The Energy Statistics Pocketbook 2021 is a publication by the United Nations Department of Economic and Social Affairs' Statistics Division. It provides a comprehensive overview of global energy statistics, including data on energy production, consumption, and prices. The report covers various energy sources, including fossil fuels, renewable energy, and nuclear energy. It also includes information on energy-related greenhouse gas emissions and energy access in developing countries. The report is intended to provide policymakers, researchers, and other stakeholders with a useful reference for understanding the current state of the global energy sector.