How much does it cost to charge an electric car? | Guide | Smart Home Charge

How much does it cost to charge an electric car?

One of the biggest attractions of owning a plug-in electric car is that they are cheap to run. When charging at home you will be sure of the cost of the electricity but when charging out on the road, with all the different rates and charging tariffs, you could be paying up to three times more.

 

The average cost to charge an electric car

One of the first things people ask when it comes to owning and charging an EV is: "What does it cost to charge an electric car?" or "How much would it cost to charge an EV?". The running costs of an electric vehicle are significantly less than an internal combustion engine car. Depending on the vehicles you are comparing, the pence per mile cost can drop from as high as 20p per mile for a petrol car to nearly 5p per mile for an electric vehicle.

This is based on charging your EV at home on a standard electricity tariff, but the savings can be even greater if you switch to an EV-specific tariff. You can see some examples of these tariffs at the bottom of the page. To work out the cost, simply check the size of the battery (e.g. 40kWh) and multiply this by the cost of the electricity (pence per kWh). This will give you the cost of a full charge, although it will be very rare that you will need to charge from zero to full - most of the time you will just need to "top up" the battery to give you enough range for the next day or two.

 

Charging on the road

On the road charging, such as at motorway service stations or using a public charging point, is more expensive than at home, but is still a good deal cheaper than a petrol or diesel car. In addition, most drivers' journeys are significantly less than the range of electric vehicles, so most EV owners will only need to charge at home. 

Some public chargers are free, but most will either charge a flat fee (like the Ionity chargers in the picture above) for accessing them or will be priced per kWh you use. Where there is a flat fee for the public charger, it's best to get as much charge as possible to bring down the cost per mile. 

 

Keeping the electric car electricity cost down

Choose a home energy tariff that's favourable to EVs

Electric cars are cheaper to run. Full stop. However, you can maximise your savings by switching to an energy provider or tariff that is aimed at EV drivers. For example, the Octopus Energy Go tariff offer four hours of electricity for just 5p per kWh between midnight and 4am. British Gas, OVO, EDF and more also offer EV-specific tariffs. 

Although there are numerous supermarkets, on-street chargers and operators who still offer free charging, prices are creeping up. We recommend to all our customers that installing a dedicated charge point at home is the most convenient and cost-effective way of charging your electric car.

 

Which tariffs are available for EV drivers?

There's a range of energy tariffs available which can help reduce the cost of charging your electric car. It's important to choose an energy tariff that suits your home lifestyle as well as what is best for your vehicle.

We have created a guide on the best energy tariffs for electric car drivers, which will help you make a decision on what is best for you. Find out more about EV energy tariffs in this guide.

 

Real world costs

We tested how much an EV would cost using the Jaguar GO I-PACE app. This is a clever app that lets you "test drive" an electric car without actually driving one. You can use the app in your petrol or diesel car and the app will you feed you back data on how much an electric vehicle would cost you to charge (and how many times a week you'd need to charge at home) based on your driving habits.

We found it really useful - see how our editor Danny Morgan got on with it in the video below:

Cost to charge an electric car at home

Tesla Model 3 Long Range
Charging Cost

Day costs around £10.50

Night costs around £5.25


Take advantage of cheaper electricity tariffs and charge your Tesla Model 3 overnight and drive away fully charged every morning.

Method kW Typical location Charging time (empty to full)
Standard three-pin plug 2.3 Home 25 hours
Dedicated home charging point 7.4 Home 8 hours
Fast charger 22 Offices, commercial buildings, car parks, supermarkets, leisure centres 5.5 hours
Rapid charger Up to 120 Motorway services, car parks 26 minutes
Audi e-tron 50 Quattro
Charging Cost

Day costs around £9.94

Night costs around £4.97


Take advantage of cheaper electricity tariffs and charge your Audi e-tron 50 Quattro and drive away fully charged every morning.

Method kW Typical location Charging time (empty to full)
Standard three-pin plug 2.3 Home 32 hours
Dedicated home charging point 7.4 Home 10 hours
Fast charger 22 Offices, commercial buildings, car parks, supermarkets, leisure centres 6 hours
Rapid charger Up to 120 Motorway services, car parks 28 minutes
Nissan Leaf - Mk2
Charging Cost

Day costs around £5.32

Night costs around £2.66


Take advantage of cheaper electricity tariffs and charge your Nissan Leaf overnight and drive away fully charged every morning.

Method kW Typical location Charging time (empty to full)
Standard three-pin plug 2.3 Home 19 hours
Dedicated home charging point 3.6 Home 12 hours
Fast charger 22 Offices, commercial buildings, car parks, supermarkets, leisure centres 7 hours (with optional 6.6kW on-board charger)
Rapid charger Up to 120 Motorway services, car parks 42 minutes

*The average domestic electricity rate is about 14p per kWh in the UK. Tariffs like "Economy 7" cost as little as 7p per kWh.

Find your perfect electric car charger

Electric car energy tariffs

Scroll to the right to view more info

Provider Tariff Cost / kWh Perks
Green Drive - Nov 2020

Off-peak: 11.84p

Peak: 17.88p

  • 100% green energy
  • Off-peak rate – 12:30am to 7:30am
Fully Charged

Standard: 14.73p

  • 1/2 price Electric Highway charging
  • 100% green energy
  • Discounted home charge point
EV Home

Standard: 16.28p

  • 500 free EV miles as credit
  • 100% green energy
  • Discounted home charge point
EV Driver 3

Standard: 15.66p

Off-peak: 10.60p

Peak: 17.52p

  • 100% green energy
  • Three tariffs depending on meter set-up
  • Standard, Economy 7 & Economy 10 available
Energy Go

Off-peak: 5.00p

Standard: 14.02p

  • Discounted smart home charge point
  • Low off-peak costs
  • 100% green energy
EV Everywhere

Standard: 16.93p

  • Free two year Polar Plus subscription
  • Discounted smart home charge point
  • 100% green energy
Smart Green Electric Vehicle

Off-peak: 4.74p

Standard: 15.23p

  • Low off-peak rate
  • Discounted smart home charge point
  • Scottish Power smart charger app
  • 100% renewable energy
Charge EV

Standard: 15.26p

  • 1,200 free EV miles a year as credit
  • Free pair of Fully Charged Live 2019 tickets
  • Discounted smart home charge point
  • 100% renewable energy

*Costs listed above are intended as a guide only.

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