The general objective of the phased project is to continue and complete the works of the project “Retrofitting the district heating system in Bacău in order to comply with environmental protection standards regarding pollutant emissions to air and to increase efficiency in urban heat supply”, works that were started under SOP Environment 2007-2013. The proposed project contributes to the achievement of indicator 2S61, “energy losses recorded on the transmission and distribution networks of the thermal agent”, i.e. the reduction of the indicator by approx. 7 % (data according to initial design SF) as a component of the specific objective OS 7.1. Increase energy efficiency in centralised heat transmission and distribution systems in selected cities.