The technical object of the project is the energy upgrade of the KEK building of the Region of Thessaly on Karditsis 2 in Larissa. The total area of the building (together with the auxiliary spaces) is 514.41 m². The aim of the project is to minimise as far as possible the energy consumption for the proper operation of the building, through:the bioclimatic design of the building shell, utilising the location of the building in terms of the surrounding area, the solar available radiation per face orientation, etc., the thermal insulation of the building with the appropriate application of the building with the appropriate application of thermal insulation in the non-transparent building elements, avoiding, as far as possible, the creation of thermal bridges, and the choice of the appliances of high-energy suitability.