No sane govt will allow a foreign power to literally be able to shutdown one of their cities on a whim.
I think what the Russian Govt realized is that instead of building nuclear power plants, its going to be more profitable to hold the electric grid of some country hostage, just like the hard profit they make holding Europe hostage with their gas pipelines.
EDIT:
There a lot more issues I have with their idea but that was the one most striking to me.
- How are going to supply electricity during a hurricane ? Most cites are located on the path to some hurricane / cyclone / tornado.
- Coastlines near cities are expensive real estate (not to mention anyone with property there allowing a literal power nuclear plant blocking their view ) - it takes important real estate from ports that are much more useful for docking ships, etc. Its possible to build a separate port far away from the city; but then you have to pay the extra cost of building some extra infrastructure to deal with the ship, at that point its just easier to build your own power plant.
- "Rosatom, in a statement, insisted its plant was 'invulnerable to tsunamis.'"
Really ?? why are they trying to sell dumb electricity when they have the much more valuable technology of invincible ships. How many tsunamis has one of their ships survived exactly ?