This document is the report of my second semester project at IPESE. Its objectives were to validate the energetic strategy 2035 of the “Canton du Valais”. The lecturer will see how the Swiss-Energyscope model has been adapted to the canton of Valais to compare the scenario given by canton of Valais. By modelling the energetic model for the canton of Valais and simulating the outcome 2050, the role of Valais as part of Switzerland had to be considered. The Swiss Energyscope (SES by Stefano Moret [2]) regionalised by cantons has been created. The exchange of ressources (Waste, Wood, Gas and Electricity) has been visualised using a chord diagram. We were able to show the differences when optimising on a more global aspect. In fact, the electricity production in Valais for 2050 7 times higher when optimising Valais as a part of Switzerland compared to the optimisation on Valais only. This higher electricity generation has a 50% higher total cost. We were able to validate the energetic strategy, due to same ressource use and similar cost (8% difference).