This article treats energy taxation principles in the light of the need to optimise supply by non-EU suppliers. Our model distinguishes and evaluates the three terms of an optimum tax: budget, environment and strategy. Their values depend on technological data (output) and habits (consumption)...

Our paper aims at assessing the efficiency of the European coordination in the field of electricity. For that purpose, we develop various indices allowing a comparison of the European countries as regards the adequacy of their performances with main European goals in terms of energy policy...