"The Character of
Power Output from Utility-Scale Photovoltaic Systems"
Aimee E. Curtright and Jay Apt
Power produced by utility-scale solar photovoltaic (PV) systems has
fluctuations on both short and long timescales. Power spectral density
analysis provides information on the character of these power
fluctuations. Examination of the correlation and step size of the power
output between several PV sites within a multi-site system allows
assessment of geographic diversification for addressing intermittency.
Both techniques provide insight into the characteristics of required firm
power and / or demand response required to accommodate large-scale PV
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