The ICAP Status Report 2020 provides an overview of emissions trading worldwide. The report highlights the current status of emissions trading systems in various countries and regions, including the European Union Emissions Trading System (EU ETS), the Regional Greenhouse Gas Initiative (RGGI), and the California Cap-and-Trade Program. The report also discusses the challenges and opportunities facing emissions trading, such as the need for more comprehensive coverage of emissions sources and the potential for linking emissions trading systems across borders. The ICAP Secretariat acknowledges the contributions of policymakers and collaborators in the emissions trading field, and expresses gratitude for their support.