In recent years, combined heat and power (CHP) has gained a notable importance in the share of DH owing to the new energy efficiency and greenhouse gas emission objectives, as it allows higher fuel utilization factors [3]. Another reason for this rapid growth is the aforementioned recent improvements in energy efficiency in buildings, which involves lower heat demand, leading to a higher share in the production mix [4]. The integration of CHP and DH is the best alternative for covering the heat supply needs in city areas. This combination is actually the most used system; for instance, it represents over 70% of DH production in Finland [5]. In fact, the European Union (EU) promotes the use of CHP in DH systems, although other heating alternatives are encouraged in the EU Commission's “Energy Roadmap 2050”, which aims to reduce year 1990 greenhouse gas emissions by 80% by the year 2050 [6]. In this sense, the focus is on electrification of the sector by primarily using heat pumps and implementing large-scale electricity heat savings. Nonetheless, a study by Connolly et al. [6] showed that it is possible to achieve the same goals at a lower cost (approx. 15% reduction in heating and cooling costs) by using DH systems.