Once again, SMRs. Quite cheap, easy to deploy and due to their modular design wont take a decade.

Nuclear has also advanced significantly in safety in that time, along with finding cheaper sources for the fuel and fuel recycling.

On top of that bleeding edge thorium reactors literally cannot have a run away reaction as they are designed with the ability to drain the fuel into a safety tank should a temperature threshhold be exceeded.

Reactors are also expensive these days due to constantly using bespoke one off designs, if you production line a reactor like the Souuth Koreans and French have done and what SMRs will also be able to do the initial capital cost looks far less horrifying.

And no I havent really noticed Tories pushing that narrative, in America its all about oil and outside of America they're generally far more open to a mixture of power sources.