The  Greenhouse Gas Abatement Cost Model (GACMO) is an emissions projection tool that allows countries to carry out rapid, accurate scenario analyses of how a variety of mitigation options across different economic sectors impact emissions. Thereby, it increases transparency and contributes to informed decision making.

The tool can provide government experts with valuable input for preparing and updating NDCs by identifying NDC targets for emissions reductions and by providing assessments of future emissions in different climate action scenarios. It can also help reporting through the biennial transparency reports under the Paris Agreement.

A new version of GACMO was released in 2024. The new version follows the same methodological approach, but has a user-friendly step-by-step improved interface, and comes with detailed guidance and two video tutorials.

The tutorial videos above have subtitles in English, French and Spanish. To activate them, please click on the settings button, on the right side of the cc button, and select the subtitle language of your choice. 

If you would like to know more about GACMO or for any technical support issues, please contact ICAT’s Implementing Partner, UNEP-CCC.