Abstract: Politicians, academics, enterprises, users, and industries have different understandings of the concept of ubiquitous power Internet of Things. This difference is not only due to the interests of these subjects and the inertia of thinking. The more important reason is the ambiguity and variability of the concepts of Internet of Things, the Internet, and informationization. The vagueness and change of these concepts will inevitably lead to contradictions and tensions in practice and construction. To resolve these contradictions, we must fundamentally analyze the concepts of the Internet, grid information, smart grid, strong smart grid, energy Internet, and power energy Internet, and clarify the boundaries of each concept. On the basis of clear concepts, the construction of ubiquitous power Internet of Things requires the establishment of specialized research institutions to strengthen data security protection, explore data integration and integration across the industry, and strengthen the integration of industrial ecosystems.