Klimatkalkylatorn version 2.0

The report details the methodology of the Klimatkalkylatorn version 2.0, which calculates individual carbon footprints based on four consumption areas: housing, food, transport, and shopping. It utilizes 2019 data from Statistics Sweden (SCB) and other sources to assign emission factors to spending and usage patterns. The tool incorporates Global Warming Potential (GWP) over 100 years for CO2, methane, and nitrous oxide, and compares individual results against Swedish and global averages, as well as a 2030 target of 4 tonnes of CO2e per person.

• The calculator uses carbon dioxide equivalents (CO2e) based on the IPCC's 100-year Global Warming Potential (GWP), where methane is approximately 28 times and nitrous oxide is approximately 273 times more powerful than carbon dioxide.
• Housing emissions are estimated using energy consumption data based on dwelling type, size, and age, with a specific emission factor of 8 grams CO2e/kWh applied to certified renewable electricity to account for infrastructure production.
• Food consumption impact is calculated based on weekly spending and the user's diet; compared to a standard mixed diet (index 100), a vegan diet is estimated to reduce impact by 70%, while a meat-heavy diet increases it by 30%.
• To avoid penalizing users for the higher cost of organic food, the tool applies a reduction in calculated impact based on a 2019 PRO study finding that organic foods were on average 18% more expensive than conventional ones.
• Transport calculations include both direct fuel emissions and indirect emissions from vehicle manufacturing, and categorize air travel into six zones with average round-trip distances ranging from 1,300 km (domestic Sweden) to 35,000 km (e.g., Antarctica).
• The tool assumes that the consumption of secondhand clothes and furniture does not contribute to climate-impacting emissions as a simplification to encourage reuse.
• A fixed value of 3.7 tonnes of CO2e per person is added to every result to account for the public sector and investments, which represented approximately 40% of Sweden's total consumption-based impact in 2019.
• The tool compares individual footprints against a 2019 average for Sweden (9 tonnes CO2e), a 2019 global average (6.5 tonnes CO2e), and a 2030 target of 4 tonnes CO2e per person set by WWF.

APA

Axelsson, K., Grah, R., & Gong, J. (2022). Klimatkalkylatorn version 2.0. Stockholm Environment Institute. https://www.sei.org/wp-content/uploads/2022/12/klimatkalkylatornversion2-sei2022.054corr.pdf

Chicago

Axelsson, Katarina, Rok Grah, and Jindan Gong. Klimatkalkylatorn version 2.0. Stockholm Environment Institute, 2022. https://www.sei.org/wp-content/uploads/2022/12/klimatkalkylatornversion2-sei2022.054corr.pdf.

Wikipedia

{{cite report |last1=Axelsson |first1=Katarina |last2=Grah |first2=Rok |last3=Gong |first3=Jindan |title=Klimatkalkylatorn version 2.0 |publisher=Stockholm Environment Institute |date=December 2022 |url=https://www.sei.org/wp-content/uploads/2022/12/klimatkalkylatornversion2-sei2022.054corr.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{axelsson2022klimatkalkylatorn, author = {Axelsson, Katarina and Grah, Rok and Gong, Jindan}, title = {{Klimatkalkylatorn version 2.0}}, institution = {Stockholm Environment Institute}, year = {2022}, month = dec, url = {https://www.sei.org/wp-content/uploads/2022/12/klimatkalkylatornversion2-sei2022.054corr.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }