This report is one of the GEI research series, which focuses on the global vision. Based on an in-depth analysis of the development of energy interconnection on each continent, this report proposes a systematic planning to build the GEI Backbone Grid. The research is divided into eight chapters. In Chapter 1, the overall situation of the global economy, society, resources, environment, energy and power development are introduced, and challenges for global sustainable development are analyzed. In Chapter 2, the development concepts of the GEI are analyzed. In Chapter 3, with the aim of achieving 2℃ temperature control target, the development trend of energy and power transition is envisioned, and a corresponding scenario is designed. In Chapter 4, the distribution of clean energy resources and layout of major power generation bases are studied. In Chapter 5, based on power balance analysis, the GEI backbone grid plan is proposed. In Chapter 6, the comprehensive benefits brought about by building GEI are assessed. In Chapter 7, the key technologies for the development of GEI are introduced. In Chapter 8, the clean energy and power development path with the global scenario to achieve the 1.5℃ temperature control target are proposed.