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Optimal and Sustainable Scheduling of Integrated Energy System Coupled with CCS-P2G and Waste-to-Energy Under the “Green-Carbon” Offset Mechanism

Author

Listed:
  • Xin Huang

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China)

  • Junjie Zhong

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China)

  • Maner Xiao

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China)

  • Yuhui Zhu

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China)

  • Haojie Zheng

    (School of Electrical and Electronic Engineering, North China Electric Power University, Beijing 102206, China)

  • Bensheng Zheng

    (School of Electrical and Information Engineering, Changsha University of Science and Technology, Changsha 410114, China)

Abstract

Waste-to-energy (WTE) is considered the most promising method for municipal solid waste treatment. An integrated energy system (IES) with carbon capture systems (CCS) and power-to-gas (P2G) can reduce carbon emissions. The incorporation of a “green-carbon” offset mechanism further enhances renewable energy consumption. Therefore, this study constructs a WTE-IES hybrid system, which conducts multi-dimensional integration of IES-WTP, CCS-P2G, photovoltaic (PV), wind turbine (WT), multiple energy storage technologies, and the “green-carbon” offset mechanism. It breaks through the limitations of traditional single-technology optimization and achieves the coordinated improvement of energy, environmental, and economic triple benefits. First, waste incineration power generation is coupled into the IES. A mathematical model is then established for the waste incineration and CCS-P2G IES. The CO 2 produced by waste incineration is absorbed and reused. Finally, the “green-carbon” offset mechanism is introduced to convert tradable green certificates (TGCs) into carbon emission rights. This approach ensures energy demand satisfaction while minimizing carbon emissions. Economic incentives are also provided for the carbon capture and conversion processes. A case study of an industrial park is conducted for validation. The industrial park has achieved a reduction in carbon emissions of approximately 72.1% and a reduction in the total cost of approximately 33.5%. The results demonstrate that the proposed method significantly reduces carbon emissions. The energy utilization efficiency and system economic performance are also improved. This study provides theoretical and technical support for the low-carbon development of future IES.

Suggested Citation

  • Xin Huang & Junjie Zhong & Maner Xiao & Yuhui Zhu & Haojie Zheng & Bensheng Zheng, 2025. "Optimal and Sustainable Scheduling of Integrated Energy System Coupled with CCS-P2G and Waste-to-Energy Under the “Green-Carbon” Offset Mechanism," Sustainability, MDPI, vol. 17(11), pages 1-27, May.
    • Handle: RePEc:gam:jsusta:v:17:y:2025:i:11:p:4873-:d:1664633
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