The initiative compiles a listof the 150 largest Czech companies, according to their reported turnover for their last fiscal year. These companies were asked to provide their emissions and revenue data. Data collection for Carbon Tracker 2023 was launched on 10 May 2023, questionnaires can be filled in until the end of June 2023.

In addition, we conduct a detailed review of the publicly available data related to these companies, such as financial and non-financial reports and CDP databases. The calculation methodology is based on the internationally recognized GHG protocol, more details can be found on the website here.