United States Department of Transportation
i
Electric vehicle charging technologies analysis and standards : final research project report.
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2017-02-01
[PDF-458.83 KB]
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Edition:Final research project report
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Abstract:This project has evaluated the technologies and standards associated with Electric
Vehicle Service Equipment (EVSE) and the related infrastructure, and the major cost
issue related to electric vehicle (EV) charging -- the cost of utility power. The technology
assessment report evaluated safety standards for infrastructure, highway and vehicles
and the barriers and challenges of deploying an expanded network of EV charging
stations. The report also made recommendations to help standardize and expedite EVSE
infrastructure and charging network deployment.
For the cost analyses, the issue of demand charges for utility power are examined for two
case studies – one assumes that a dedicated utility electric meter connection for the EV
charging station, the second case assumes that the EV charging station is part of the total
electrical service for a commercial or industrial building complex. The costs associated
with EV charging are the electricity used to charge the vehicle, the equipment needed to
provide the electricity and charging station maintenance. Both studies use a life cycle cost
analysis. The cost analysis shows that these high-power charging stations can
significantly add to the facilities monthly electric bill because of utility demand charges
and underutilization of the charging facility. A most important result from this work is that
an energy management system (EMS) can lend itself to reducing or eliminating the
portion of the electric bill associated with charger electrical demand. The detailed results
from this project are presented in three reports.
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