Enhancing Renewable Energy Utilization through Carbon Dioxide Energy Storage

Strategic Insights -

Research from Northeast Electric Power University in Jilin, People's Republic of China, has proposed an optimal scheduling strategy for a gas-liquid phase change carbon dioxide energy storage system (CES) coupled with wind and solar generation. The study aims to integrate CES with an integrated energy system (IES) to reduce carbon emissions and improve economic and environmental performance. By developing an operation framework that incorporates carbon capture and storage (CCS) and power-to-gas (P2G) technologies, the researchers have demonstrated the potential of CES to enhance renewable energy absorption and reduce system carbon emissions.

Key Takeaways:

  • The proposed method reduces system carbon emissions by 33.26% and increases new energy consumption rate by 3.54% when integrated with an IES.
  • The study establishes a mathematical model of gas-liquid phase change CES coupled with wind and solar generation to enhance renewable energy absorption.
  • An IES scheduling model with the goal of considering the comprehensive economic optimization of low-carbon benefits is established, introducing a stepped carbon trading mechanism at the policy level.
  • The researchers emphasize the economic and low-carbon advantages of CES, highlighting the reduction of the total operating cost of the system by 24.30% when CES is integrated with IES.
  • The study concludes that the proposed method provides a theoretical foundation for the research of environmentally friendly IES, demonstrating the potential of CES to improve economic and environmental performance.

Statistics:

  • System carbon emissions are reduced by 33.26% when the proposed method is implemented.
  • New energy consumption rate increases by 3.54% when CES is integrated with IES.
  • Total operating cost of the system is reduced by 24.30% when CES is integrated with IES.
  • The research establishes a mathematical model of gas-liquid phase change CES coupled with wind and solar generation, enhancing renewable energy absorption.

Sources:

  • "Optimal scheduling of integrated energy system with gas-liquid phase change carbon dioxide energy storage considering multi-layer low-carbon benefits." Scientific Reports, 2025;15(1):22263.
  • Northeast Electric Power University, "Reports Findings in Renewable Energy (Optimal scheduling of integrated energy system with gas-liquid phase change carbon dioxide energy storage considering multi-layer low-carbon benefits)." Global Warming Focus. July 14, 2025; p 279.