Carbon assessment is beginning to be widely used in research. It is used to quantify the amount of Greenhouse gases (GHG) emissions of an activity and even tend to be part of the indicators that serve to evaluate labs. Databases and tools are available. Methods as well but they have to be adapted to each case, depending on the activities of the organization or company to be studied and the way people in charge want to build their assessment. This article aims at proposing a method for the assessment of GHG emissions of research projects. Being organized around the different activities within a research project, this method takes into account all aspects of the project. It allows a good picture and analysis of GHG emissions linked to a project.

The commuting home-work trips is an important contributor of the Greenhouses Gases (GHG) emissions of cities. In the campus "cité scientifique" of University of Lille, the commuting trips represent more than 50% of the total GHG emission. But during the pandemic, working at home change lead to significantly reduce these daily trips. At first sight, teleworking seems a valuable mean to cut these emissions by working at home and avoiding home-work trips. However, it requires new tools, such as videoconference, which also lead to indirect GHG emissions. In this paper, the GHG of a small research group on electro-mobility has been analyzed before and during the lockdown. From this case study, the GHG benefit depends on the daily commuting distance and the transport mean. For example, a person with 10-km daily trip using subway will increase its GHG emission by teleworking.

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