Technology • EV • Australia
Bidirectional EV Charging: V2H and V2G Explained for Sydney Homes
Bidirectional charging lets your EV battery send power back to your home (V2H) or the grid (V2G). In 2026, it’s real in Australia — CEC-approved chargers exist, compatible cars are arriving, and Ausgrid is running pilot programs. But the hardware costs $10,000+, only a few cars support it, and the economics don’t stack up for most homes yet. Here’s the honest picture.
Primary sources: Clean Energy Regulator.
What Is Bidirectional Charging — V2H, V2G, and V2L
- V2L (Vehicle-to-Load): Your EV powers appliances directly from a plug on the car — camping, power tools, emergency backup. Most modern EVs support this already. No special charger needed.
- V2H (Vehicle-to-Home): Your EV battery sends power back through a special bidirectional charger to power your entire house — like a home battery, but using the car's battery. Requires a CEC-approved bidirectional charger and compatible car.
- V2G (Vehicle-to-Grid): Your EV sends power back to the electricity grid via a bidirectional charger, and you get paid for it at the export rate (or at a premium rate during grid peaks). Requires V2G-enabled hardware, a compatible car, and an agreement with your electricity retailer.
V2L is available now on most EVs. V2H and V2G are technically possible in Australia in 2026 but still in early stages.
Which Australian EVs Support Bidirectional Charging in 2026?
As of April 2026, the following cars have confirmed bidirectional (V2H/V2G) capability for the Australian market:
- Nissan Leaf (2nd gen): The original V2H pioneer. CHAdeMO connector. Compatible with select bidirectional chargers but CHAdeMO is a declining standard in Australia.
- Volkswagen ID.4, ID.5, ID.Buzz (2026+): VW confirmed V2G support for Australian models via CCS. Requires compatible CCS bidirectional charger.
- Hyundai Ioniq 5/6 (2025+): V2L standard. V2G capability announced but software rollout timeline unconfirmed for Australia.
- Ford F-150 Lightning: V2H capable via Ford Charge Station Pro. Not yet widely available in Australia.
Most popular Australian EVs (Tesla Model Y, BYD Seal, MG4, Kia EV5) do NOT support V2H/V2G in 2026. Tesla has discussed V2H capability but has not rolled it out to Australian Model Y/3 hardware yet.
What Hardware Do You Need in Your Home?
A bidirectional charger installation requires:
- CEC-approved bidirectional charger: Currently approved in Australia: V2Grid Numbat (Ausgrid-approved), StarCharge Halo, Infypower Numbat7, SigEnergy. Cost: $10,000–$15,000 for hardware alone.
- Hybrid or bidirectional inverter (some systems require this to manage power flow between car, home, solar, and grid)
- Switchboard modifications to handle bidirectional power flow safely
- Ausgrid/Endeavour Energy approval under AS/NZS 4777.2:2020 Amendment 2 (effective 23 August 2025) which includes Mode 4 provisions for bidirectional energy transfer
Total installed cost for a V2H-capable system: $12,000–$20,000 depending on the charger, inverter requirements, and switchboard modifications.
Is It Worth It in 2026 or Should You Wait?
For most Sydney homeowners in 2026: wait. The economics don't stack up yet for three reasons:
- Hardware cost is high. A home battery (Tesla Powerwall 3) costs $12,000–$16,000 installed and does the same V2H job without depending on your car being parked at home. A bidirectional charger costs $12,000–$20,000 and ALSO requires a compatible car.
- Car compatibility is limited. If you drive a Tesla, BYD, MG, or Kia — V2H/V2G isn't available on your car yet. The cars that support it (Nissan Leaf, VW ID series) are a small fraction of the Australian market.
- V2G revenue is minimal. Feed-in rates of 3–8¢/kWh make selling car battery power to the grid barely worth the battery degradation. Wholesale-rate schemes (via Amber Electric) are more promising but still niche.
Exception: If you drive a compatible car, already have solar, AND want backup power during outages — V2H is a genuine alternative to buying a separate home battery. The car battery is typically 60–100 kWh vs 10–13.5 kWh for a Powerwall — massively more capacity.
Frequently Asked Questions
What is bidirectional EV charging?
Bidirectional charging allows your EV battery to send power back — either to your home (V2H) or to the electricity grid (V2G). It turns your car battery into a power source, not just a power consumer. V2L (powering appliances directly from the car) is a simpler version that most modern EVs already support.
Which cars support V2H/V2G in Australia in 2026?
Nissan Leaf (CHAdeMO), VW ID.4/ID.5/ID.Buzz (CCS), and select Hyundai Ioniq models have confirmed bidirectional capability. Most popular Australian EVs (Tesla Model Y, BYD Seal, MG4, Kia EV5) do NOT support V2H/V2G yet.
How much does a bidirectional EV charger cost?
$10,000–$15,000 for the charger hardware. Total installed cost including switchboard modifications and network approval: $12,000–$20,000. This is comparable to a home battery (Powerwall $12,000–$16,000) but requires a compatible car.
Is bidirectional charging worth it in 2026?
For most Sydney homeowners, not yet. Hardware is expensive, car compatibility is limited, and V2G revenue is minimal at current feed-in rates. Wait unless you drive a compatible car AND want backup power as an alternative to a home battery.
Does bidirectional charging damage the car battery?
Additional charge-discharge cycles do contribute to battery degradation over time. However, modern EV batteries are designed for thousands of cycles — V2H/V2G adds perhaps 10–15% more cycling over a car's lifetime. Most manufacturers offering V2G-compatible cars have adjusted their battery warranties accordingly.
Can I use V2H to power my home during a blackout?
Yes — that's one of the primary use cases. A V2H-enabled system can disconnect from the grid (islanding) and power essential home circuits from the car battery during an outage. A 75 kWh car battery can power a typical Sydney home for 2–3 days. However, this requires specific hardware and switchboard configuration — a standard EV charger cannot do this.
Interested in bidirectional charging?
We can assess your home's suitability for V2H — switchboard, solar system, and car compatibility. If the timing isn't right yet, we'll tell you honestly.