Santa Rita do Sapucaí stands out as a unique city, renowned for its technology companies and successful enterprises. This book seeks to unravel the history behind the city s innovative essence, exploring why its successful events are not replicable in other places. Using the construction of the first large-scale hydroelectric power plant in southern Minas Gerais as a backdrop, the author interweaves fictional details with period documents and personal experiences, recovering information lost over time. The story begins at the dawn of the 20th century, an era when the great discoveries of the previous century were starting to impact people s lives. With a forward-looking vision, Tonico Moreira aspired to accomplish something capable of transforming his community. The book presents the results of historical research and analyzes successive events, aiming to explain why Santa Rita do Sapucaí is an enlightened city. Each page reveals the unique elements that, over time, have contributed to the remarkable trajectory of this city, marked by innovation and an entrepreneurial spirit.