Abstract
When it comes to the construction of an index, one of the main problems is determining the weights that each variable carries. In this article, through models based on the Structural Equation Modelling methodology, an index for the measurement of the evolution of renewable energies is developed, and applied for a group of countries in the European Union. The results show that, in Europe, there are two groups clearly differentiated in terms of their level of development in renewable energy. In the first group, Germany, Spain, France, and Italy stand out while the second group is led by the United Kingdom, and includes countries like Portugal, Finland, and Greece.
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