There are ways of dealing with this, but they’re far less ideal than simply having big spinning turbines with large mass and inertia - even if the voltage or frequency of the system changes, the turbine still spins.

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.

When one type of generation is suffering for whatever reason, the other types can pick up the slack.

But nuclear can't pick up the slack quickly enough, that's the problem.