08-07-2026, 11:27 PM
Returning to your question again, because I found it confusing:
> Is exact reconciliation between reported lump-sum investment cost and INVCOST only guaranteed under OBLONG=NO, or is there a different switch/reporting option that lets me keep the recommended OBLONG=YES formulation while still getting a lump-sum figure that ties out cleanly to INVCOST?
As far as I can tell, agreement between the reported LUMPINV lump-sum investment cost and NCAP_COST is guaranteed if you are neither using NCAP_ILED nor NCAP_DISC for the technology. If you use NCAP_ILED, then the IDC will be included both in the objective function and in the reported LUMPINV value. And if you use NCAP_DISC, also the risk premium is included both in the objective function and in the reported LUMPINV value(s) (optionally split in two values, the second being the risk premium). But if you use neither, you should be seeing that LUMPINV = NCAP_COST × INSTCAP, regardless of any OBLONG setting.
> Is exact reconciliation between reported lump-sum investment cost and INVCOST only guaranteed under OBLONG=NO, or is there a different switch/reporting option that lets me keep the recommended OBLONG=YES formulation while still getting a lump-sum figure that ties out cleanly to INVCOST?
As far as I can tell, agreement between the reported LUMPINV lump-sum investment cost and NCAP_COST is guaranteed if you are neither using NCAP_ILED nor NCAP_DISC for the technology. If you use NCAP_ILED, then the IDC will be included both in the objective function and in the reported LUMPINV value. And if you use NCAP_DISC, also the risk premium is included both in the objective function and in the reported LUMPINV value(s) (optionally split in two values, the second being the risk premium). But if you use neither, you should be seeing that LUMPINV = NCAP_COST × INSTCAP, regardless of any OBLONG setting.