Dear Paul
By “main transform losses” I mean the efficiency of the main transformer (sorry, I wanted to say “main transformer losses”).
I assume that the gross electric output is the energy generated by the power cycle. Then, we have to consider the parasitic losses you mention, and finally, before connecting the energy into the grid, the electricity must be converted from low voltage to high voltage by means of a transformer. This transformer has an efficiency that reduces the energy we connected to the grid (the net electric output).
My doubt is: is this transformer considered? If so, how it is represented its efficiency?
Best regards