How can I manually type in the emission factor that I've already known to OpenLCA? Not sure if I was doing it right.

Question

Dear openlca team,

Hi, I am not sure if I did it right. I have created a elementary flow first, and then I put the emission factor in "charaterization factor". And then I copied this piece to IPCC 2021 that I prefer to use.Is there any other way to do it? Because I have realized that when I calculating results after I finished the assessment, emission related to this emission factor did not show at the sankey diagram, which means even though it was calculated, there was no analysis to it.

Looking forward to you reply,

wang

Comments

Hi, I have the same problem. I want to use company-specific emission factors for electricity use. However, when I create an elementary flow, I cannot add an impact category nor the characterization factor. How did you do that?

Answer 1

Hi, I am not fully sure I understand your question, but if you have a new elementary flow to add to your system, then

1, check if this is really needed (and the database and method and impact category you plan to use does not already contain one that fits)

2, create the flow

3, add it to the impact category or categories you want, with the characterisation factor

4, add the flow to the processes where it fits.

Does this cover your question?

All the best,

Andreas

Comments

Thank you for the reply. Maybe the question was unclear. For example, my company owns a power plant, and we purchased coal to generate electricity for operation and manufacturing. When I evaluate the LCA for one of my product(Cradle to grave), I am supposed to evaluate the combustion of coal for electricity generation for one product, right? And the power plant can provide a specific emission factor of coal combustion based on daily operation data. And how can I add this to the LCA model? Should I follow the steps that you replied earlier?

Thank you again.

Wang

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I have kind of the same problem. I already know the emission factor for electricity on my country but couldn´t figure out yet how to add it into the LCA model. Have you already manage that problem? If so, how did you do it?

Thank you.

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Nah I am still struggling on this. Wondering if anyone else has the same problem. Could you please update here if you have any progress? Thank you.

Wang

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I might have done something. I have calculated an EF from scratch, but when running calculations I have no impact assessment but just a simple result that also turns to be negative. I don´t know if i made myself clear haha. Guess would be easier if I could show you some ss.