European Open Procedure For The Awarding Of The Mixed Concession, Through The Institute Of Project Finance Pursuant To Art. 193 Legislative Decree. 36/2023, Of The Energy Performance Service (C.D. Energy Performance Contract) Aimed At The Design, Construction, Conduction, Management And Ordinary And Extraordinary Maintenance Of The Energy, Construction And Structural Requalification Interventions Of The Buildings Included In The Proposal Named M7I1700135.