Cost analysis of DCFC fast charging station power rates for workplace charging.

Kucuksari, Sadik; Erdogan, Nuh

Abstract

DC fast charging (DCFC) station becomes prominent thanks to offering faster charging service. However, they increase the peak demand, hence, the demand charge for industrial and commercial customers increases. This study analyses cost behaviors of various DCFC power rates (i.e., 50 kW, 150 kW, 350 kW) at workplaces under demand metered and EV specific TOU rates for various EV utilization. An optimal cost model with proposed interrupted charging profile is presented that minimizes the daily levelized total cost of DCFC station at workplaces. It is shown that DCFC cost behaviors differ from the utility rate and EV utilization. From the grid perspective, the EV specific rate increases the peak demand considerably as compared to the demand metered rate. This is due to the nature of the TOU rate design. However, this impact can be minimized with solar generation that coincides with the peak demand hours.

Citation

KUCUKSARI, S. and ERDOGAN, N. 2022. Cost analysis of DCFC fast charging station power rates for workplace charging. In Proceedings of 13th IEEE (Institute of Electrical and Electronics Engineers) PES (Power and Energy Society) Innovative smart grid technologies conference 2022 (ISGT 2022): moving to a 3-D energy landscape: decarbonized, democratized, decentralized, 24-28 April 2022, New Orleans, USA. Piscataway: IEEE [online], article 9817537. Available from: https://doi.org/10.1109/ISGT50606.2022.9817537

• Conference Name: 13th IEEE (Institute of Electrical and Electronics Engineers) PES (Power and Energy Society) Innovative smart grid technologies conference North America 2022 (ISGT NA 2022): moving to a 3-D energy landscape: decarbonized, democratized, decentralized
• Conference Location: New Orleans, USA
• Start Date: Apr 24, 2022
• End Date: Apr 28, 2022
• Acceptance Date: Oct 31, 2021
• Online Publication Date: Jul 12, 2022
• Publication Date: Dec 31, 2022
• Deposit Date: Aug 2, 2022
• Publicly Available Date: Aug 2, 2022
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Series ISSN: 2472-8152
• Book Title: Proceedings of 13th IEEE (Institute of Electrical and Electronics Engineers) PES (Power and Energy Society) Innovative smart grid technologies conference 2022 (ISGT 2022): moving to a 3-D energy landscape: decarbonized, democratized, decentralized
• ISBN: 9781665437752
• DOI: https://doi.org/10.1109/ISGT50606.2022.9817537
• Keywords: Demand charge; Electrified fleets; EVSE, Plug-in electric vehicles; Time-of-use tariff; Workplace charging
• Public URL: https://rgu-repository.worktribe.com/output/1713054