissions across four cabin classes: Economy, Premium Economy, Business, and First.
• It provides CO₂ emissions estimates per passenger, supporting UN entities in assessing and reporting their environmental impact. The methodology has been refined to improve usability, including enhanced estimates for airport pairs with limited data, minimizing user input while maximizing accuracy.

SUPPORTING MATERIAL

To request the UN ICEC for your UN organization, please contact the Greening the Blue team (click here).