You can find an article about DTI-Energies in the latest edition of the magazine "L'Extension" which has as principle theme "les Assises de la Transition Energétique"
"Created by the urban community of Dunkerque and co-organised by the ADEME, the "Assises de la Transition Energétique" has quickly became an reknown meeting for local actors engage in energy transition."
Source: https://www.assises-energie.net/lesassises/histoire/