Author(s):	Mayer, D.; Heidenreich, M.
Organization:	Ecole des Mines de Paris, Centre d’Energétique, F-06904 Sophia Antipolis, France; Arsenal Research, Faradaygasse.3, A-1030 Vienna, Austria
Date of issue:	May 2003
Details:	4 pages: graphs, tables; with references
Type:	Paper IEA  PVPS Task 2
Presented at:	3rd World Conference on Photovoltaic Energy Conversion, 11-18 May 2003, Osaka, Japan
Download:	Open or download this paper as PDF file (111 KB)
Abstract:	The performance analysis of stand-alone PV systems (SAS) is not as straight forward as it is for grid-connected systems. A poor performance does not mean that the system encounters technical problems but can also be the consequence of a bad matching between the production and the load. Some coefficients have already been introduced within IEA  PVPS Task 2 to consider poor sizing and technical problems by complementing the performance ratio. This paper presents, through examples, different cases where the commonly used factors show their limits and highlight how some new coefficients, can better inform on the operational performance of stand-alone systems

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