I wonder can you help me figure out a user constraint for combining TOTN2O + TOTCH4 with TOTN2O in ETSAP-TIAM to give a CO2 equivalent commodity TOTCO2e of all three GHGs?
I have used scenarios with cumulative constraints of specified individually on CO2, N2O and CH4 (below).
However, I'd like the added flexibility of combining TOTCO2, TOTN2O, TOTCH4 using their warming potentials (1, 310, 25) and to get a TOTCO2 equivalent set "TOTCO2E". I've tried to figure how to do this creating new sets with COM-AGG. But I imagine there a more elegant way with a UC multiplier?
can you help me out with this? do you have any examples of any such constraint? or can you point me to a forum thread. (i've not been able to find any)
i was trying to make a co2 cap contraint based on this topic, but it seems it is not doing what i expect. The main difference is that it is not a cumulative constraint, it is a cap per period (only in 2030). It is getting unfeasible even when my cap is above emissions in the baseline and when it gets feasible (when i input a much higher cap value) it reduces emissions in first periods and brings them to zero from 2025. Could someone help me understanding it and making it right?
24-11-2015, 12:16 PM (This post was last modified: 24-11-2015, 12:17 PM by Antti-L.)
You are defining a bound for cumulative emissions (UC_RHS is used for cumulative constraints over regions). Use UC_RHST or UC_RHSRT instead, and it should work (UC_RHST is by period, over regions, UC_RHSRT is by period, by region).
I tried to implement a cumulative GHG contraint für the period 2020 to 2050 according to the example of James. However, the constraint did not cover the period but only the year 2020 (according to the DD-file), whereas in VFE the Year2 was set to 2050.
15-02-2018, 07:56 PM (This post was last modified: 15-02-2018, 08:32 PM by Antti-L.)
James' example shows illegal use of a year range for UC_COMNET. UC_COMNET accepts only single years (and UC_RHS does not accept any year indexes). If you want to use the UC_COMNET approach, you need to define the Period range by UC_Sets: as shown earlier in the thread:
UC_Sets:T_S: 2020,2100,0
Here, the final ",0" is an "interpolation" option, such that all periods between 2020 and 2100 are included.
Alternatively, you could set UC_Sets:T_S: empty, which means that all periods are included.
Alternatively, you could set UC_Sets:T_S: empty, and use UC_CUMCOM with an exact year range.
Alternatively (if it is a single emission commodity), you could use COM_CUMNET (with an exact year range) instead of a UC.
In all UC cases, T_EACH should normally also be defined empty: UC_Sets:T_E: