The ETS Handbook 2020 is a comprehensive guide on the design and implementation of emissions trading. It was prepared by Vivid Economics, supported by the World Bank and the ICAP Secretariat, and updated with contributions from a team of experts and practitioners. The handbook covers various aspects of emissions trading, including market design, participant participation, monitoring and reporting, and policy design. It also includes case studies from different ETS jurisdictions. Overall, the ETS Handbook 2020 is a valuable resource for policymakers, practitioners, and researchers interested in emissions trading.