Design of a 100% renewable energy system in Xi’an :a study based on dynamic simulations
Guo, Zihang (2026)
Kandidaatintyö
2026
School of Energy Systems, Energiatekniikka
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2026061570993
https://urn.fi/URN:NBN:fi-fe2026061570993
Tiivistelmä
Driven by global climate change and China’s “dual carbon” targets, urban energy systems are accelerating their transition towards renewable energy. As a major city in north-western China, Xi’an has high electricity demand and significant winter heating demand, creating strong seasonal imbalance in its energy system.
This study uses EnergyPLAN to analyse the feasibility of a 100% renewable energy system in Xi’an under three scenarios: photovoltaic-only generation, photovoltaic plus wind power, and a coupled system including heat pumps and energy storage.
The results show that a photovoltaic-only system cannot maintain stable operation because of daytime electricity surplus and nighttime shortages. Wind power improves the electricity balance, but Xi’an’s limited wind resources restrict large-scale development. In contrast, the integration of heat pumps and energy storage significantly improves system flexibility and reduces the mismatch between renewable energy production and urban energy demand. The study demonstrates that Xi’an has the potential to develop a 100% renewable energy system, but achieving this goal requires renewable energy expansion together with energy storage, thermal storage, heat pumps, and demand-side management technologies.
This study uses EnergyPLAN to analyse the feasibility of a 100% renewable energy system in Xi’an under three scenarios: photovoltaic-only generation, photovoltaic plus wind power, and a coupled system including heat pumps and energy storage.
The results show that a photovoltaic-only system cannot maintain stable operation because of daytime electricity surplus and nighttime shortages. Wind power improves the electricity balance, but Xi’an’s limited wind resources restrict large-scale development. In contrast, the integration of heat pumps and energy storage significantly improves system flexibility and reduces the mismatch between renewable energy production and urban energy demand. The study demonstrates that Xi’an has the potential to develop a 100% renewable energy system, but achieving this goal requires renewable energy expansion together with energy storage, thermal storage, heat pumps, and demand-side management technologies.