Carbon Reduction Potential of Private Electric Vehicles: Synergistic Effects of Grid Carbon Intensity, Driving Intensity, and Vehicle Efficiency

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

What does it mean by “CEG” in abstract?

Give methodology adopted as flowchart.

How higher annual mileage of EV negate its carbon advantage?

What does min and max expression in eqn 4 indicate? Give its significance

why x values in divergent EV users is limited to 2? justify this

Does EV stock in figure 7 indicate number of Evs? Clarify this

How values in Figure 8, 9, 10 was obtained? They were estimated or taken in literature? If estimated give the formulas.

In Fig 11 carbon emission unit is missing. Correct it

please introduce about carbon pricing mechanism. How much carbon price do you recommend for for grid decarbonization prioritation?

Give some details by carbon tax and the recommended carbon tax.

Conclusion section must be revised by including quantitative results

 

Author Response

First of all, the authors would like to thank very much for the comments from the reviewer. After carefully studying the comments, we have made corresponding changes. Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

Comments and Suggestions for Authors

My comments are as below:

1. Why the LCA boundary, the authors does not include the potential waste output either from grid, power emssion or any involved process?

2. Fig 1: Why for charging losses only 3 process is considered? How about other than those 3 (charging, battery, and wheel)?

3. How did the authors differentiate different type of capacity EV and each corresponding emission into their calculation?

Author Response

First of all, the authors would like to thank very much for the comments from the reviewer. After carefully studying the comments, we have made corresponding changes. Please see the attachment.

Author Response File: Author Response.docx

Reviewer 3 Report

Comments and Suggestions for Authors

I believe the authors should discuss the environmental burdens associated with mineral extraction and battery production more broadly. The authors declare their interest in modifying the scope of the LCA for batteries in future studies (500-line and beyond). I believe this is a key issue in a fair environmental comparison impact of internal combustion engines versus electric. It may be as significant or even more as presented in the manuscript aspects of the exploitation of vehicles. 

Author Response

First of all, the authors would like to thank very much for the comments from the reviewer. After carefully studying the comments, we have made corresponding changes. Please see the attachment.

 

Author Response File: Author Response.docx

Round 2

Reviewer 1 Report

Comments and Suggestions for Authors

my comments have been addressed