Seven (7) candidates submitted expressions of interest for the implementation of the Serres waste management project via a PPP:* ARCHΙRODON GROUP - INTRAKAT - ENVITEC* MESOGEIOS - J&P AVAX* TERNA ENERGY * NOVAERA HELLAS* KLEARCHOS G. ROUTSIS - ERETVO* AKTOR CONCESSIONS - HELEKTOR* ADAMIDES SA