IEA-ETSAP Forum
"Decayr" attribute - Printable Version

+- IEA-ETSAP Forum (https://iea-etsap.org/forum)
+-- Forum: Model Generators (https://iea-etsap.org/forum/forumdisplay.php?fid=2)
+--- Forum: TIMES (https://iea-etsap.org/forum/forumdisplay.php?fid=8)
+--- Thread: "Decayr" attribute (/showthread.php?tid=134)



"Decayr" attribute - AkramS - 05-04-2019

Hi, The results of our model shows fast changes in investments in new technologies over the model's time period. We wonder if there is a method to slow down these changes. Could we use the "Decayr" attribute. If yes, how could this attribute be used? Best regards, AkramS


RE: "Decayr" attribute - Antti-L - 06-04-2019

There is no "Decayr" attribute in the ETSAP TIMES model generator.  Are you referring to some other modelling system? If using TIMES, you could use the technology-specific dynamic constraints for bounding the increase/decrease in capacity/activity, and with the general TIMES user constraints you can formulate almost any kinds of constraints for any sets of technologies, including dynamic constraints limiting the increase/decrease in activities, capacities, flows, and investment costs between periods. Please see the documentation: Part II: Comprehensive Reference Manual   – Section 6.3.39 for technology-specific dynamic bounds on growth/decay   – Section 6.4  for general User Constraints