How Much Does it Cost to Charge an Electric Car?
How much does it cost to charge an electric car?
Electric vehicle (EV) charging costs in the UK vary significantly depending on where, when, and how you draw power. While domestic charging provides the most economical method, relying solely on public rapid networks increases operational costs. Managing these charging variables precisely is the most effective way to lower your overall expenditure and maximise vehicle efficiency.
To secure the lowest rates, install a dedicated 7kW home charge point and switch to an EV-specific domestic utility tariff. This allows you to schedule charging securely during off-peak hours when electricity prices drop. Note that installing any domestic EV charging equipment requires a licensed, Part P-qualified electrician to ensure compliance with current UK Building Regulations.
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Key things to know about electric car charging
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Home charging – Costs as little as 3p per mile on an off-peak tariff – install a 7kW wallbox and schedule overnight charging to lock in the lowest rates.
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Public chargers vary widely – kerbside AC units run at 45–49p per kWh, rapid chargers at 53–75p, and motorway ultra-rapid hubs at 79–89p. Use them for top-ups only.
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EVs cost up to 65% less per mile than petrol or diesel – lower day-to-day running costs quickly offset the higher purchase price.
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Government grants – These can cover up to £500 on wallbox installation, and EVs are fully exempt from ULEZ and Clean Air Zone charges.
Charging an electric car at home
Domestic charging is the most cost-effective way to power an EV. The total cost of a home charge depends on three primary variables: your domestic electricity tariff rate per kilowatt-hour (kWh), the vehicle’s total battery capacity, and the efficiency of your charger. Most dedicated domestic chargers operate at 7kW and experience a minor 10% energy loss during the power transfer.
To calculate the exact cost of a full charge, use this straightforward formula: multiply your vehicle’s battery size (kWh) by your tariff’s cost per kWh. For example, charging a flat 60kWh battery on a standard 24.5p per kWh tariff costs exactly £14.70.
3 ways to optimise home charging expenses:
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Switch to an EV tariff – Change to a dual-rate utility tariff that offers cheaper, off-peak electricity rates between midnight and 05:00.
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Use smart scheduling – Program your dedicated 7kW wallbox or vehicle app to draw power only during those specific off-peak hours.
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Install a solar array – Integrate your home charge point with a domestic solar PV system to harvest and use free microgenerated electricity during daylight hours.
Specialist EV tariffs for cheaper home charging
Switching to a specialist EV home energy tariff lowers your running costs by offering cheap overnight electricity rates. Standard UK mains electricity averages 24.5p per kWh, but dedicated EV tariffs drop off-peak rates to around 7p per kWh during set night-time windows. Charging a standard 60kWh battery at these off-peak rates saves you around £10 per full charge. Always ensure your home charge point is installed by a qualified, Part P-registered electrician.
Some examples of specialist EV tariffs include:
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Octopus Energy (Intelligent Octopus Go): 7p per kWh off-peak rate for a fixed 6-hour window (11:30pm to 5:30am).
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British Gas (Electric Driver): 6.9p per kWh off-peak rate for an 8-hour window (12:00am to 8:00am).
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EDF (GoElectric): 8p per kWh off-peak rate for a 5-hour window over weekends and weekday nights.
Home wallbox chargers
A fixed 7kW home wallbox charger powers your EV up to three times faster than a standard 3-pin plug, delivering a full charge overnight. Wallboxes handle continuous high current safely without overheating your domestic sockets, using smart scheduling to automatically lock in cheap off-peak electricity rates. Expect installation costs between £800 and £1,200 including the unit and labour. If you rent or live in a flat with off-street parking, the government's OZEV grant cuts up to £500 off your final invoice. All units must be installed securely by a qualified, Part P-registered electrician.
How much does it cost to charge an electric car at public stations?
Public EV charging costs vary heavily depending on the charger speed (kW), location, and whether you pay via a network membership or pay-as-you-go (PAYG) rates. On-street AC chargers are the cheapest public option but take hours, while commercial rapid and ultra-rapid DC hubs deliver a fast top-up at a premium price.
Signing up for provider memberships or subscription apps typically cuts your charging costs by 10% to 20% compared to standard contactless PAYG rates. Expect to pay significantly more at motorway service stations where high grid connection fees push up network rates.
|
Charger Type |
Speed Rating (kW) |
Average Cost (per kWh) |
Typical Use Case |
|
Slow / Fast |
7kW – 22kW |
45p – 49p |
On-street / Kerbside residential |
|
Rapid |
50kW |
53p – 75p |
Supermarkets / Public car parks |
|
Ultra-Rapid |
150kW+ |
79p – 89p |
Motorway service stations / Hubs |
Motorway rapid charging
Motorway rapid chargers are the most expensive way to power an EV, with premium pay-as-you-go (PAYG) rates hitting 79p to 89p per kWh. Networks charge this premium because of high commercial grid connection fees and the convenience of high-speed power delivery while on the road. Only use these chargers for short 20-minute top-ups to get you to your destination, rather than a full 100% charge.
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High En-Route Rates: Typical ultra-rapid chargers (150kW to 350kW) add around 100 miles of range in 20 minutes but cost up to £34 per session.
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Major Motorway Networks: Main operators found across UK service stations include Moto (GRIDSERVE), Ionity, and bp pulse.
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Plan Routes to Save: Use apps like Zapmap to route via off-motorway hubs or supermarket chargers, where rates drop closer to 50p per kWh.
Tesla Superchargers
Tesla Supercharger network is built for rapid EV charging on long journeys. Selected UK stations are now open to all non-Tesla electric vehicles.
Pricing structure:
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Tesla Owners – Pay the lowest standard per-kWh rate.
- Non-Tesla Drivers – Pay a higher per-kWh rate or a monthly subscription fee to access lower Tesla owner rates.
These superchargers deliver up to 250kW of power, enabling you to plug in, charge up, and get back on the road fast.
Factors that affect EV charging costs
EV charging costs depend on your vehicle’s specification, where you plug in, and your electricity tariff. Track these five factors to keep your running costs down:
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Battery capacity – Larger batteries (measured in kWh) cost more to charge from empty but deliver a longer driving range.
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Charger type & location – Home charging is the cheapest option. Public rapid chargers (DC) save time but cost significantly more per kWh. If you predominantly charge at home, a Type 2 EV charger offers the best balance of speed and cost-efficiency for most drivers.
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Charging speed – High-kW rapid chargers add miles quickly but carry a premium rate compared to slow AC chargers.
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Energy tariffs – Switching to a dedicated off-peak home EV tariff minimises your cost per mile.
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Driving efficiency – Heavy acceleration cuts your miles per kWh, resulting in more frequent, costly charges.
EV charging costs vs petrol and diesel
Electric vehicles (EVs) cost up to 65% less to run per mile than standard petrol or diesel vehicles. Upfront purchase or lease costs are usually higher, but lower day-to-day running costs quickly clear that initial balance. Charging your vehicle at home provides the cheapest rates to protect your profit margins. Current data shows home charging saves you over £1,000 every 10,000 miles compared to running a petrol engine.
Switching to an electric vehicle also reduces your environmental impact. Electric motors produce zero tailpipe emissions, which immediately improves local air quality on your daily routes. You can maximise both your financial and environmental savings by charging overnight with a smart wallbox. This setup automatically draws clean, off-peak grid electricity when national demand and prices are at their lowest.
|
Vehicle Type & Fuel |
Average Cost Per Mile |
Average Annual Cost (10,000 Miles) |
|
EV (Home Off-Peak Tariff) |
3p |
£300 |
|
EV (Home Standard Tariff) |
7p |
£700 |
|
Diesel Vehicle |
14.5p |
£1,450 |
|
Petrol Vehicle |
17.7p |
£1,770 |
UK government incentives and grants
UK government grants and tax incentives provide straightforward financial support to lower the upfront costs of buying and running an electric vehicle. These schemes target vehicle purchases, charger installations, and regional driving fees to help you get the job done affordably.
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Vehicle grants – You can Save up to £3,750 on eligible new electric cars priced under £37,000. Plug-in grants also remain active for commercial vans and taxis, applied automatically at the point of sale.
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Home charger grants – Renters, flat owners, and landlords with off-street parking can claim the EV charge point grant. This covers 75% of installation costs up to £500 per socket.
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Tax and zone benefits – New electric cars pay a minimal £10 first-year rate for Vehicle Excise Duty (VED) instead of full standard rates. EVs also remain entirely exempt from Clean Air Zone and London ULEZ charges, saving you up to £12.50 daily.
How to reduce electric car charging costs
Follow these six straightforward steps to cut your EV charging costs and keep your vehicle running efficiently:
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Charge off-peak at home – Plug in overnight to use cheaper electricity. Set your vehicle or charger timer to draw power only during your tariff's low-demand hours. Pairing this with a solar panel system can cut your cost per kWh further still.
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Install a dedicated wallbox – Standard 3-pin domestic plugs are slow and inefficient. A dedicated 7kW wallbox charges your vehicle up to three times faster and improves safety.
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Review your energy tariff – Switch to a specialist EV home energy plan. Pair it with energy monitors to track exactly when and how much power your vehicle draws, so you can fine-tune your off-peak charging window and secure the lowest cost per kWh.
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Compare public networks – Download charging apps before you travel. Compare network memberships to avoid high guest rates at public rapid chargers.
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Drive efficiently – Avoid heavy acceleration and sudden braking. Smooth driving maximises your miles per kWh and reduces your total charging frequency.
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Claim available grants – Check your eligibility for the UK EV chargepoint grant to save up to £500 on home installation costs.