This book consists of nine chapters, with analysis and research from three perspectives: epistemology, methodology and practice. It aims to go through in-depth research on what the New Type of Power System (NTPS) is and how to build it, proposes the methodology, analyzes the relationships between the NTPS and the New Type of Energy System (NTES), as well as states the paths for building of the NTES with the NTPS. Notably, the book incorporates the development practice of State Grid and discusses the paths for promoting the building of the NTES with the NTPS.