My nuclear powerplant in UPS friendly.
I took my 1.1 GW (2*4 reactors) smart-powerplant blueprint and made it into a single huge entity (98x96).
The blueprint-string is in the .zip (and in the git repo -> homepage)
This entity costs all the ingredients the original construction would cost (unless I missed something; this is a WIP).
The wall is not in the BP and is just a visual indicator of this entity's borders - therefore not in the construction price.
It consumes 1 fuelcell every 25 sec: the original eats 8 every 200 sec at full power.
It pauses consumption, if not enought energy is used up - as the original would in a way.
(Currently not rotatable and the water-requirement at the offshore pumps is not checked either/doesnt work)