Study on the impacts of sharing business models on economic performance of distributed PV-Battery systems

In order to promote the development of energy storage industry and relieve the retirement pressure of EV batteries, the application of retired EV batteries in energy storage for second-life use has gained significant attentions. Considering that distributed battery storages are still not economically attractive enough at present, the booming of sharing economy may provide a more feasible option. Based on a non-cooperative game theoretical model, this study aims to explore the impact of sharing business models on economic performance of retired EV batteries integrated with distributed PV systems. Four scenarios were proposed, including: a traditional scenario of S1 - individual battery storages, the sharing scenarios of S2 - shared battery storage, S3 - shared PV generation, and S4 - shared battery storage and shared PV generation. Through a case study in Beijing, the obtained results show that: (i)although sharing business models may not guarantee to bring economic benefits to each individual, they can contribute to a reduction in electricity expenses of the whole community; (ii) sharing business models can enhance PV self-consumption ratio and battery utilization ratio; (iii) sharing business models can improve the NPV by 1995 RMB-6975 RMB compared to the traditional scenario.