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Hello,
In my model, time period is 2015-2016, and the life for technology is 30 years from 2015. When I run the model, the results show that there is no existing technology in 2030, only the new technology. In my opinion, existing technology should exist from 2015-2045. Could you please tell me how to correct?
Thank you very much
Zhi Guo
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25-12-2020, 09:24 PM
(This post was last modified: 25-12-2020, 09:37 PM by Antti-L.
Edit Reason: typo
)
Defining NCAP_TLIFE=30 is not sufficient for determining whether an existing capacity is still available in 2030. Consider, for example 1) a plant that was commissioned in 1990, and 2) a plant commissioned in 2000. According to NCAP_TLIFE=30 neither of these should any longer have capacity in 2030. However, you seem to expect that any capacity C existing in 2015 for a technology p having NCAP_TLIFE=30 should exist over 2015–2045, i.e. should stay constant for 31 years. If that is indeed what you want, that can be easily accomplished by defining NCAP_TLIFE(r,2015,p)=31 and NCAP_PASTI(r,2015,p)=C.
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(25-12-2020, 09:24 PM)Antti-L Wrote: Defining NCAP_TLIFE=30 is not sufficient for determining whether an existing capacity is still available in 2030. Consider, for example 1) a plant that was commissioned in 1990, and 2) a plant commissioned in 2000. According to NCAP_TLIFE=30 neither of these should any longer have capacity in 2030. However, you seem to expect that any capacity C existing in 2015 for a technology p having NCAP_TLIFE=30 should exist over 2015–2045, i.e. should stay constant for 31 years. If that is indeed what you want, that can be easily accomplished by defining NCAP_TLIFE(r,2015,p)=31 and NCAP_PASTI(r,2015,p)=C.
Dear Antti-L,
Thank you for your reply, I need to try as you suggested. I have another question: the objective function is to minimize the net present cost. In my model, if there are 10 process for power, their cost must be different. In my opinion, it will occurs “winner-take all" for choosing the cheapest process. If we limit the capacity or activity for the cheapest process, does it intervene the model?
Thank you very much
Zhi Guo
