The continuous demand in energy consumption and relative depletion of
fossil fuel reserves has increased the use of renewable energy resources. However,
these resources are characterized by their intermittent nature, and hence the uncertainty
of these resources has gained importance in analysis and calculation. Traditionally,
uncertainty has been dealt with using probabilistic and possibilistic methods, but the
probability density function (PDF) method is used when historical data is not properly
available. Also, a hybrid of these methods is often used. This chapter provides a brief
introduction of various probabilistic and possibilistic methods used for uncertainty
analysis in solar and wind energy generation systems. A comparison of various
methods used for this purpose has been given in the chapter, which may help choose
the best method for a given condition.
Keywords: Renewable Energy Sources, Uncertainty, Analysis of Uncertainty Methods.
