The present work focuses on energy efficiency and savings achieved at Tenneco’s Chivasso plant (Turin), one of the leading production sites in the powertrain sector of the automotive industry. During my internship, I managed and implemented several initiatives aimed at reducing energy consumption, lowering operational costs, and minimizing environmental impact. The activities carried out involved multiple areas of intervention, among which the optimization of compressed air systems, the revamping of internal lighting, the introduction of new energy KPIs, and the implementation of a shutdown program for production lines. Moreover, a preliminary analysis of photovoltaic systems for on-site renewable energy production was performed.