Re: Nuke
HINT: You conveniently overlooked geological surveys, safety certification, testing, licensing and the icky problems of a viable plan for decommissioning. All of which will take years or even decades. Not to mention NIMBYism. Who'd want a mini nuclear power station in their neighbourhood?
To the best of my knowledge, none of the UK's sub-based reactors have been decommissioned because nobody's figured out how to do that. It might be a good idea to know how to do that before relying on whatever vapourware bullshit Rolls Royce is hyping.
https://publications.parliament.uk/pa/cm201719/cmselect/cmpubacc/2041/2041.pdf