For now at least, those plants are not operated or maintained by robots. You need employees and people to be there even if they are not generating any power, an

For now at least, those plants are not operated or maintained by robots. You need employees and people to be there even if they are not generating any power, and they need to be "warm" if they are to get online quick. The case examples in that link assume constant running. One could simply take the Fixed O&M times the effect and assume that (in combination with investment costs) to be the subsidies required to keep the plant in stand-by, through a constant operated plant is not the same as one that is standing by for most the time. None of the examples you linked has that kind of operation.