understanding LCOE calculation and financing

[JP]

Hi
I am trying to compare CSP and PV technologies, for the same peak
power. (as utility)
the principal way to that is by evaluation annual output and LCOE.
Referring to SAM manual I can see that LCOE calculation is done as:

sum [NPV( Energy*price)]
-------------------------
sum [NPV( Total energy)]

Lets say the present value of total incomes before taxes,... divided
by de present value of total energy produced.
From my point of view this is the LCOE to the consumer, but if there
is a profit, the LCOE defined as:

sum(NPV(costs))
----------------------
sum(NPV(energy))

there should be a difference between the incoming and the costs...


I don't understand that and I checked out the Nrel´s "manual for
economic evaluation...", could you say me what am I loosing or
pinpoint some reference to make it clear?