Abstract This article explores the socio-ecological impacts of Fascist hydropower extraction in the Alpine valleys of Italy, focusing on the Toce river basin during the interwar period. It investigates the conflicts between local communities and hydropower initiatives by private energy companies under Fascism, thereby revealing the regime's communication strategies rooted in its political ecology. By analysing newspaper articles, propaganda outlets and communal archival documents, the study uncovers statal and local perspectives on infrastructure development and its enduring consequences. How the political ecology of Fascism in a high-altitude hydropower construction site became an expression of Fascist modernity will thereby be shown. Despite objections from valley inhabitants, Fascist hydropower projects persisted, perpetuating socio-ecological inequalities after 1945. Even postwar efforts for compensation failed to address the long-lasting impacts on mountain communities. This research reveals the intersection of political ecology and modernist infrastructure development in Mussolini's Italy, and thus also highlights the legacies of Fascist resource extraction policies on the country's peripheral Alpine regions.