It’s much more expensive when considering lifetime costs, uranium will run out eventually, and because it can’t react quickly to changing demand it meshes horribly with renewables. If we can build an excess of renewables and pair them with storage solutions, what do we need nuclear for?
Spending more than 40 billion pounds over one and a half decades to build two energy storage flywheels that also produces radioactive waste is probably the most absurd undertaking conceivable to man.
But nuclear can’t pick up the slack quickly enough, that’s the problem.