The aim of the CONSTRUCEC project is to develop the skills of workers working in the mainwork and public works through practical technical training in real situations in order to adapt them to the needs of companies and the requirements of the regulations. The training will cover the following topics: construction techniques, renovation of buildings and passive renovation and very low energy smart and connected buildings (Smart Grid) smart and connected (Smart Grid) sustainable buildings, circular economy comfort of buildings and health of occupants safety and health at work.