Costruzione di una matrice di contabilità sociale allargata al settore energetico (ENERGY-SAM). Un'applicazione della procedura di disaggregazione di Wolsky alla SAM italiana per l'anno 2010

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(1)COSTRUZIONE DI UNA MATRICE DI CONTABILITÀ SOCIALE ALLARGATA AL SETTORE ENERGETICO (ENERGY-SAM). Un’applicazione della procedura di disaggregazione di Wolsky alla SAM italiana per l’anno 2010. MARCO RAO, UMBERTO CIORBA ENEA – Unità Centrale Studi e Strategie Sede Centrale, Roma GIOVANNI TROVATO, CARMELA NOTARO CEIS – Università degli Studi di Roma 2 “Tor Vergata” CATALDO FERRARESE OpenEcomics, CEIS – Università degli Studi di Roma 2 “Tor Vergata”. RT/2014/12/ENEA.

(2) AGENZIA NAZIONALE PER LE NUOVE TECNOLOGIE, LʼENERGIA E LO SVILUPPO ECONOMICO SOSTENIBILE. COSTRUZIONE DI UNA MATRICE DI CONTABILITÀ SOCIALE ALLARGATA AL SETTORE ENERGETICO (ENERGY-SAM) Un’applicazione della procedura di disaggregazione di Wolsky alla SAM italiana per l’anno 2010 MARCO RAO, UMBERTO CIORBA ENEA – Unità Centrale Studi e Strategie Sede Centrale, Roma GIOVANNI TROVATO, CARMELA NOTARO CEIS – Università degli Studi di Roma 2 “Tor Vergata” CATALDO FERRARESE OpenEcomics, CEIS – Università degli Studi di Roma 2 “Tor Vergata”. RT/2014/12/ENEA.

(3) Le attività descritte nel presente Rapporto Tecnico sono state realizzate dal Dr. Umberto Ciorba e dal Dr. Marco Rao, dellʼUnita Centrale Studi e Strategie ENEA, dal Prof. Giovanni Trovato, dalla Dr.ssa. Carmela Notaro e dal Dr. C. Ferrarese del CEIS dellʼUniversità di Roma “Tor Vergata” nellʼambito dello sviluppo di metodologie di supporto analisi congiunte energetico/economiche.. I Rapporti tecnici sono scaricabili in formato pdf dal sito web ENEA alla pagina http://www.enea.it/it/produzione-scientifica/rapporti-tecnici I contenuti tecnico-scientifici dei rapporti tecnici dell'ENEA rispecchiano l'opinione degli autori e non necessariamente quella dell'Agenzia. The technical and scientific contents of these reports express the opinion of the authors but not necessarily the opinion of ENEA..

(4) COSTRUZIONE DI UNA MATRICE DI CONTABILITÀ SOCIALE ALLARGATA AL SETTORE ENERGETICO (ENERGY-SAM) Un’applicazione della procedura di disaggregazione di Wolsky alla SAM italiana per l’anno 2010. M. RAO, U. CIORBA, G. TROVATO, C. NOTARO, C. FERRARESE. Riassunto Il presente lavoro descrive un’applicazione della matrice di contabilità sociale (SAM) italiana stimata dal CEIS dell’Università di Roma “Tor Vergata” all’analisi di impatto economico di politiche energetiche. Il lavoro descrive i risultati della disaggregazione della SAM del 2010 mediante una variante della procedura di Wolsky utilizzata per modellare con maggiore dettaglio il sistema energetico nazionale. Parole chiave: Matrice di contabilità sociale, procedura di Wolsky, impatto economico di politiche energetiche, Analisi Input-Output.. MAKING AN ENERGY-SAM FOR ITALY A Wolsky disaggregation variant of Italian Social Accounting Matrix for year 2010 Abstract This paper describes an application of the Italian Social Accounting Matrix (SAM) estimated by CEIS-University of Rome "Tor Vergata" to the analysis of the economic impact of energy policies. This work describes the results of the breakdown of the SAM for year 2010 using a variant of the Wolsky procedure used to model the national energy system. Key words: Social Accounting Matrix, Wolsky procedure, economic impact of energy policies, Input-Output Analysis..

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(30) La matrice di contabilità sociale riproduce le transazioni intercorrenti tra gli aggregati fondamentali che costituiscono un sistema economico; essa riproduce i conti relativi alla produzione, alla formazione del reddito e alla redistribuzione del reddito. Per presentare gli ultimi due conti in uno schema matriciale simile allo schema input-output sono stati inseriti ulteriori settori: i fattori della produzione (lavoro e capitale) e i cosiddetti settori istituzionali (famiglie, imprese e governo) ai quali i fattori della produzione distribuiscono i redditi percepiti. La matrice è quadrata (ha le stesse intestazioni per riga e colonna) ed è formata da una serie di sub matrici (il blocco in altro a sinistra nella figura è la matrice delle interdipendenze settoriali di Leontieff); per ogni aggregato il totale di riga è uguale al totale di colonna. Letta nel senso delle righe evidenzia le fonti di entrata di ciascuna istituzione o settore produttivo; letta nel senso delle colonne evidenzia come lo stesso aggregato impiega il reddito disponibile. Se a titolo di esempio analizziamo la riga relativa ai fattori della produzione, osserviamo che i fattori della produzione vengono remunerati per il loro contributo al processo di produzione dei beni e remunerati. Letta per colonna mostra come i redditi dei fattori vengono redistribuiti alle istituzioni (redditi da lavoro alle famiglie, redditi da capitale alle imprese, imposte al governo e profitti distribuiti ancora alle famiglie. Infine, analizzando le colonne relative alle istituzioni, vediamo come il reddito viene ripartito tra consumi risparmio e imposte alimentando la domanda finale di beni e servizi. Figura 1 – Schema di matrice di contabilità sociale USCITE ATTIVITA PRODUTTIVE FATTORI IMPRESE ATTIVITA PRODUTTIVE. Beni intermedi. FATTORI. Valore aggiunto Redditi da Capitale. IMPRESE ENTR ATE. FAMIGLIE. Redditi da lavoro. GOVERNO. Imposte indirette nette. RESTO DEL MONDO. Importazioni di beni intermedi. Rimesse all'estero. Produzione lorda. Reddito dei fattori. FORMAZIONE DI CAPITALE TOTALE. RESTO DEL MONDO. FORMAZIONE DI CAPITALE TOTALE Domanda Esportazioni Investimenti totale Reddito dei fattori Reddito Trasferimenti Profitti delle correnti dall'estero imprese Trasferimenti Reddito Profitti tra le Trasferimenti Rimesse delle distribuiti famiglie correnti dall'estero famiglie Imposte sulle Imposte sulle Imposte imprese persone totali Profitti Importazioni distribuiti di beni Acquisti di beni Importazioni all'estero dall'estero capitali all’estero totali Surplus di Flussi di parte capitale Risparmio Accantonamenti Risparmio corrente netti totale Reddito delle Reddito delle Spesa Esportazioni Investimenti imprese famiglie pubblica totali totali netti FAMIGLIE Consumi privati. GOVERNO Consumi pubblici. Fonte: http://www.bankpedia.org. Oltre a fornire un quadro contabile completo dei flussi che caratterizzano il sistema economico, la SAM è uno strumento di analisi economica. I flussi in essa riportati riproducono un sistema. 9.

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