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.
%0 Conference Paper
%1 Suri.Huld.ea2007
%A Súri, M.
%A Huld, T.
%A Dunlop, E. D.
%A Albuisson, M.
%A Lefevre, M.
%A Wald, L.
%B 22nd European Photovoltaic Solar Energy Conference
%D 2007
%K HelioClim, PV PVGIS, interannual prediction, radiation solar variability, yield
%T Uncertainties in photovoltaic electricity yield prediction from fluctuation
of solar radiation
%X 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.
@inproceedings{Suri.Huld.ea2007,
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.},
added-at = {2011-09-01T13:26:03.000+0200},
author = {Súri, M. and Huld, T. and Dunlop, E. D. and Albuisson, M. and Lefevre, M. and Wald, L.},
biburl = {https://www.bibsonomy.org/bibtex/297e985a69acd4cf2e4d8005c93beaea8/procomun},
booktitle = {22nd European Photovoltaic Solar Energy Conference},
file = {Suri.Huld.ea2007.pdf:Suri.Huld.ea2007.pdf:PDF},
interhash = {e596c07cfa461233cf156e261c0ecab7},
intrahash = {97e985a69acd4cf2e4d8005c93beaea8},
keywords = {HelioClim, PV PVGIS, interannual prediction, radiation solar variability, yield},
owner = {oscar},
refid = {Súri.Huld.ea2007},
timestamp = {2011-09-02T08:25:25.000+0200},
title = {Uncertainties in photovoltaic electricity yield prediction from fluctuation
of solar radiation},
year = 2007
}