Hi,
I am trying to change the carbon content of an energy carrier (electricity in particular) over the different model years, but it is not working.
Any hints how I can do this?
Thanks
Your problem appears to be a VEDA issue, and not TIMES.
I believe the VEDA ~COMEMI table generates TIMES VDA_EMCB attribute instances, but it is possible that VEDA does not support year indexes in COMEMI tables.
But the TIMES VDA_EMCB parameter does have a year index:
VDA_EMCB(REG,ALLYEAR,COM,COM) – Combustion emission parameter
So, it should be easy to define year-specific values for it in TFM_INS / TFM_DINS tables. The first commodity is the source of emissions, and should be specified in CSet_CN. The second commodity is the emission commodity, and should be specified in Other_Indexes. That should give you all the info for using it. However, should you prefer to define it in a FI_T table, I think that would be equally easy. VDA_EMCB is automatically inter-/extrapolated by TIMES, and so no IE option should be needed.
(08-12-2024, 12:40 AM)Antti-L Wrote: [ -> ]Your problem appears to be a VEDA issue, and not TIMES.
I believe the VEDA ~COMEMI table generates TIMES VDA_EMCB attribute instances, but it is possible that VEDA does not support year indexes in COMEMI tables.
But the TIMES VDA_EMCB parameter does have a year index:
VDA_EMCB(REG,ALLYEAR,COM,COM) – Combustion emission parameter
So, it should be easy to define year-specific values for it in TFM_INS / TFM_DINS tables. The first commodity is the source of emissions, and should be specified in CSet_CN. The second commodity is the emission commodity, and should be specified in Other_Indexes. That should give you all the info for using it. However, should you prefer to define it in a FI_T table, I think that would be equally easy. VDA_EMCB is automatically inter-/extrapolated by TIMES, and so no IE option should be needed.
Do you mean with creating a scenario?
I tried, but it seems that the only value is assumed for the carbon content is the one I set in VT file (not specifying the year)
There seems to be some confusion between emission coefficients and emission bounds.
COMEMI is supported only for backward compatibility and it does not support the year index. VDA_EMCB is the recommended approach, as Antti suggested.
HOWEVER, if your model has the electricity sector too, and it is bounded as shown in your INS table, then I am not sure what you are trying to achieve by declaring the same bounds as emission coefficients.
Dear demar, as Amit pointed out, I meant to use
VDA_EMCB, not COM_BNDNET.
For an example, see the following:
https://forum.kanors-emr.org/showthread.php?tid=482&pid=6652#pid6652
I hope you can see the picture of the table there (
~FI_T: VDA_EMCB)?
But, if your model has the electricity sector too, then aggregating ELCCO2 into TRACO2 (like you had in your picture) might be prone to a double counting error.
Dear Akanudia and Antti-L
Thank you for your suggestions.
I am modeling the transport sector as a standalone system and therefore I want to change the emission coefficient over the time.
I cannot see the table of the old post, unfortunately. But would it work with just changing my ~COMEMI to ~FI_T? But do I keep then my ~COMEAGG?
Thanks
t
Ok, I attach that picture (~FI_T: VDA_EMCB) here, hope you see it now:
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attachment=189]