the optimal capacity structure for the reference case and for all four scenarios considered is showed in figure this effect has been observed in all four scenarios analysed and the effect becomes more and more significant with the renewable penetration level for example in the scenario represented in figure the introduction of gw of wind power displaces on the long run about gw of baseload nuclear capacity ie about of optimal capacity in the reference scenario it is interesting to note that gw of wind produces the same electricity as about gw of dispatchable baseload