Optimization Research on a Novel Community Integrated Energy System Based on Solar Energy Utilization and Energy Storage

Xunwen Zhao, Hailin Mu, Nan Li (), Xue Kong and Xunpeng Shi
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Xunwen Zhao: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
Hailin Mu: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
Nan Li: Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
Xue Kong: School of New Energy, Ningbo University of Technology, Ningbo 315336, China

Energies, 2025, vol. 18, issue 5, 1-19

Abstract: Integrated energy systems (IESs) are essential for enabling the energy transition in communities and reducing CO 2 emissions. This paper proposes a novel IES that combines photovoltaic (PV) and solar thermal energy with coordinated electrical and thermal energy storage to meet the energy demands of residential communities. The system also incorporates hydrogen production for fuel cell vehicles. A dual-objective optimization model was developed, minimizing both economic costs and CO 2 emissions. The system’s performance was evaluated using data from a case study in Dalian, which showed that the IES successfully reduced the annual total cost and CO 2 emissions compared to conventional systems. The key findings showed that PV electrolysis for hydrogen production provides both economic and environmental advantages. The system’s integration of solar thermal energy offers higher economic efficiency, while PV energy supplies enhance coordination. Additionally, carbon trading prices effectively reduce emissions, but excessively high prices do not always lead to better emission outcomes. This study introduces a comprehensive, multi-energy approach for optimizing the energy supply, contributing novel insights to the field of sustainable energy systems.

Keywords: integrated energy system; solar thermal energy; photovoltaic energy; hydrogen production; energy storage; dual-objective optimization (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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