CI Estimations for Natural Gas Generation via Anaerobic Digestion

Hi All,

I am trying to look into how different process parameters impact the Carbon Intensity (CI) value determined by GHGenius for the generation of natural gas of pipeline injection via anaerobic digestion.

Before I started changing any parameters I wanted to ensure I am setting up GHGenius correctly and reading the correct values for natural gas derived by Anaerobic Digestion (AD).I thought a reasonable place to start would be to try and recreate the cases shown in the Day 2 Presentation from the GHGenius Workshops  (www.ghgenius.ca/index.php/all-news/76-bc...s-ghgenius-workshops), Slides 19 & 22. However, when I enter the values in the corresponding cells as per the workshop I do not get the same results. Please see the images below.

My questions are :

Am I reading from the right cells on the BC LCFS output tab ?

Has the model undergone any changes to cause this discrepancy between the values I am reporting and the workshops or have I made an error when replicating the inputs ?

Any help would be appreciated.

FYI The first image is the Organic Waste example from the workshop and the Second Image is the Manure example from the workshop.

Many thanks in advance, 

Tomas

Sorry it appears the images have not pasted correctly. I have now uploaded them as attachments.   

 

 

I hope this has now worked correctly. 

 

Hi Don, 

Thank you for your help here, I see my mistake now. I have implemented the change but still have a discrepancy between my results and the GHGenius workshop values, please see below in the feedstock transport category. 

Sorry to ask for help again but I am struggling to get this to match the workshop value of 795.

Best Regards,
Tom

 

 

No problem at all. Thanks for you help again.

I have a further question surrounding the Carbon Intensity attributed to imported electricity, can the Carbon Intensity attributed to the electricity bought be altered/ defined ?, for example if the electricity bought has a guaranteed renewable origin making the Carbon Intensity of the electricity lower than the typical electricity available in the grid.

Could you please direct me to the cell to change this if this is possible.

Best Regards,
Tom