Cerca nel sito per parola chiave

pubblicazioni - Presentazione

The integration of water and electric system in the small Mediterranean islands: an Italian case study

pubblicazioni - Presentazione

The integration of water and electric system in the small Mediterranean islands: an Italian case study

Presentazione delle analisi sui flussi energetici dell’isola italiana di Ustica ed esposizione di due approcci modellistici per migliorare la sostenibilità e l’efficienza del sistema idrico-energetico integrato dell’isola.

Water and energy supply in small Mediterranean islands are strictly interrelated and face a large number of challenging issues, mainly caused by the distance from the mainland, the lack of accessible and safe potable water sources, and the high seasonal variability of the water and energy demands driven by touristic fluxes. The energy system generally relies on carbon intensive, expensive stand-alone diesel generators, while potable water supply is provided by tank vessels or desalination plants. Although this combination provides essential services for local communities, it is often economically and environmentally unsustainable.

Here we focus on the Italian Ustica Island: first, we show a detailed analysis of the energy fluxes, comparing two different configurations of the water system (i.e., pre and post desalination plant connection to the electricity grid) and then we propose two different approaches to improve the sustainability and the efficiency of the integrated system. The first approach consists in coupling renewable energy sources with water supply technologies, in order to obtain efficient planning solutions in a least-cost fashion, using an implicit representation of the water system and a non-dynamic modelling of its operation.

The second approach relies on a dynamic water-energy nexus model, where planning options and the operation of both the nexus components are conjunctively optimized with respect to multiple economic and sustainability indicators.

Progetti

Commenti