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Sustainability
Volume 13
Issue 22
10.3390/su132212423
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Article
Peer-Review Record

Low-Carbon Economic Dispatch Based on a CCPP-P2G Virtual Power Plant Considering Carbon Trading and Green Certificates

Sustainability 2021, 13(22), 12423; https://doi.org/10.3390/su132212423
by Qingyou Yan 1,2, Xingbei Ai 1,2,* and Jinmeng Li 1,2
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Sustainability 2021, 13(22), 12423; https://doi.org/10.3390/su132212423
Submission received: 15 October 2021 / Revised: 31 October 2021 / Accepted: 8 November 2021 / Published: 10 November 2021

Round 1

Reviewer 1 Report

After analyzing the content of the article, I have questions that I would like the authors to comment on and possibly supplement their answers in the conclusion:

  1. As you can see from Figure 4, the authors built the CCPP-P2G model, in which there are two types of RES sources. First, the curves of the operation of these sources are different and result from the current weather conditions. Secondly, the installed capacities of these sources are different (as can be seen in Figure 4). And here the question arises whether we could expect other (perhaps better) analysis results if these powers were comparable.
  2. Could the model be extended with additional optimization criteria determining the optimal power of RES sources in order to maximize the VPP profits adjusted to a given emitter?

These are important questions from the point of view of the global comprehensive reduction of CO2 emissions and the simultaneous development of RES and shaping the load curve of the power system (limiting load peaks in the system).

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Reviewer 2 Report

The topic of combined power generation is relevant and meets the scope of the journal. Authors propose original approach to model activity of CCPP+PV+WP with adding P2G technology and CO2 storage. In general, it could be of interest to the readers.

Despite this, i have some comments and questions, which should be considered before the final decision:

  1. Nomenclature is required. It is difficults to compare tables 1 and 2 with equations.
  2. What is proposed to do with produced methane?
  3. It is necessary to provide a detailed analysis and comparison with alternatives for the following items:
  • unit cost of electricity (per 1 kW-h);
  • unit cost per 1 ton of captured CO2 (price of emission reduction).

Author Response

Please see the attachment.

Author Response File: Author Response.docx

Round 2

Reviewer 2 Report

Authors' reply seems sufficient.

I recommend this article for publication in present form.

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