optional plant life extension

[olugovoy]

Hi there,

I'm trying NCAP_OLIFE option (http://www.iea-etsap.org/docs/TIMES-Early-Retirement-of-Capacity.pdf). How it works exactly?

Should it be used along with "LIFE" (NCAP_TLIFE) or instead?

Stock~WEU	Stock~ROW	LIFE	NCAP_OLIFE
5.00	5.00	30.00	60.00
5.00	5.00	30.00	60.00

Or NCAP_TLIFE should be lower than LIFE? I tried both, but it doesn't seem to work.

Thanks

[Antti-L]

NCAP_OLIFE specifies the maximum full load operating lifetime of process. The parameter is only taken into account if early retirements have been allowed for the process. Therefore, you should define either PRC_RCAP(r,p) or some RCAP_BND(r,y,p,lim) for the process (in VEDA-FE the latter can be used for activating early retirements). Because a process with NCAP_TLIFE=N can never operate in full load longer than N years (unless the availability factor is >1), the maximum operating life will  have no effect if it is longer than NCAP_TLIFE (unless the availability factor is >1). In other words, "full load" is assumed to correspond to an utilization factor of 1, and the amount of full load operating years thus corresponds to the cumulative production divided by (capacity*PRC_CAPACT).

Moreover, the whole "operating life" concept is unambiguous and thus well-defined only for vintaged processes. Therefore, to use NCAP_OLIFE you should also define the process vintaged.

I hope these clarifications can help making it work for you.

[vangelis]

Hi,

Is it possible to provide an example of how to introduce early retirement in VEDA-FE using either PRC_RCAP or RCAP_BND?

My purpose is to enable the model to retire existing capacity with high O&M costs prior to its lifetime.

In which reported variable in VEDA-BE can I observe the retirements?

Thanks

Vangelis

[Antti-L]

I don't have a VEDA-FE example at hand, but early retirements for process p can be simply activated by specifying any RCAP_BND(r,y,p,lim), for any year y. If you don't want to set bounds for the retirements, you can specify RCAP_BND (r,y,p,'N')=0, which will have no bound effect.

The retirements are reported as a negative component in the VAR_Cap reporting parameter, with the special vintage symbol ¤.

[vangelis]

Thank you very much Antti for the help ! !

It worked ! !