Today, most existing district heating networks belong to the second or third generation, characterized by supply temperature in the range of 90-120°C. The transition towards new generations foresees a lowering of these values. This change could lead to the integration of devices like heat pumps through which renewable energy can penetrate the sector. This thesis focuses on the analysis of a district heating network and investigates the possibility of reducing the supply temperature and integrate heat pumps. Thanks to modeling of the substations’ functioning, the network operating conditions have been evaluated. Two results deserve to be highlighted: the number of users that hinder the lowering of the network supply temperature are few; for most of the time the network is supplied at temperature higher than needed.