The main objective of the work “Power, structure and hegemony: Guidelines for the study of the international governance” is to analyze the incidence of the change of the structural positioning of the most powerful States on the international governance. To proceed in this labor, the first step has been to define the concept of international governance and to decompose it into simpler factors. One of the above mentioned factors is the national power.
This “Volume I: Index of World Power Index”, presents a brief exploration of some theoretical general notions to the study of the national power and certain particular trials to its measurement. The purpose of this review is to identify a set of useful and valuable variables for the design of a scale that contributes to the weighting of the national power.  This way, will proceed with the differentiation of the national capacities -into material, semi-material and immaterial- and then, to the formulation of a statistical instrument that will serve as a technique for a multidimensional measurement of the national power: the World Power Index (WPI). In this book, the results of the WPI are published by the first time –as well as its respective subscripts- for more than 160 countries with annual figures from 1975 until 2013.