@cstross Except it's not the first EPR reactor. The first is Olkiluoto in Finland which is... overbudget and late. Expected cost €3 billion, acutal cost €11 billion. Completion date was supposed to be 2009, actual completion 2023.
In that time, LCOS for solar dropped by 83%, for wind by 65%. Even if storage doubles those costs (it doesn't), both are cheaper than nuclear.