The main objective of the project is to improve air quality by reducing the so-called. “low emissions” and reduction of energy losses arising from energy and heat distribution. The goal will be achieved by expanding the network and connecting new customers, as well as by modernising the old heating network. The project aims to modernise and expand the network on three districts of Kędzierzyna-Koźla, in terms of modernisation through a thorough replacement of the existing heat network made in traditional technology with a new pre-insulated one. As part of the construction and assembly works, 5 tasks were distinguished, which constitute 3 stages of the modernisation of the thermal grid and 2 stages of the expansion of the thermal grid.