Volume 47

Establishing decarbonization strategies for Chinese cities using rooftop PV integrated with EVs — A case study in Qingdao Zengao Dong, Takuro Kobashi

Abstract

To achieve carbon neutrality while maintaining economic stability, it is imperative to promote the widespread adoption of clean energy and further reduce emissions from fossil fuel use. With the decreasing cost of clean energy and the increasing penetration of electric vehicles (EV), utilizing EVs as the primary energy storage for photovoltaic (PV) systems can play a crucial role in constructing low-carbon cities. In this study, we conducted a technical and economic analysis of a combined rooftop PV generation and EV energy storage system in Qingdao, China. Our findings reveal that leveraging EV energy storage to address the bottleneck in urban distributed PV development holds immense potential. By 2030, carbon emissions in the electricity and vehicles part could be reduced by 73%, while energy costs could decrease by 35%. This study can provide a reference for the decarbonization in Qingdao and provide a research framework for smaller scale studies.

Keywords Renewable energy, decarbonization, photovoltaic, electric vehicles, Qingdao