Table 5 Contribution of each source to total forecast uncertainty.

From: Credible capacity evaluation of virtual power plants considering wind and PV uncertainties

Source of uncertainty

Contribution (%)

Variance (\(\hbox {kW}^2\))

Wind speed variability

48.6

27.4

PV irradiance variability

33.7

19.0

Load forecast deviation

17.7

10.0