Questions about EV exchanges and GCAM scenario support

[AKomatsu999]

Hi,

I am using premise v2.4.4 or v2.4.7, and have a couple of questions.

1. Internal combustion engine exchange in EV/FCEV datasets
   When premise creates regionalized electric vehicle datasets, I noticed that the technosphere exchanges include an input for an internal combustion engine.
   I observed the same behavior for fuel cell vehicle datasets.
   Could you clarify whether this is an intended modeling assumption? If so, what does this exchange represent?

2. GCAM scenarios
   The premise scenario explorer does not appear to provide GCAM scenarios for premise v2.4.4.
   Actually, I was unable to run GCAM scenarios: downloading csv files failed, and when using locally downloaded CSV files, the update process failed during GIS matching.
   However, the release notes for v2.4.7 mention several improvements related to GCAM.
   I was wondering whether there are any publicly available GCAM scenario files compatible with premise v2.4.7, or whether the recent GCAM-related updates are primarily intended to support user-provided/custom GCAM outputs.

[romainsacchi]

Hi @AKomatsu999

1. Yes, it is because there is no proxy dataset to represent the powertrain of BEVs; hence, a per-kg internal combustion engine dataset was used to represent that. It is not meant to represent an actual combustion engine.
2. Right. We used to have GCAM scenarios, but found issues with them and asked the NRL to correct those. They are almost done, and I expect them to be available in a couple of months.

[AKomatsu999]

Thank you very much for your prompt response. It helped me understand the issue perfectly.
I look forward to being able to use the GCAM scenarios again.