Peak energy consumption happens in the evening, when solar isn't producing any energy. And nuclear costs just as much to run at partial capacity as it does to r

Peak energy consumption happens in the evening, when solar isn't producing any energy. And nuclear costs just as much to run at partial capacity as it does to run a full capacity. So if you build enough nuclear plants to support the grid when solar and wind isn't producing, then there's no reason to build any solar and wind. Nuclear makes the intermittent sources redundant.