Techno-economic analysis of possible implementations to the secondary circuit of an existing district heating and cooling plant

District heating has become very important from an environmental point of view as it allows the distribution of heat and cool from renewable sources. This paper will analyse an existing district heating and cooling system in order to compare some possible solutions to be implemented for the end user. In particular starting from the summer and winter thermal energy needs, some types of plant will be designed and then analysed both from technical and economical point of view, in order to give a broad view of the solutions and their relative pros and cons. Alongside this, a remote meter reading and data analysis system was also implemented, so as to have a precise description of the losses from the power station to the end user. In this way it is easier to understand where the system can be improved. Through this analysis, advantages can be gained both for the plant operator, who can sample and analyse energy consumption and flows in the network in real time, and for the end user, who can decide which of the solutions is the most convenient.