Suggested Citation: Nicholas, Michael A., Gil Tal, Wei Ji (2017) Lessons from In-Use Fast Charging Data: Why Are Drivers Staying Close to Home?. Institute of Transportation Studies, University of California, Davis, Research Report UCD-ITS-RR-17-01
By examining a large in-use dataset from the charging provider EVgo, we study the relationship between home and fast charging. Many consumers are charging close to home with more than half of the paid sessions being less than 10.3 miles as the crow flies and 13.6 miles network distance from home. Free sessions (2 years of unlimited charging provided by the OEM at the time of vehicle purchase) are 4.9 miles from home as the crow flies. Further, increased usage in the early morning for free fast charging indicates the same trend where consumers may delay home charging in order to fast charge or simply do not have access to a home charger. These results, consisting of over 95% Nissan LEAFs, suggest that fast charging is being used as a substitute for home or other public charging in some cases. Further research is needed to determine whether these trends will continue with longer range BEVs.