Data from over 260 PV systems have been analyzed and compiled onto an IEA
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> issue 14 > Last updated: 7 May 2003 |
Data from over 260 PV systems have been analyzed and compiled onto an IEA PVPS database.
A new report Analysis of Photovoltaic
Systems has been produced under IEA PVPS
Task 2. The study summarizes the operational performance, reliability and
costs of 266 PV systems installed in the 7 participating IEA member
countries (Austria, France, Germany, Israel, Italy, Japan and The Netherlands,
plus EU) as contained in the Task 2 database (see
PV Power issue 12).
Based on the experiences and lessons learnt from the sampled systems, the report sets out to identify how the performance of PV systems in general may be optimized. Detailed operational results for each of the systems are included, illustrated with graphical representations of key data. A normalization methodology has been adopted to allow performance analysis comparisons to be made between typical PV systems in different countries under different climatic conditions and different load patterns.
The results include; an analysis of the annual yields, which show only slight fluctuation from one year to the next; annual performance ratios, which differ from plant to plant, but range between 0,25 and 0,9 with an average of 0,66; and analysis of loss factors.
Potential optimization measures identified in the report include: avoiding diode, wiring and mismatch losses; improving efficiencies of components through the selection of high efficiency modules and inverters; and avoiding high module temperatures by integrating modules into the building during installation.
The report also describes the project background data sources and the use of the database, and gives an overview of the evaluation procedures developed to enable system comparisons.
Copies of the report IEA PVPS T2-01:2000, priced at USD 75, are available from the Task 2 Operating Agent, or can be downloaded:
Contact:
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