Issue with UC on cum subsidies for period of years

[Antti-L]

As far as I know, modeling of feed-in tariffs can be quite tricky and I have not tried it myself. There is an old ETSAP report about it, written by the IER researchers, see: The explicit modelling of support systems for renewable electricity in TIMES. Note that the statement there about "SHAPE parameter could not be used in combination with the parameter FLO_SUB" is, however, not quite correct. TIMES has been supporting shaping of flow subsidies via FLO_FUNCX since around 2010.

There are also a few Forum threads about it, see e.g. FIT in TIMES.

Bear also in mind that whenever limiting subsidies for certain technologies, you will also be restricting the overall deployment of those technologies unless you make sure that the model allows investing to them also without subsidies (for example by adding non-subsidized process variants). Several users on this Forum have been confused about this.

[janis]

Thank you Antti for reply!
I look through IER report as well as another report from this series "The modelling of regulatory instruments and financial incentive measures in the buildings sector" and here I found something similar to my needs - somehow bound amount of subsidies not restricting the deployment of subsidased technologie. Actually it is similar approach what was mentioned in my previous post and I just tried it and it seems to work.

[janis]

Will be fixed in the next update.

I checked the cumulative constraints today and they work as intended!
Thanks!