User variables

[JP]

Hi all:

I would like to make a optimization of a parameter defined by me, lets
say:

(Total investion + Expenses in first year)/Energy generated

So the optimization of this parameter its based on output variables.
My idea is to define the variable like an user variable, and then make
the optim.
but how do i define that variable?

thanks all!
JP

[Paul Gilman]

Dear JP,

The LCOE metric in SAM is a measure of the total cost of the system as
a function of the electricity it generates, so you could use it for
your optimization. What kind of system are you modeling? What input
variable are you interested in optimizing?

SAM's parametric simulation option makes it possible to assign a range
of values to most input variables. You can read about how to set up a
parametric analysis in Help, under Advanced Topics.

The user variables store values for use with the Excel Exchange
feature. I am not sure they would be useful for your optimization
exercise.

Best regards,
Paul.

[JP]

Dear Paul:

thanks for your reply.

The LCOE metric in SAM is a measure of the total cost of the system
as

a function of the electricity it generates, "and the price its sold".
Am I right?

I understand LCOE as the cost of energy per megawatt, to the
producer,in other words, the amount of money you need to sell the
energy in order to cover expenses (Operation and financial) and have a
NPV = 0.

the LCOE SAM calculates produces NPV non equal to zero. So it would be
the LCOE "for the grid"

Might be that I would be loosing something, anyway, it is not possible
to optimize a user variable, right?

Thanks, and best regards




On Sep 19, 7:08 pm, Paul Gilman <solar.advisor.supp...@nrel.gov>
wrote: