27-02-2023, 07:22 AM

We're trying to understand the components of the objective function, along the lines of a few previous forum posts including:

Linking the TIMES undiscounted cost outputs to the objective function (iea-etsap.org)

Using the switches $SET OBLONG YES and $SET ANNCOST LEV things are adding up nicely in a test model. In particular, all of the following add up to ObjZ:

* Discounted sums of Cost_Inv, Cost_Fom, and Cost_Flo

* Sums of Cost_NPV

* Discounted sums of Reg_ACost

The one thing that doesn't seem to fit with the manual (Part 2) is that the salvage value doesn't seem to be included in the objective function reported.

Are we missing something, or is this just the way ObjZ is reported?

Linking the TIMES undiscounted cost outputs to the objective function (iea-etsap.org)

Using the switches $SET OBLONG YES and $SET ANNCOST LEV things are adding up nicely in a test model. In particular, all of the following add up to ObjZ:

* Discounted sums of Cost_Inv, Cost_Fom, and Cost_Flo

* Sums of Cost_NPV

* Discounted sums of Reg_ACost

The one thing that doesn't seem to fit with the manual (Part 2) is that the salvage value doesn't seem to be included in the objective function reported.

Are we missing something, or is this just the way ObjZ is reported?