EV Charging: Vehicle to Building (V2B) and Vehicle to Home (V2H)

EV Charging: Vehicle to Building (V2B) and Vehicle to Home (V2H)

 

Because the Vehicle to Home (V2H) and Vehicle to Building (V2B) use cases are so similar, we'll examine them together in this stage. Technically, they are identical, but both terms are used in the industry.

The charge point is connected behind the meter of an existing home (V2H) or building in these circumstances (V2B). This implies that electricity from the power grid travels first via the meter and then into the building or to the charge point. When the EV discharges via the charge point, electricity flows into the building but does not pass through the meter and onto the larger power grid.

What exactly is vehicle-to-home (V2H)/ vehicle-to-building (V2B)?

Vehicle-to-home (or V2H) is an idea that is quite similar to vehicle-to-grid. The distinction is that with V2H, the energy is used to power a home rather of being returned to the grid.

Vehicle-to-home technology allows homeowners more control over their energy use by letting them to move part of the power they consume from the grid to off-peak hours when energy prices are cheaper.

Consider the following scenario: you're at home, your electric car is charging in the driveway, and you're doing some housework. You have a lot of appliances turned on, and you're using a lot of electricity from the grid. You might use some of the energy stored in your EV to power your appliances with V2H, lowering the amount of electricity drawn from the grid.

When you're finished and the appliances are turned off, you may recharge your car's battery using grid energy at night to take advantage of reduced off-peak costs. This manner, you may immediately cut your energy cost by moving part of the electricity you consume when cheaper rates are available.

Peak demand in the normal home is roughly 3-4 kW, therefore this may be quite advantageous. In general, the battery in your automobile might power your home's electric appliances for 12 to 20 hours.

V2H is also a means to prevent overloads by providing an alternative source of power if your electricity demand exceeds the capacity of the grid. It may also serve as a backup power source in the event of a blackout, allowing you to keep your home powered without the use of a generator or a storage battery.

Will my EV always be fully charged with V2H and V2B?

One of the primary problems with V2H is your EV's battery level, as utilizing it as a source of power depletes the battery.

As previously said, an EV sits unused the majority of the time: as a result, there is a significant portion of the day during which your car may supply electricity without you ever realizing. Assume you get home from work in the evening and will not leave the house till the next day. You could simply use your EV to power your home in the evening and only charge it after, say, midnight. Even with current charging speeds, you would still wake up with a fully charged battery.

This is without even considering that the vast majority of everyday trips are significantly shorter than the range of a current EV, implying that you would not require a full battery every day regardless.

V2H and the storage of renewable energy generated by solar panels

Vehicle-to-home can improve your home's energy consumption even more if you generate your own electricity, such as using solar panels. Solar panels create electricity only when the sun shines, which may not be during the periods when you need the most energy. For example, when the sun has set, you may require more power to prepare dinner.

With vehicle-to-home, you may store renewable energy generated by charging your EV during the day and then utilize some of that power to satisfy your electricity demands at night.

 

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