Home EV charger installation: a complete guide
As more households switch to electric vehicles, a home charging point has become one of the most requested electrical upgrades. This guide covers what you need to know before installing one.
Why install a home EV charger?
Public charging is convenient occasionally, but it’s usually slower to access and more expensive per mile than charging at home overnight. A dedicated home charger also charges significantly faster than plugging into a standard three-pin socket, which isn’t designed for sustained high-current charging.
Types of home EV chargers
Tethered chargers Come with a fixed cable attached to the unit. Convenient for daily use since there’s no separate cable to store, though the cable type must match your vehicle.
Untethered chargers Have a socket on the unit, and you plug in your own cable. More flexible if you switch vehicles or cable types, though slightly less convenient day-to-day.
Charging speed (kW rating) Most home installations use either 3.6kW or 7kW chargers, with 7kW being the more common choice for full home charging setups, depending on your property’s electrical supply capacity.
What does installation actually involve?
- Site assessment — checking your consumer unit, existing electrical capacity, and the best charger location (garage, driveway, exterior wall)
- Circuit installation — running a dedicated circuit from your consumer unit to the charger location, sized correctly for continuous high-current use
- Charger mounting and connection — fitting the unit and connecting it safely, with appropriate weatherproofing for outdoor installations
- Testing and certification — confirming the installation meets UK wiring regulations before handover
Does my home have enough electrical capacity?
This is one of the most important questions to answer before installation. Older properties or homes with several other high-demand appliances may need a capacity assessment to confirm the supply can safely support an EV charger alongside everything else.
Combining an EV charger with solar panels
If you already have, or are considering, solar panels, pairing them with an EV charger lets you use your own generated electricity to charge your car during the day, reducing reliance on grid electricity. Some charger models also support “smart” or “solar-diverting” charging, which automatically adjusts charging speed based on how much solar generation is currently available.
How much does home EV charger installation cost?
Costs depend on charger type, cable length required, whether any additional electrical upgrades (like a consumer unit change) are needed, and installation complexity. A site visit gives the most accurate picture, since every property’s electrical setup is different.
Frequently asked questions
Can I install an EV charger myself? No — EV charger installation should always be carried out by a qualified electrician due to the high continuous current involved and UK wiring regulation requirements.
Do I need planning permission for a home EV charger? Most home installations don’t require planning permission, though listed buildings or certain conservation areas may have additional considerations.
Can an EV charger be installed alongside an existing solar system? Yes, in most cases an EV charger can be added to a property that already has solar panels, and can often be configured to prioritise using solar-generated electricity.