What Is Vehicle-to-Home?
Vehicle-to-Home (V2H) is bidirectional EV charging in reverse — instead of only pulling power into your car, a V2H system lets you push stored energy out of the battery and into your home's circuits. Think of your electric car as a 40–80 kWh battery on wheels that happens to be parked on your driveway for 20+ hours a day.
The concept sits alongside two related technologies: V2G (Vehicle-to-Grid), which exports power back to the National Grid, and V2L (Vehicle-to-Load), which powers individual appliances via a socket on the car. V2H is the most practical for most homeowners — no grid export licence required, no smart meter dependency, just your car and your house.
V2H is not the same as a home battery like a Tesla Powerwall. Your car battery is much larger — but it's also your transport. The key question is always: will the car be charged enough when I need to drive?
Which EVs Support V2H in the UK?
As of August 2026, true V2H capability in the UK is limited to a handful of vehicles. The technology requires a CHAdeMO or bidirectional CCS port — most mainstream EVs only support one-way AC/DC charging.
UK-Compatible V2H Vehicles (2026)
If you're considering an EV purchase with V2H in mind, the Nissan Leaf remains the most proven option in the UK. For a broader look at EV running costs, see our guide on EV charger installation costs.
What Does a V2H System Cost?
A V2H installation in the UK typically involves three components: the bidirectional charger unit, installation labour, and any necessary consumer unit upgrades.
| Component | Typical Cost | Notes |
|---|---|---|
| Bidirectional charger unit | £2,000–£4,500 | Wallbox Quasar 2, Indra V2H, Ohme |
| Installation labour | £500–£1,200 | OZEV-approved installer required |
| Consumer unit upgrade | £300–£800 | If existing board is incompatible |
| Total installed | £3,000–£6,500 | Most UK installs land at ~£4,500 |
There is currently no dedicated government grant for V2H in the UK (the OZEV EV charger grant covers standard chargers only). However, if you pair V2H with solar panels, the combined system may qualify for 0% VAT on the installation. See our solar panels guide for the full picture.
How Much Can V2H Save You?
The savings maths depends entirely on your tariff. V2H only makes financial sense if you can charge cheaply (overnight off-peak) and discharge during expensive peak periods — or avoid drawing from the grid at peak rates altogether.
Example: Nissan Leaf 40kWh on a Time-of-Use Tariff
* Assumes full 40kWh discharge daily — unrealistic in practice. Real-world savings after battery degradation, partial discharge, and driving needs: typically £400–£900/year.
To maximise V2H savings you need the right tariff. Our best energy tariffs guide covers time-of-use deals that make V2H viable — and why comparison sites often miss the best options.
Battery Degradation: The Hidden Cost
Every charge/discharge cycle degrades your EV battery slightly. Using your car as a daily home battery accelerates this — potentially reducing range and resale value over time. Nissan and Mitsubishi have engineered their V2H-compatible models to handle bidirectional cycling, but third-party V2H adapters on non-approved vehicles carry real warranty risk.
Before installing V2H, confirm in writing with your manufacturer that bidirectional discharge will not void your battery warranty. Most manufacturers outside Nissan and Mitsubishi currently do not support it.
This is where pairing V2H with a dedicated home battery storage system makes sense for high-usage households — use the home battery for daily cycling and reserve the car battery for backup or occasional peak shaving.
V2H vs Other Home Energy Options
V2H is one piece of a larger home energy puzzle. Here's how it compares to the other main options available to UK homeowners right now:
Home Battery (e.g. Powerwall)
✓ Dedicated cycling, no range impact, always available
✗ £8,000–£14,000 installed, separate unit
Home battery guideSolar + Battery
✓ Free daytime generation, best long-term ROI
✗ High upfront cost, weather dependent
Solar panels guideAI Energy Management
✓ Optimises all devices automatically, no hardware
✗ Savings smaller without storage
AI HEMS guideV2H FAQ
Can I use my electric car battery to power my house in the UK?
Yes — with a compatible bidirectional EV and a V2H charger. As of 2026, the Nissan Leaf (CHAdeMO), Nissan Ariya, and Mitsubishi Outlander PHEV are the most widely supported vehicles in the UK.
Does V2H void my EV warranty?
It depends on the manufacturer. Nissan and Mitsubishi explicitly support V2H on compatible models. Most other manufacturers currently void the battery warranty for bidirectional discharge — always confirm in writing before installing.
What is the difference between V2H and V2G?
V2H sends power from your EV to your home only. V2G exports power back to the National Grid, potentially earning export payments. V2G requires additional grid approval; V2H is simpler and available now.
Is V2H worth it if I don't have solar panels?
Possibly — if you're on a time-of-use tariff with a large overnight/peak price spread. Without solar, you're purely arbitraging tariff rates, so the savings ceiling is lower. With solar, V2H becomes much more compelling.
Ready to Cut Your Energy Bills?
Whether you're exploring V2H, solar, or just want a better tariff — we can help you find the right combination for your home.