Nuclear does scale up and down very fast. Reference : https://hal-edf.archives-ouvertes.fr/hal-01977209/document https://hal-edf.archives-ouvertes.fr/hal-019772

Nuclear does scale up and down very fast. Reference : https://hal-edf.archives-ouvertes.fr/hal-01977209/document https://hal-edf.archives-ouvertes.fr/hal-01977209/document However because upfront construction cost is high, you want to use nuclear reactor as much as possible.