Updated March 27, 2026
Most people buy an EV to save on fuel costs. But if that’s the only way you use your EV, you might be missing out on extra savings.
Your electric car is more than just transportation. It’s like a battery on wheels that, with the right setup, can power your home, cut your energy bills, and even make money while parked.
That’s not a future promise. It’s happening in Australian homes right now.
At PSC Energy, we install this technology daily. Here’s what you need to know about bidirectional EV charging and if it’s a good fit for you.
In this article, you’ll learn:
- What Is Bidirectional EV Charging?
- What’s the Difference Between V2H, V2G, and V2L
- How Does Bidirectional EV Charging Work?
- The Pros and Cons of Bidirectional Charging
- What Bidirectional EV Chargers Are Available in Australia Right Now?
- How to Set Up Bidirectional EV Charging at Home
- FAQ: Bidirectional DC EV Charger
By the end of this article, you’ll understand what bidirectional DC EV charging is and if it’s right for you. Let’s get started.
What Is a Bidirectional EV Charger?
A regular EV charger only moves electricity one way: from the grid or your solar panels into your car.
Bidirectional EV charging does both: it charges your car when you need it and exports electricity back out when you don’t.
The “export” part is where it gets interesting. Depending on your charger, the electricity can power your home, feed back to the grid, or run appliances you plug into your car.
What’s the Difference Between V2H, V2G, and V2L
These three terms describe where the energy flows when it leaves your car’s battery.
- Vehicle-to-Home (V2H) sends power from your EV to your home. Your solar panels charge your car during the day, and at night, your car powers your home. It acts like a home battery.
- Vehicle-to-Grid (V2G) sends power from your EV back to the electricity grid. When the grid is stressed, like on a hot summer night when everyone uses air conditioning, your car can send energy back. With a Virtual Power Plant (VPP) like Amber, your energy retailer can pay you for this electricity.
- Vehicle-to-Load (V2L) lets you plug appliances straight into your car, like a fridge, power tool, or coffee maker. It’s handy on worksites, campsites, or during blackouts when you need to keep things running.
If you’re interested in learning a bit more about charging EVs and how a bidirectional charger can charge your car, you might want to check out the following article titled, How Much Solar (and Battery) Do You Need to Charge an EV in Australia?
How Does Bidirectional EV Charging Work?
Imagine a typical day with solar panels and a V2H setup.
- Your panels generate power throughout the morning.
- Your home uses what it needs, and the rest goes into your car’s battery.
- By the time the sun sets, your car is full.
- You run your home off that stored energy through the evening without touching the grid.
Now imagine a summer heatwave when the grid is under pressure. With a V2G plan, your car sends some stored energy back to the grid during peak times, and your energy retailer pays you for it. When prices fall overnight, your car charges again at a cheaper rate.
This is not theoretical. In February 2024, major storms knocked out power to about 90,000 homes in Melbourne. EVs based in Canberra responded by feeding stored power back into the grid from over 500km away.
It was the first time anywhere in the world that vehicle-to-grid technology had responded to a real emergency. And it worked.
Pros and Cons of Bidirectional Charging
The benefits are real and significant:
- Use your EV as a home battery without buying a separate one.
- Store your own solar energy rather than exporting it to the grid at a low feed-in rate.
- Protect your home from blackouts.
- Charge your car at off-peak rates and use that energy when electricity prices climb.
- Earn passive income through a VPP from energy you were going to generate anyway.
The challenges are worth knowing too:
- Not many EVs fully support bidirectional charging yet.
- Some car makers are still sorting out warranty terms and software.
- Australia updated its grid connection standards in 2024, but rules still vary between states and network operators.
- Installation costs are not cheap.
Some worry that charging and discharging a battery often will wear it out faster. That’s a fair concern.
Brands like BYD and Ford say it’s not a big issue, especially when a smart system manages charging. The evidence supports this, but it’s a good idea to ask your installer how the system handles charge cycles.
These challenges are improving fast. Costs are coming down, regulations are clearer, and more EVs with bidirectional charging are hitting the market every year.
If you’re interested in learning a bit more about public charging stations, you might want to check out the following article titled, Electric Vehicle (EV) Charging Guide 2026.
What Bidirectional EV Chargers Are Available in Australia Right Now?
The market is still early but moving fast.
As far as chargers go, the Sigenergy Bidirectional Charger is one of the standout options available now. We’re a little bit biased because it’s a brand we install.
- It integrates with Sigenergy’s stackable home battery system.
- It works well with solar and is V2G-ready.
- Pricing starts around $7,500.
Other chargers are in development, with more expected through 2026.
More EV models now support bidirectional charging through CCS2, and that number keeps growing. Before buying an EV for this feature, check with the manufacturer to make sure the specific model supports it, not just the brand.
How to Set Up Bidirectional EV Charging at Home
Setting this up involves more than just buying a charger. Here’s what you need to do:
- Confirm your EV supports bidirectional charging. Not all do this yet.
- Check your home’s power supply. Most Australian homes run on single-phase power, but some chargers require three-phase power.
- Get approval from your DNSP (your local electricity network operator), which needs to sign off on any grid-connected export system.
- Work with an installer who understands EV systems and grid export rules, not just general electrical work.
- Integrate your charger with your solar system. This is where the biggest long-term savings come from.
Each step is important. Skipping any can lead to delays, extra costs, or a system that doesn’t work as it should.
Wrapping Up: Your Car Just Got a New Job
If you have rooftop solar, it’s almost definitely worth it if your EV supports bidirectional charging or you’re planning to get one that does.
You’ll get more value from every bit of solar energy you produce, have backup power during outages, and even have a chance to earn from your energy instead of just spending on it.
Even if you don’t have solar or an EV yet, it’s worth knowing about this technology. It’s shaping how Australian homes will handle energy in the years ahead.
At PSC Energy, we help homeowners with these decisions, from solar design to EV charger installation and V2G setup. It’s what we do.
If you’re interested in learning a bit more about bidirectional EV charger considerations, you might want to check out the following article titled, Solar Batteries vs. Electric Car Batteries: Which One Should Power My Home?
FAQ: Bidirectional DC EV Chargers
Are bidirectional EV chargers available in Australia?
Yes. Bidirectional chargers are available in Australia right now. The market is still growing, but options like the Sigenergy Bidirectional Charger are already available and ready to install. More products are expected through 2026.
What is the Sigenergy Bidirectional Charger?
The Sigenergy Bidirectional Charger is one of the most capable bidirectional chargers available in Australia today. It integrates with Sigenergy’s stackable home battery system, works seamlessly with rooftop solar, and is fully V2G-ready. Pricing starts at around $7,500.
What’s the difference between a bidirectional AC charger and a bidirectional DC charger?
A bidirectional DC charger moves power as direct current, which is what your car’s battery stores. This makes it faster and more efficient, since it skips the conversion step. A bidirectional AC charger converts power between AC and DC, adding a step but working with standard home power supplies. Most home bidirectional charger setups in Australia use AC, though bidirectional DC chargers are becoming more common as the technology matures.
What is a bidirectional DC-DC charger?
A bidirectional DC-DC charger moves power between two DC sources, for example, between your EV battery and a home battery storage system, without converting to AC at any point. This makes it highly efficient for DC-powered solar and battery setups.
What is a bidirectional DC EV charger?
A bidirectional DC EV charger connects directly to your car’s battery using DC power. It can charge your car quickly and draw power back out just as fast. These are particularly useful in V2G setups where speed and efficiency matter.
Does bidirectional charging damage my EV battery?
This is one of the most common concerns, and it’s a fair one. The short answer is that well-managed bidirectional charging has not been shown to cause significant battery degradation. Brands like BYD and Ford have publicly stated they’re not concerned about it when charging is handled by a smart system. Ask your installer how the system you’re considering manages charge cycles.
How much does it cost to install a bidirectional charger in Australia?
Costs vary depending on your home setup, your EV, and the charger you choose. The Sigenergy Bidirectional Charger starts at around $7,500 before installation. You may also need electrical upgrades depending on your home’s power supply. The best way to get an accurate figure is to have an experienced installer assess your home.
