UC on CO2 growth

[OlivierD]

Hi,

I have put a constrain on CO2 emissions growth (in my case I would like the reduction not to be stronger than a certain limit - say 3.5% reduction per year for example) with some help from Antti (TIMES forum).

The UC works however it works on the reporting period growth (in my case I have 10 years reporting periods) not on the annual growth (as I was expecting with the use of UC_ATTR: GROWTH). Could someone help me and explain how to force the constrain on annual growth please?

Thank you,

Olivier.

Here is the constrain as in the model:

UC

Growth constraints CO2

~UC_Sets:R_E:GBL

~UC_T

UC_N

UC_ATTR

Pset_Set

Pset_PN

Pset_CI

Pset_CO

Cset_CN

Attribute

Year

LimType

UC_CLI~RHS~2010~LO

UC_CLI~LHS~2010~LO

UC_RHSRT~0~LO

UC_RHSRT~2020~LO

UC_RHSRT~2100~LO

UC_Desc

G_CO2

GROWTH

CO2-GTC

0.7

1

1

0

0

Limit on CO2 reduction per year

[Antti-L]

Dear Olivier,

It seems that you are not properly defining the constraint to be dynamic.  For it to be dynamic, you need to define either a valid UC_ATTR(reg,uc_n,side,component name,GROWTH), any UC_ATTR on the RHS side, or UC_T_SUCC. I can only see GROWTH under UC_ATTR, but you are neither defining the component name nor the side of the growth coefficients.

If your growth coefficients are to be on the RHS side, you should probably define UC_ATTR(GLB,G_CO2,RHS,CLI,GROWTH):

 

[OlivierD]

Dear Antti,

Thank you.

A further question related to the UC_ATTR:

is there a limit in the number of components you can define in one column UC_ATTR?

I tried defining 3 components in the column: UC_ATTR: RHS,CLI,GROWTH but it wasn't working and I notice that you are defining only 2 (CLI and GROWTH) in your example (putting the ~RHS after the UC_ATTR).

Best,

Olivier.

[Antti-L]

A further question related to the UC_ATTR:

is there a limit in the number of components you can define in one column UC_ATTR?

[OlivierD]

Anyway the UC constrain works now on annual and not reporting periods.

Thanks Antti.