Emissions on storage output

[F.Rehulka]

Hello everyone,

I am encountering some difficulties with the association of an emission to a storage process output (STGTSS), and would need some help.

I initially tried to use the FLO_EMIS attribute to link the emissions to the process output but it did not work (no emissions whereas the ouput is >0).

So I tried the ENVACT attribute, which links the emissions to the activity of the process, but apparently the activity of a storage process is the amount of energy that is stored and not the charging/discharging flows.

 

Is FLO_EMIS supposed to work with a STGTSS process ?

 

Also, ideally, I would like to have a storage process that has different commodities as input and output. The night storage process (STGNTS) allows it but requires to fix some charging timeslices, that I do not want to fix.

 

Is there a way to have a timeslice storage process with different commodities as input and output ?

 

Thank you in advance

[Antti-L]

In general, FLO_EMIS can be used only for normal processes (i.e. for not IRE or STG).

However, as a special case you can define a FLO_EMIS on the activity even for IRE and STG processes. And in VEDA, the shortcut for doing that is to use ENV_ACT, as you noted.

For defining other auxiliary commodity flows for storage porcesses, see the documentation:

http://www.iea-etsap.org/docs/TIMES-3.1-Information-Note.pdf (page 9).

In order to define the input and output of a timeslice storage to be two different commodities, you should just define the input and output commodities in the process topology, and set the PG of the process to be a commodity group consisting of both the input and output commodity.  For example, if both of these commodities are of type NRG, and the process does not have any auxiliary NRG inputs/outputs, you can simply set the PG as "NRG".

[F.Rehulka]

I created a commodity group for both the input and the output and it worked. With this configuration I can handle the emission more precisely on another process consuming the output of the storage process.

Thank you very much !