Journal
SOLAR ENERGY
Volume 83, Issue 9, Pages 1434-1445Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2009.03.012
Keywords
Life cycle assessment; Stand-alone photovoltaic system; Energy pay-back time; CO2 emission factor
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Funding
- HOPE [CSD2007-00007]
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The energetic and environmental life cycle assessment of a 4.2 kW(p) stand-alone photovoltaic system (SAPV) at the University of Murcia (south-east of Spain) is presented. PV modules and batteries are the energetically and environmentally most expensive elements. The energy pay-back time was found to be 9.08 years and the specific CO2 emissions was calculated as 131 g/kWh. The SAPV system has been environmentally compared with other supply options (diesel generator and Spanish grid) showing lower impacts in both cases. The results show the CO2-emission reduction potential of SAPV systems in southern European countries and point out the critical environmental issues in these systems. (C) 2009 Elsevier Ltd. All rights reserved.
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