The subject of the project is a deep, comprehensive thermal modernisation of public buildings in Bydgoszcz. The project includes buildings for educational purposes: Kindergarten No. 20, Kindergarten No 43, School Complex No. 4, School Complex No. 17, School Complex No. 34. The project covers the following activities: Construction work; Investor supervision; Project management; Promotion of the project. The following thermo-modernisation works are planned: 1) Kindergarten No. 20 – warming of external walls, roofs, walls on the ground; replacement of window and door carpentry, modernisation of central heating and central heating systems, modernisation of lighting with the use of photovoltaic installations. 2) Kindergarten No. 43 – insulation of external walls, outer walls of cellars, ceilings; replacement of door and window carpentry; modernisation of the central heating system, central heating, ventilation; modernisation of lighting using photovoltaic installations. 3) School Complex No. 4 – warming of outer walls of curtains, cellars and peaks; warming of ventilated ceilings; replacement of door and window carpentry; modernisation of ventilation, central heating and heating systems using an air-water heat pump; modernisation of lighting using photovoltaic installations. 4) School Complex No. 17 – warming of external walls, including cellar walls; warming of ceilings; replacement of door and window carpentry; modernisation of hot water and heating installations using an air-water heat pump; modernisation of lighting using photovoltaic installations. 5) School Complex No. 34 – warming of external walls, ceilings, walls of foundations and cellars; replacement of window and door carpentry; modernisation of the ventilation system; modernisation of central heating installations using solar manifold and air-water heat pump and central heating system; modernisation of lighting. All thermo-modernisation works result from the prepared energy audits and lighting.