La normativa italiana per gli impianti idroelettrici

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di Enzo de Lucia

Il contesto normativo per il mini idroelettrico è molto frammentato, poiché le regole sulla compatibilità delle opere con il rispetto dell’ambiente, le concessioni per l’uso dell’acqua, l’allacciamento alla rete e l’ottenimento delle autorizzazioni necessarie differiscono da regione a regione. Il riferimento legislativo all’utilizzo delle acque in Italia è la direttiva 2000/60/CE (Direttiva Quadro sulle Acque) che sottolinea la necessità di gestire questa risorsa attraverso una pianificazione a livello di bacino idrografico, secondo un’ottica ecologica che consideri il ciclo delle acque e non i confini amministrativi di province, regioni o stati. L’ottenimento della concessione di derivazione d’acqua pubblica ad uso idroelettrico costituisce il fattore più critico e talvolta limitante nell’avviamento di una centrale mini idroelettrica (i tempi necessari al suo ottenimento sono molto lunghi e l’esito delle domande è incerto), nonostante per i piccoli impianti sia previsto dalle linee guida nazionali (Dm 10 settembre 2010) un iter autorizzativo semplificato. Un vantaggio importante per gli impianti di piccola taglia è stato introdotto dal decreto legge del 18 ottobre 2012 n. 179, che ha previsto l’esenzione, per gli impianti idroelettrici al di sotto dei 100 o 250 kW (a seconda della tipologia), dall’obbligo di presentare la valutazione di impatto ambientale, considerando i piccoli impianti ipso facto sostenibili dal punto di vista ambientale.

fonte: UniCredit, "Rapporto infrastrutture", dicembre 2013



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