Energy arbitrage using second-life electric vehicle battery: A feasibility study based on CU-BEMS data

This study explores energy storage from repurposed EV batteries. For storage sizing, 18 months of actual load profiles from a building energy management system are employed to avoid the shortcomings of a general representative load profile. Ambient temperature is used to evaluate battery performance throughout the project. Our battery degradation models have a higher R-squared than previous studies, making our study unique. Battery deterioration is analyzed using off-peak energy arbitrage and solar energy arbitrage, which use full and half cycles per day and offer different yields. Economic evaluation uses net present value and IRR. The study indi­ cated electricity prices drive return period. The sensitivity analysis shows that off-peak energy arbitrage is not practicable for the 10-year project, but a battery cost of $50 to $60 per kWh and operational temperatures below 35 ◦C would make solar energy arbitrage profitable.