Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12779/7325
Title: Complete Data Inventory of a Geothermal Power Plant for Robust Cradle-to-Grave Life Cycle Assessment Results
Authors: Tosti, Lorenzo
Ferrara, Nicola 
Basosi, Riccardo 
Parisi, Maria Laura 
Keywords: geothermal energy; flash technology; Bagnore power plant; life cycle assessment; pedigree matrix
Issue Date: 2020
Project: None 
Journal: ENERGIES
Abstract: 
Technologies to produce electric energy from renewable geothermal source are gaining increasing attention, due to their ability to provide a stable output suitable for baseload production. Performing life cycle assessment (LCA) of geothermal systems has become essential to evaluate their environmental performance. However, so far, no documented nor reliable information has been made available for developing robust LCA studies. This work provides a comprehensive inventory of the Italian Bagnore geothermal power plants system. The inventory is based exclusively on primary data, accounting for every life cycle stage of the system. Data quality was assessed by means of a pedigree matrix. The calculated LCA results showed, with an overall low level of uncertainty (2–3%), that the commissioning and operational phases accounted for more than 95% of the environmental profile. Direct emissions to atmosphere were shown to be the major environmental impact, particularly those released during the operational phase (84%). The environmental performances comparison with the average Italian electricity mix showed that the balance is always in favor of geothermal energy production, except in the climate change impact category. The overall outcome confirms the importance, for flash technology employing fluid with a high concentration of gas content, of using good quality primary data to obtain robust results.
Description: 
214921
URI: http://hdl.handle.net/20.500.12779/7325
ISSN: 1996-1073
DOI: 10.3390/en13112839
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