The optimal capacity structure for the reference case and for all four scenarios considered is showed in Figure 4.15. 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 4.14 the introduction of 78 GW of wind power displaces, on the long run, about 19 GW of baseload nuclear capacity, i.e. about 40% of optimal capacity in the reference scenario. It is interesting to note that 78 GW of wind produces the same electricity as about 16.2 GW of dispatchable baseload.