The subject of the project is a deep and comprehensive thermal modernisation of public buildings in Bydgoszcz. The project includes the following buildings for educational purposes: Junior High School No. 24, School Complex No. 6, School Complex No. 21, School Complex No. 27. The applicant and beneficiary of the project is the City of Bydgoszcz. The project covers the following activities: Construction work; Investor supervision; Project management; Promotion of the project. The following thermo-modernisation works are planned: 1) Junior High School No. 24 – modernisation of central heating, central heating, ventilation, installation of photovoltaic cells, roof warming, replacement of window and door joinery, warming of external walls, warming of the outer walls of the basement, warming of walls on the ground, replacement of luminaires with led. 2) School Complex No. 6 – modernisation of the central heating system, thermal insulation of external walls, modernisation of central heating installations with the use of RES, replacement of hole joinery, modernisation of ventilation system, thermal insulation of ceilings, walls of foundations and cellars, replacement of luminaires and sources with LED sources, introduction of intelligent energy management system, weather automation. 3) School Complex No. 21 – insulation of external walls, stropodachów, replacement of locksmith and door joinery, walling of the entrance doors of the gym room, warming of the floor of the gym, replacement of the installation of central heating, replacement of lighting installation, replacement of mechanical ventilation of the nutritional and sports segment, modernisation of the installation of central heating. All thermo-modernisation works result from energy audits and lighting audits.