Currently, businesses implementing electrical projects lack the theoretical knowledge of ways to correctly develop the projects given that they are based on empirical knowledge. Consequently, a need has developed to implement lean philosophy and project management as distinctive and renowned pillars to ensure high competitiveness in the market of the sector under study. Through case studies, the literature on the subject demonstrated the importance of proper planning based on cost and time pillars. These pillars were analyzed using Ishikawa tools and a problem tree. The following lean tools were chosen: 5S, visual management, and quality circles. These tools and the project management guidelines, specifically the 47 processes published in the 5th edition of the Project Management Body of Knowledge, were applied as a model proposal at a pilot company in which the results of how this combination of solutions reduces delivery times for that organization were compared.