Citelum and Eiffage consortium wins City of Paris contract for public lighting and traffic light systems as well as festive and architectural lighting for a total value of more than euros 704 million... Citelum, an EDF Group subsidiary, and Eiffage, through its subsidiary Eiffage Énergie Systèmes, were recently awarded in consortium a 10- year contract from the City of Paris for public lighting and traffic light systems as well as festive and architectural lighting.