Ricarica Bidirezionale (V2H): Your Car as a Batteria Domestica

What is ricarica bidirezionale (V2H)?

With ricarica bidirezionale, your auto elettrica can not only absorb elettricità, but also feed it back to your home. This is called Vehicle-to-Home (V2H). Your EV batteria of 40–100 kWh effectively becomes a massive batteria domestica — many times larger than a fixed batteria domestica of 5–15 kWh. The concept is simple: charge your car during the day with energia solare and use that elettricità in the evening to power your home.

V2H is becoming increasingly practical in 2026 thanks to more compatible cars, more affordable bidirectional chargers and improved EU regulations. Tuttavia, there are important caveats — your car is not always at home, and the additional cicli di carica affect the batteria's lifespan.

Which auto elettricas support V2H?

Not every EV can charge bidirectionally. The car must contain specific hardware, and the produttore must enable V2H functionality via software. In 2026, the following models support V2H:

• Nissan Leaf/Ariya — pioneer in V2H via the CHAdeMO protocol
• Hyundai Ioniq 5/6 — V2H via CCS with 3.6 kW output
• Kia EV6/EV9 — V2H via CCS, up to 3.6 kW feed-back
• BYD Atto 3, Seal, Dolphin — V2H available in some markets
• Volkswagen ID.4/ID.5 — V2H via software update expected in 2026

Which chargers do you need?

For V2H, you need a special bidirectional charger. A standard wallbox (AC charger) only works in one direction. Bidirectional chargers operate on DC (direct current) and cost considerevolmente more:

Please note: the bidirectional charger must be compatible with your car and your home installazione. Not every combination works. Always seek advice from a installatore certificato.

Pros and cons of V2H

V2H has clear pros and cons compared to a fixed batteria domestica:

• Enormous storage capacità: an EV batteria of 60 kWh is 4–12x larger than an average batteria domestica
• Dual use: your batteria serves as both driving range and home storage
• Emergency power: during a interruzione di corrente, your car can power the entire home for days
• Leveraging an existing investment: you have already paid for the batteria as part of the car

• Car not always at home: when you drive to work, your "batteria domestica" is gone
• Additional degradazione della batteria: each V2H cycle counts as a ciclo di carica and shortens durata della batteria
• Expensive bidirectional charger: €3,000–6,000 for the charger alone
• Limited compatibility: not every car and not every charger work together

V2H vs. a fixed batteria domestica: an honest comparison

The key question: is V2H a good alternative to a fixed batteria domestica? That depends on your situation. Here is an honest comparison:

The conclusion is nuanced: V2H offers enormous storage capacità, but a fixed batteria domestica is more reliable and always available. The ideal situation? Both: a batteria domestica for daily storage and V2H as an additional buffer for peak consumption or emergency power.

Costs and periodo di ammortamento of V2H

The costs for a V2H installazione are still considerable in 2026. The bidirectional charger costs €3,000–6,000 including installazione. On top of that, your car must be compatible — and those cars are often more expensive than models without V2H support.

The periodo di ammortamento for V2H alone (excluding the car itself) is 8–12 years, assuming you have the car at home daily and actively use V2H. By comparison: a fixed batteria domestica of 10 kWh has a periodo di ammortamento of 5–8 years and is much simpler to install.

Conclusion: V2H as a supplement, not a replacement

V2H is a promising technology that will become increasingly accessible in the coming years. But in 2026, for most nuclei familiari it is still not a replacement for a fixed batteria domestica. The reasons: higher costs, dependence on car availability, limited model compatibility and additional degradazione della batteria.

Our recommendation: invest now in a fixed batteria domestica for daily accumulo di energia. Once V2H chargers become cheaper and more cars support the technology, you can add V2H as a supplement. At Home Energy Solutions, we are happy to advise you on the optimal storage for your situation.