Following the guidelines of the measures contained in the Clean Energy for All Europeans package, presented at the end of 2016 by the European Commission, the 2017 National Energy Strategy (NES) confirms the key role of energy efficiency in Italian energy transition path. The NES aims to strengthen energy efficiency policies by facilitating the measures that have the best cost-effectiveness ratio in order to achieve 30% energy savings by 2030 compared to the expected consumption at that date.