The debate surrounding the building in Italy of a third nuclear power plant, carried out between the end of the 1950s and the beginning of the 1960s, presents two very different configurations around the installation process. The plan to install the plant on the coast of Liguria failed in 1960, while the same project was approved and carried out in the municipality of Trino, in the province of Vercelli (Piedmont). Through a study of the archives of the municipal library of Trino – which hold the reports on the forms of mobilization carried out in the town of Sestri Levante (Liguria) against the building of a nuclear power plant, along with the correspondence between the mayor of Trino, local and national members of the Christian Democratic Party (DC) and the leaders of the private company in charge of the project – this chapter highlights the role played by local elected officials against and in favor of the plant. In social science literature, this aspect of the story is usually held to be of secondary importance, in a period characterized by the triumph of state-led national energy projects.