New role as a mobile power source
Considerations are currently underway to utilize BEVs, PHEVs and FCEVs as part of the power supply grid.
Unlike vehicles of the past, BEVs and PHEVs have large capacity batteries that can electrically connect to the power supply for a prolonged amount of time.
The aim is to u se this capability as a power supply system. Shown below is what roles electric vehicles should take as part of the power supply grid.
Roles of EVs as part of the power supply
| Name | Flow of Electricity | Expected features |
|---|---|---|
| Vehicle to Home （V2H） |
From EV to home | Use of electricity of the vehicle as emergency power supply for the home |
| Vehicle to Grid※ （V2G） |
From EV to the grid | Supply electricity from vehicle to the power supply grid to use for adjusting the frequencies/demands to the power supply |
※uses power distribution networks owned by electric companies
V2Hs were commercialized at the time of the Great Eastern Japan Earthquake. In many instances, they are used in in combination with BEVs at time of purchase.
The usage of V2Gs will grow in the future, connecting a large number of BEVs and PHEVs to the power supply grid. Field-testing for utilizing them as controllable frequency or as power source to adjust energy demands is currently underway.
