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Conference papers
Uncertainties in solar electricity yield prediction from fluctuation of solar radiation
Abstract : We have analyzed the variability of solar radiation in the Mediterranean and Black Sea regions by comparing yearly and monthly averages to long-term average values calculated from the HelioClim-1 database. Daily sums of global horizontal irradiation are considered for 18 years in the period 1985-2004. Standard deviation of yearly sums of global horizontal irradiation shows low interannual variability, being mostly in the range of 4% to 6%. While in arid climate of Northern Africa, Middle East, and Southern Europe standard deviation goes below 4%, values up to 10% are identified along coasts and in mountains. In the least sunny year out of 18, the solar resource was generally never more than 9% below the long-term average, and only in a few regions the radiation deficit reached 15%. The most stable weather is found in summer with standard deviation in June below 12%. The least stable season is winter, with variability higher then 20% in December, and regionally going above 35%. The solar resource has distinctive time and geographical patterns that might affect financing of large photovoltaic systems, as well as management of the distributed electricity generation.
Cited literature [2 references]
https://hal-mines-paristech.archives-ouvertes.fr/hal-00468620
Contributor : Lucien Wald <>
Submitted on : Wednesday, March 31, 2010 - 11:22:12 AM
Last modification on : Thursday, September 24, 2020 - 5:22:04 PM
Long-term archiving on: : Thursday, July 1, 2010 - 8:54:25 PM
Contributor : Lucien Wald <>
Submitted on : Wednesday, March 31, 2010 - 11:22:12 AM
Last modification on : Thursday, September 24, 2020 - 5:22:04 PM
Long-term archiving on: : Thursday, July 1, 2010 - 8:54:25 PM
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