I was advised by e-mail from a player who has checked, that nuclear plants really do give 150% bonus, but require fresh water, not just any water.
The water part makes sense, I've never heard of a nuc plant that uses salt water.
The 150% part seems strange. Nuclear is a very powerful source of energy, but why give just one of the plants this big bonus and make all the others 50%? Either there should be a real hierarchy, or they should all be the same, IMHO. Not just one that's different.
I think they should also model the polution effect of Nuclear differently. It should generate no extra polution in the polution box, since it is an emission free technology. But, you should have to designate one square in the city radius as the disposal area for the spent fuel. You would just drop a little radiation icon on that square in the city view, like you drop a one citizen on the square and get the food/shields/commerce icons. The thing is, on the square with the radiation icon, you can generate no food, shields or commerce.
Probably never happen, but I think it would be a nice touch.
--LW