Harmonizing corporate carbon footprints

• Published in: Nature communications 2021-10, Vol.12 (1), p.6149-6149, Article 6149
• Main Authors: Klaaßen, Lena, Stoll, Christian
• Format: Article
• Language: English
• Subjects: 704/844/2175; 704/844/2739; 706/703; Carbon; Carbon footprint; Carbon neutrality; Climate change; Decarbonization; Emissions; Environmental accounting; Footprint analysis; Global warming; Greenhouse effect; Greenhouse gases; Humanities and Social Sciences; multidisciplinary; Net zero; Science; Science (multidisciplinary); Sustainability reporting; Value chain
• ISSN: 2041-1723; 2041-1723
• DOI: 10.1038/s41467-021-26349-x

Global greenhouse gas emissions need to reach net-zero around mid-century to limit global warming to 1.5 °C. This decarbonization challenge has, inter alia , increased the political and societal pressure on companies to disclose their carbon footprints. As a response, numerous companies announced roadmaps to become carbon neutral or even negative. The first step on the journey towards carbon neutrality, however, is to quantify corporate emissions accurately. Current carbon accounting and reporting practices remain unsystematic and not comparable, particularly for emissions along the value chain (so-called scope 3). Here we present a framework to harmonize scope 3 emissions by accounting for reporting inconsistency, boundary incompleteness, and activity exclusion. In a case study of the tech sector, we find that corporate reports omit half of the total emissions. The framework we present may help companies, investors, and policy makers to identify and close the gaps in corporate carbon footprints. Current carbon accounting and reporting practices remain unsystematic and incomparable, particularly for emissions along the value chain (scope 3). Here the authors present a framework to harmonize scope 3 emissions by accounting for reporting inconsistency, boundary incompleteness, and activity exclusion.