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Bidirectional EV chargers have the power to change the way we think about electric vehicle ownership and energy management. Unlike traditional chargers that only allow you to charge your EV's battery, bidirectional chargers enable the flow of electricity in both directions. This means you can take the power stored in your EV's battery and send it to your home, the grid, or even to a particular device.
Why would you get a bidirectional charger?
There are several compelling reasons to consider investing in a bidirectional charger:
Ability to back up your home in case of an outage: One of the most significant advantages of a bidirectional charger is its ability to provide backup power to your home during a power outage. Your EV essentially becomes a mobile power source, keeping essential appliances running until the grid is restored.
To reduce your electricity bill: If you're on a time-of-use rate plan, where electricity prices vary depending on the time of day, a bidirectional charger can help you save money. You can charge your EV during off-peak hours when electricity is cheaper and then use that stored energy to power your home during peak hours when electricity is more expensive.
To make additional money by selling electricity back to the grid: In some areas, you may be able to sell excess electricity stored in your EV's battery back to the grid. This can provide an additional source of income and help stabilize the grid.
This ability to sell electricity back to the grid differs a lot state by state.
If you live in California or Connecticut, we’re working with those states to pilot programs here and can even get you up to 75% off the cost of your charger and install.
What else do you need in addition to a bidirectional charger?
If you're considering installing a bidirectional charger, it's important to keep in mind that you'll likely need a few additional electrical components.
For example, since bidirectional chargers can handle more power than traditional chargers, you may need to install a dedicated electrical circuit.
Additionally, if you're interested in using your electric vehicle for home backup power during outages, you'll need to make sure your home can be safely "islanded" from the grid. This usually involves installing a transfer switch, which allows you to switch between drawing power from the grid and drawing power from your EV's battery.
It's always best to consult with a qualified electrician to determine the specific requirements for your home and electrical system.
How do you know if your EV is compatible with certain chargers?
Compatibility is a crucial factor to consider when choosing a bidirectional charger. For example the Ford F150 is only compatible with its own charger, and the same goes for the Tesla Cybertruck.
That said, there are more independent chargers that are coming to market and will be compatible with many more makes and models. There’s a movement in the industry to create more standardization across chargers and cars, so that consumers can benefit without being locked in.
A good Google search can go a long way, but we’re also happy to chat – just drop us a line in the contact form.
How much should you plan to spend on getting a bidirectional charger?
One of the really great things about a bidirectional charger is the ability to use your EV’s battery without needing to drop $20K on a stationary home battery system. But be mindful that the upfront cost includes not just the charger, but any other equipment like a transfer switch and panel upgrades if you want home backup capabilities. Install costs can vary tremendously house to house.
As a ballpark figure, chargers might run ~$5000 and install another $5000. Several states have pilot programs that help reduce the cost of these chargers and installs. For example, if you live in California or Connecticut, we can help you save up to 75% on the cost of the charger and install. Fill out the reservation form and we’d be happy to reach out and share more information!
