This is absolute nonsense. Of course nuclear can power up and down. Who told you it couldn't? The fuel costs of nuclear are a tiny tiny portion of the operat

This is absolute nonsense. Of course nuclear can power up and down. Who told you it couldn't? The fuel costs of nuclear are a tiny tiny portion of the operating costs, so it's trivially easy to power on/off the reactor. Also, the long distance transport costs for electricity are massive - can be 30% loss. Look at HydroQuebec. They massively overproduce just to transport over HUGE long distance power towers because of the huge losses - and that's only 500 miles.