Two electric cars and one charger is a recipe for daily arguments about whose turn it is to plug in. As more Yorkshire households go fully electric, dual EV charging at home is one of the fastest-growing requests we handle. But how much does a dual EV charger actually cost in 2026, and what is involved? This installer guide breaks down the real prices and the technical decisions behind charging two cars at home.
How Much Does a Dual EV Charger Cost in 2026?
The cost of charging two cars at home depends on whether you fit two separate chargers or one twin-output unit, and crucially whether your electricity supply can deliver enough power for both at full speed. Here is what to budget in 2026.
| Option | Typical installed cost | Best for |
|---|---|---|
| Two single chargers (load-balanced) | £1,600–£2,400 | Two cars parked separately; flexible siting |
| One twin-socket charger | £1,400–£2,000 | Two cars parked side by side |
| Add second charger to existing one | £800–£1,400 | You already have one charger installed |
| Supply / consumer unit upgrade (if needed) | £600–£1,500 extra | Older or single-phase-limited supplies |
For most homes, two load-balanced chargers come in around £1,600–£2,400 fully installed, assuming a sensible cable run and no major supply work. The single biggest variable is whether your supply needs upgrading.
The Key Issue: Load Balancing and Your Supply
A standard UK home has a single-phase supply rated at 60–100 amps. A single 7.4kW charger draws around 32 amps. Run two at full speed and that is 64 amps before you have boiled a kettle or run an oven — enough to trip the main fuse on many homes. This is why dual charger installs almost always use load balancing: the chargers talk to each other (and to a CT clamp on your supply) and share the available power intelligently, so both cars charge without overloading the house. It might mean each car charges slightly slower when both are plugged in, but they charge safely and overnight that is rarely an issue.
Two Separate Chargers vs One Twin Unit
Two separate chargers give you flexibility — you can site them to suit two different parking spots and choose different models. A single twin-output unit is neater and often slightly cheaper, but both cars must park near it. For most two-car driveways we recommend two load-balanced single units such as a pair of Zappis or Ohmes, because it future-proofs the setup and lets each driver use their preferred app.
Adding Solar to a Two-Car Setup
If you have solar panels, dual charging gets even better: surplus solar can be shared between the two cars during the day. Solar-aware chargers like the Zappi divert genuine excess generation, so on a sunny day you can top up both EVs for free. Our team configures this as part of the install. If you are considering panels too, our solar panel installation service can size a system for a two-EV household.
Do You Need Planning Permission or a Grant?
Home EV chargers are permitted development in almost all cases, so no planning permission is needed for a standard driveway install. The OZEV EV chargepoint grant is still available in 2026 for eligible flat owners and renters, and for those with off-street parking who meet the criteria — we will tell you at survey whether you qualify and handle the paperwork.
A Worked Example: Two EVs on a Standard Home Supply
Take a typical 3-bed semi with a 80-amp single-phase supply and two electric cars driven 8,000 miles each per year. Two load-balanced 7.4kW chargers share the available capacity: when both cars plug in overnight, each draws around 16 amps and tops up fully by morning. When only one car is plugged in, it charges at the full 32 amps. Total installed cost for a pair of Zappis or Ohmes with load balancing comes to roughly £1,800–£2,200, assuming a sensible cable run and no supply upgrade. On a 7p overnight smart tariff, fuelling both cars costs a small fraction of running two petrol equivalents.
When You Might Need Three-Phase Power
Most homes will never need three-phase power for two chargers, because load balancing solves the capacity problem. However, if you want both cars to charge at full speed simultaneously and regularly, or you also run a heat pump and other heavy loads, a three-phase supply upgrade can be worthwhile. This is a larger job involving your network operator and adds cost, so we only recommend it where the usage genuinely justifies it. For the overwhelming majority of two-car households, two load-balanced single-phase chargers are the right, cost-effective answer.
Get a Dual EV Charger Quote
Charging two cars at home is straightforward when it is designed and load-balanced properly by an experienced team. Premier Electrical Renewables is NICEIC-approved and installs dual EV chargers across Yorkshire and Greater Manchester, with local teams for EV charger installation in Leeds and Wakefield. Book a free survey for your dual EV charger installation and we will give you a fixed written price for charging both cars.