Smart grids are electrical distribution systems that incorporate advanced communication and control technologies to optimize the generation, distribution, and consumption of electrical energy. The main goal of smart grids is to improve operational efficiency, reduce energy losses, increase reliability, and enable the integration of renewable energy sources. The costbenefit analysis of implementing smart grids technologies involves comparing the costs implied in the installation and operation of these grids with the benefits derived from them. The cost-benefit analysis of implementing smart grids in a country like Colombia will depend on specific factors, such as the structure of the electrical network, implementation costs, energy policy objectives, and other socioeconomic factors. This article presents the determination of the benefits of implementing smart grids under different scenarios using the WeSIm model.