What is the difference between the Supply Chain Factors and the published USEEIO model results?

[MoLi7]

It looks like they present similar results.

[MoLi7]

There are two major differences between the two datasets:

1. The Supply Chain Factors are in purchaser price, whereas the published USEEIO model results are in producer price.
2. The Supply Chain Factors do not convert major GHGs (i.e. CO2, CH4, N2O) into CO2e, whereas the published USEEIO model results report all GHGs in CO2e.

[MoLi7]

Hi @Brian-Solomon, you are correct that USEEIO models only provide SEFs, as their results are in producer price. AR5 was the GWP values used in USEEIO v2 models.

[mksheridan]

Was AR4 or AR5 used in the USEEIO v1.1 model (https://catalog.data.gov/dataset/useeio-v1-1-matrices)?

[bl-young]

AR4 was used in v1.1 and is still used in the latest release.

[mksheridan]

Thank you! To confirm was AR4 or AR5 used in USEEIO v2.0.1-411 (https://catalog.data.gov/dataset/useeio-v2-0-1-411)?

[bl-young]

From EPA's TRACI, so AR4

[gsdipietro]

[bl-young]

Would you mind posting this as a new discussion item as it likely has value to others?

[WesIngwersen]

The major differences are:

1. The Supply Chain Factors are in purchaser price, whereas raw values for GHGs/$ commodity in a USEEIO > v2 model $N$ matrix are in producer price
2. The Supply Chain Factors with Margins add on the GHGs of transportation, wholesaling and retailing. Results with margins can be calculates with a USEEIO model but are not given in published matrices.

One note - in Supply Chain Factor versions before v1.2, there were also no CO2e values given in the Supply Chain Factors, which was another difference with USEEIO models. This is no longer the case.