constraint on emission for a power plant

[Samaneh]

Hello,

I tested a few ways to set a constraint on MWh electricity generation from a coal power plant, but none of them worked. I have a separate process (SECSTMBL) to account for CO2 emission from a coal plant (ECOALSTM). I have an upper bound constraint (1000 lb CO2/ MWh electricity produced by the coal plant). So, the equation would be:

CO2 emission from SECSTMBL (lb) / electricity generation from ECOALSTM (MWh) <= 1000

or

CO2 emission from SECSTMBL (lb) <= 1000 * electricity generation from ECOALSTM (MWh)

If I convert it to the equation in TIMES, it would be:

1*VAR_FLO (SECSTMBL, CO2) <= 1000 * VAR_ACT (ECOALSTM)

I think I need to use UC_ATTR(type,SYNC) to activate both right and left sides of the equation, but I don't know the type?

~UC_Sets: R_E: Reg1
~UC_Sets: T_E:						~UC_T
UC_N	Pset_PN	Pset_CO	UC_ATTR~LHS	UC_ATTR~RHS	Year	LimType	UC_ACT~RHS	UC_FLO~LHS	UC_RHSRTS~REG1	UC_RHSRTS~0
UC_test	SECSTMBL	ELCCO2	FLO	ACT	2015	UP	1000		0	1
	ECOALSTM	ELC		SYNC				1

Thank you so much for your help,

Samaneh

 

[AKanudia]

First, I would like to understand the situation a bit: what options does process ECOALSTM have to reduce its emission intensity? Is it a multi-fuel process?

[Samaneh]

Hi,

Yes, the coal steam power plant (ECOALSTM) is a multi-fuel process. There are some other processes before ECOALSTM that capture CO2 emissions (SECSTMCC) and accounts for CO2 emissions (SECSTMBL) based on the coal type. The output of these processes goes into the ECOALSTM as fuel input and produces electricity. So, the problem is the CO2 emission from ECOALSTM plant is not the output commodity from ECOALSTM and I have to look to CO2 produced by other processes such as SECSTMBL to figure out the CO2 emission from ECOALSTM. The only commodity out from ECOALSTM is electricity.

Hope the explanation was helpful,

Thanks,

Samaneh

[AKanudia]

try this:

You can drop the last column if you want this constraint only in 2015