V2G and Vehicle-to-Home Charging UK 2026: What's Real

The EV as a Second Battery for the House

Most home chargers run one way: grid to car. A new generation of bidirectional hardware can also send power the other way — into the house (Vehicle-to-Home, or V2H) or back to the national grid (Vehicle-to-Grid, or V2G).

The premise is straightforward. An EV battery is large: a Tesla Model 3 holds 60kWh, enough to run an average UK home for two days. Bidirectional charging turns that from idle storage into a usable asset.

This is no longer hypothetical. The hardware exists, UK regulations support it and the first products are arriving. Here's what's worth knowing.

V2H vs V2G: What's the Difference?

Vehicle-to-Home (V2H) routes energy from the car battery into the house's electrical system. During a power cut, the EV acts as backup. During peak pricing, the house runs off the car instead of paying peak rates.

Vehicle-to-Grid (V2G) goes further: energy flows back to the national grid, and the driver is paid for it. Suppliers buy stored electricity at times of high demand; the car recharges cheaply overnight.

Both require a bidirectional charger — a standard home wallbox cannot do this.

What Changed in the UK in 2025

In March 2025, the UK government mandated V2G for all new commercial installations rated above 22kW. That doesn't reach home chargers directly, but the direction of travel is clear: V2G is being written into the national infrastructure.

Several suppliers are trialling V2G tariffs. The most visible is Octopus Energy's Power Pack — effectively paying drivers to let Octopus use the EV battery as grid storage. Early participants have reported credits large enough to cover home electricity altogether.

What Hardware Is Available?

Wallbox Quasar 2

The Wallbox Quasar 2 is the most visible bidirectional home charger heading to the UK:

• Price: ~£6,100 (plus installation) — premium hardware
• Power: up to 11.5kW bidirectional DC
• Compatible EVs: Kia EV9, Hyundai Ioniq 5/6, Cupra Born (more expected)
• UK availability: European rollout began Q4 2025; UK launch TBC, expected in 2026

The Quasar 2 is a DC charger — it bypasses the car's onboard AC charger and talks directly to the battery. That enables bidirectional flow, but limits compatibility to vehicles that support CCS bidirectional communication.

NexBlue Point 2 (V2G-Ready)

The NexBlue Point 2 is not bidirectional today, but it's ISO 15118 and V2G-ready — the communication protocols are built in, and a firmware update could enable V2G once the UK ecosystem matures. At ~£530, it's a fraction of the Quasar 2, and a reasonable hedge for buyers who want optionality without paying now.

Zaptec Go 2 (V2G-Ready)

The Zaptec Go 2 is also ISO 15118 compliant and V2G-ready. At £707 it costs more than the NexBlue, but comes from a more established brand with a larger install base.

Which EVs Support Bidirectional Charging?

Not every EV can send power back. The vehicle itself needs to support bidirectional DC charging via CCS. As of early 2026, confirmed compatible vehicles include:

• Kia EV9 — the first mass-market V2H car in the UK
• Hyundai Ioniq 5 and Ioniq 6 — via Hyundai's V2L (Vehicle-to-Load) system
• Cupra Born (77kWh version)
• Nissan Leaf (via CHAdeMO, with the original Wallbox Quasar)
• MG ZS EV — V2L capable

Tesla does not currently support V2G or V2H through third-party chargers. Tesla's preferred home storage answer is the Powerwall. That may change, but for now a Tesla household looking for backup is better served by a dedicated home battery than by V2H.

Is It Worth It Right Now?

For most UK EV owners: not yet. The reasons:

1. Cost: the Wallbox Quasar 2 lands around £6,100 before installation — more than five times a standard home charger. Payback on energy savings alone is long.
2. Vehicle compatibility: only a handful of EVs support bidirectional DC charging. Tesla isn't among them.
3. Limited tariff options: V2G tariffs like Octopus Power Pack exist but remain in pilot, with tight availability.

What you can do now

For buyers specifying a charger today and wanting optionality on V2G, a V2G-ready charger like the NexBlue Point 2 or Zaptec Go 2 is the sensible hedge. The ISO 15118 communication is already there; V2G could arrive via firmware — at a fraction of the cost of a bidirectional DC charger.

For now, the most cost-effective way to treat the EV as a home energy asset is a standard smart charger, solar and an off-peak tariff. Our solar charger guide covers the options.

What's Coming Next

The V2G landscape in the UK is moving quickly:

• More manufacturers are adding bidirectional support
• Octopus Energy's Power Pack V2G tariff is expanding
• The 2025 commercial V2G mandate will push infrastructure investment
• Prices will come down as competition widens

By 2027–2028, V2G could be standard on mainstream home chargers. For now, it's a technology to watch — and one to keep optional via V2G-ready hardware when specifying a new charger today.

See our charger comparison for the current V2G-ready options or the best EV tariffs guide for where the tariff side is heading.