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Title: Benchmarking on improvement and site-adaptation techniques for modeled solar radiation datasets
Authors: Polo, Jesus
Fernández-Peruchena, Carlos
Salamalikis, Vasileios
Mazorra-Aguiar, Luis 
Turpin, Mathieu
Martín-Pomares, Luis
Kazantzidis, Andreas
Blanc, Philippe
Remund, Jan
UNESCO Clasification: 332201 Distribución de la energía
Keywords: Bankability Of Data For Solar Projects
Modeled Solar Radiation Data
Satellite-Derived Solar Radiation
Site Adaptation
Issue Date: 2020
Journal: Solar Energy 
Abstract: High-accuracy solar radiation data are needed in almost every solar energy project for bankability. Time series of solar irradiance components that spans decades can be supplied by satellite-derived irradiance or by reanalysis models, with very various types of uncertainty associated to the specific approaches taken and quality of boundary conditions information. In order to improve the reliability of these modeled datasets, comparison with ground measurements over a short period of time can be used for correcting some aspects, bias mainly, of the modeled data by using different methodologies; this procedure is known as site adaptation. Therefore, a benchmarking exercise that uses different site adaptation techniques was proposed within the Task 16 IEA-PVPS activities. In this work, over ten different site-adaptation techniques have been used for assessing the accuracy improvement, using ten different datasets covering both satellite-derived and reanalysis solar radiation data. The effectiveness of these methods is found not universal or spatially homogeneous, but in general, it can be stated that significant improvements can be achieved eventually in most sites and datasets.
ISSN: 0038-092X
DOI: 10.1016/j.solener.2020.03.040
Source: Solar Energy [ISSN 0038-092X], v. 201, p. 469-479
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