Evaluation of residential power supply by photovoltaics and electric vehicles

Takuya Higashitani, Takashi Ikegami, Akane Uemichi, Atsushi Akisawa*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Electric vehicles (EVs) and vehicle-to-home (V2H) technologies are expected to be used as domestic electricity storage systems, thereby promoting the self-consumption of photovoltaic (PV) power. The purpose of this study was to evaluate the profitability of V2H installation, the optimal facility configuration and the energy performance of V2H, while considering a diversity of household types and storage facility options. We optimized the facilities and operation strategy of a residential energy system under many scenarios with different electricity demand profiles, automobile usage patterns and available areas for PV installation. The results showed that a V2H system should generally be installed instead of a stationary battery (SB), but combining a V2H system with a SB is more economical for households with long EV absence times. Additionally, V2H is profitable for households with short EV absence times, large available areas for PV installation and high electricity demand. Furthermore, V2H exhibits superior energy independence and energy-saving effects for households whose annual PV generation exceeds the yearly household electricity demand.

Original languageEnglish
Pages (from-to)745-756
Number of pages12
JournalRenewable Energy
Volume178
DOIs
Publication statusPublished - 2021 Nov
Externally publishedYes

Keywords

  • Electric vehicle
  • Optimization
  • Photovoltaics
  • Residential energy system
  • Vehicle-to-home

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment

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