For six months I have following the project of the construction of an anaerobic digestion unit. From the receipt of the construction authorization to the beginning of the work on the construction site. My internship began the March 2nd and has been maintained in teleworking during the confinement, from March 16thto the June 2nd, I finished it on the 28th of August. In fact, I worked for the VEOLIA WATER enterprise in the headquarter in the city of Valence in the south of France; VEOLIA has a public delegation contract with the city of Valence in France. In France, the adoption of an environmental policy leads the cities to develop renewable energy, that is why the city of Valence has decided to build an anaerobic digester.