H&M improves data accuracy – and adds nearly 2 million tonnes of emissions to estimates

H&M made a number of data and greenhouse gas emissions calculation improvements over the course of 2023 – almost all of which led to an increase in previous estimates, with almost 2 million tonnes added to its 2022 carbon footprint.

In its 2023 sustainability disclosures, published today alongside its annual and sustainability report, H&M details several initiatives taken last year to improve data accuracy, and reveals that many of its previous figures were underestimated.