In a groundbreaking study published in the journal *Nature Scientific Reports*, researchers have unveiled an innovative approach to optimizing integrated energy systems (IES) by incorporating a carbon dioxide energy storage (CES) system. This development, led by Weiguo Li from the Key Laboratory of Modern Power System Simulation and Control and Renewable Energy Technology at Northeast Electric Power University, promises to revolutionize the energy sector by enhancing renewable energy utilization, reducing carbon emissions, and improving economic and environmental performance.
The research introduces an optimal scheduling strategy for a gas–liquid phase change CES coupled with wind and solar generation. This approach considers multi-layer low-carbon benefits, addressing both system structural and technical levels. At the structural level, the study develops an IES operation framework that integrates carbon capture and storage (CCS) and power-to-gas (P2G) technologies. This framework aims to fully exploit the potential of CO2 capture and utilization, a critical step towards achieving net-zero emissions.
“We have developed a mathematical model that enhances the absorption of renewable energy by coupling gas–liquid phase change CES with wind and solar generation,” explains Li. “This model not only improves the economic performance of the system but also significantly reduces carbon emissions.”
The study also introduces a stepped carbon trading mechanism at the policy level, establishing an IES scheduling model that considers the comprehensive economic optimization of low-carbon benefits. The results are impressive: the proposed method reduces system carbon emissions by 33.26%, increases the new energy consumption rate by 3.54%, and reduces the total operating cost of the system by 24.30%.
“This research lays a theoretical foundation for the development of environmentally friendly integrated energy systems,” Li adds. “It provides a roadmap for the energy sector to achieve sustainable and cost-effective solutions.”
The implications of this research are far-reaching. By integrating CES with IES, energy providers can enhance their renewable energy portfolios, reduce their carbon footprint, and achieve significant cost savings. This development is particularly relevant in the context of global efforts to transition to cleaner energy sources and meet stringent environmental regulations.
As the energy sector continues to evolve, the integration of advanced energy storage technologies like CES will play a pivotal role in shaping the future of energy production and consumption. This research not only highlights the potential of CES but also underscores the importance of innovative scheduling strategies in optimizing energy systems for a sustainable future.
In the words of Li, “The future of energy lies in our ability to innovate and adapt. This research is a step towards that future, offering a glimpse into the possibilities that lie ahead.”