Baseload nuclear plants have de facto been replaced by both renewable energy as well as medium- and peak-load providers. In all scenarios analysed, however, the introduction of renewable energy is accompanied by an increase of the capacity of both peak- and medium-load plants in the optimal generating mix. Those phenomena are more pronounced at higher penetration levels. For instance, the introduction of a low marginal cost technology would displace baseload technology exactly on a one-to-one basis.