The subject of the project is a deep, comprehensive energy modernisation of the building “Toropol” located at ul. Barlicki 13 in Opole and Public High School No. IX located in Opole at ul. Oleska 68. The buildings covered by the project are public buildings and have a significant social function (educational and as sports facilities of regional importance). Due to their comprehensiveness, the thermomodernisation activities are of the nature of a deep energy modernisation involving the following works: insulation of external walls and stropods, modernisation of the c.o. installation as an element of energy modernisation of the building and modernisation of the electrical installation – lighting (only in PLO facility no. IX) replacement of window and door joinery and installation of photovoltaic installation (only in the building “Toropol”). All actions in a comprehensive manner lead to improved energy efficiency of buildings. The implementation of the project was preceded by energy audits, which precisely defined their energy performance and indicated the possibilities of making improvements in such a way that the implementation of the investment was as effective as possible. As a result of the implementation of the investment, 4 buildings with a total usable area of 6 914.63 m² will be modernised.