THE CENTRALITY OF ENERGY RETROFITTING IN THE HISTORICAL CITY AS A CHALLENGE FOR THE IMMEDIATE FUTURE. THE ROLE OF THE REPRESENTATION AS INSTRUMENT FOR CONTROL AND EVALUATION OF THE PROCESSES OF TRANSFORMATION; CASE STUDY FOR A SUSTAINABLE REGENERATION

In the range of the no-solved dichotomy between conservation and innovation, the thematic of regeneration of the historical cities can be located, in Europe as in other parts of the world, in functional and energetical terms. In an age during the which the social practice evolution becomes more and more united with the daily utilization of technology, once used exclusively by elite circles –scientific and professional community- the historical city, harbinger of a cultural, sociologic, iconographic and mnemonic heritage, ancestrally rooted in the conscience of civilization, addresses the complex path of the research of an equilibrium between the own essence and the new modernity needs. From the middle of the last century, the physical and social deterioration that for various reasons cause has influenced many urban areas, has expanded to a new suffering that showed a further condition of inadequacy of the public sphere. Individual buildings or entire urban and real prori pieces of city, have begun to deal with a new one (in terms of perception) and postponed requirement, established by the need to embark on a path towards a logic of sustainability in terms of functionality and energy. This path is not easy, especially in the pleasant setting of balance formal and architettonico in Italy and in Europe, recognized as a historical city; infact this path cannot be abstracted by the clear definition, from a verse, of the extraordinariness of historical heritage and, from an other verse, by just as important identification of imposed -or deriving from a contemporary historical place- needs, functions, conditions system. This contribution therefore aims to highlight the main procedural issues, planning and management authority relating to regeneration in the historic city, through the reading of an urban environment taken as an example, where specific and relevant formal features.