SMED stands for Swedish Environmental Emissions Data, a collaboration between IVL, SCB, SLU, and SMHI. On behalf of the Swedish Environmental Protection Agency, SMED has updated and further developed an Excel tool (the Climate Calculation Tool) that can be used by government agencies to calculate carbon dioxide and greenhouse gas emissions from business travel and the use of machinery or vehicles during official duties. This assignment aimed to meet the requirements of the environmental management regulation concerning environmental management within government agencies, as well as providing a general tool for calculating climate emissions from the agency's passenger transport, business trips, and the use of vehicles and machinery during official functions.

Previously, the tool only included carbon dioxide emissions (before 2018) and did not consider other greenhouse gases or indirect emissions related to the production and distribution of fuel. In 2018, the tool was more comprehensively developed and updated, including changes to categories and interfaces to better reflect the current transport sector. Additional greenhouse gases (methane and nitrous oxide) and emissions values over the entire fuel lifecycle were included. Between 2019 and 2023, simpler updates and minor developments were carried out on the tool. Last year, in 2024, categories such as helicopters and airplanes were added, and a more extensive revision of the layout was carried out, including a division of business trips into Machinery or means of transport under Public Authority Activities.

This year's assignment (2025) is limited to a review of existing emission factors and the most relevant updates. Most updates pertain to road traffic. Information about fuels has also been reviewed and updated, particularly regarding shares of biofuels, with support from agencies such as the Swedish Energy Agency and the Swedish Transport Administration. For bus and taxi traffic, new data collection efforts were undertaken, and various values have been updated where better and newer information is available.