How much does an electric car increase your electric bill

• Some energy suppliers offer super-low energy rates for EV drivers, so your monthly energy bill will go up less than 5%
• At 5p/kWh on an EV tariff, topping up with 75kWh costs just £3.75
• If you have a standard energy tariff, a 5-10% increase is possible
• Calculate charging costs by multiplying power draw (kWh) by your kWh tariff rate
• A 5% increase translates to an extra £4.00 per month on an £80 bill
• Even with the electricity bill increase, you will save a small fortune on petrol/diesel

Charging at a standard electricity tariff rate, you will see a 5% to 10% increase in your electricity bill, depending on how often you charge at home.

However, if you have an Octopus Energy EV tariff or similar, your monthly electricity bill will go up less than 5%.

According to the Department for Business, Energy & Industrial Strategy (BEIS), the average price per kWh in the UK is 17.2p/kWh. However, on an Economy 7 tariff, the average rate for off-peak electricity is only 14p/kWh. Even lower rates are available for set hours per night with an EV tariff, with Octopus Energy charging just 5p/kWh.

You can calculate how much an electric car will increase your electricity bill, by taking the power you draw (kWh) and multiplying it by your kWh tariff rate. For example, at 17p per kWh, topping up with 40kWh costs £6.80, and at 5p/kWh, that drops to a super-low £2!

You can take advantage of cheap electricity rates by installing a smart charger and setting it to only charge below a kWh price, or on a schedule.

Pricing up the cost of charging at home

Thanks to free supermarket chargers, many EV drivers rarely charge at home, helping to keep running costs extremely low.

Thankfully, when you do plug in at home, you’ll pay peanuts for a charge.

For example, with EDF, you will pay as low as 4.5p/kWh on their EV tariff. Topping up with 60kWh at that price costs just £2.70.

Even if your energy tariff rate is on the high end of 20p/kWh, you’d only pay £12 to top up with 60kWh, but most people pay way less for electricity.

Your electricity tariff will have a quoted kWh rate and this can be used to calculate how much it costs to charge your electric vehicle.

Here’s how to do it – multiply the battery capacity (kWh) by the kWh tariff rate and you’ll land on the cost of charging from 0-100%. Here’s the formula:

Battery capacity (kWh) x kWh tariff rate = charge cost

Alternatively, you can estimate the total kWh you’ll top up with at home and multiply that by your kWh tariff rate.

Tips to keep home charging costs down

Charging costs at home are determined by how much power you consume and the cost of that energy.

Therefore, it pays to look at the right tariffs.

• Octopus Energy has a special tariff for EV drivers that costs 5p/kWh for four hours every night. Best of all, the energy is 100% renewable.
• EDF Energy also has a special tariff for EV drivers, with an even lower rate of 4.5p/kWh for five hours every night.
• Ovo Energy has Ovo Drive with a standard tariff rate of 18.4p/kWh and a 5p/kWh anytime rate for electric vehicles.

Cheaper electricity prices are also available on Economy 7 tariffs. With an Economy 7 tariff, your electricity will be charged at two rates – a day rate and a night rate. The cheaper rate is the night rate, which can be as low as 13p per kWh.

Switching energy suppliers for a better EV tariff can also save money. A tip I can offer from experience is to compare tariffs a month before you renew and buy the best deal then because energy comparison sites have a nasty habit of increasing prices closer to the renewal date. Compare multiple sites for the best deal.

Best smart chargers for scheduling

• Sync EV – this small home charger charges at 7.4kW with scheduling and RFID. Read our Sync EV charger review.
• Indra Smart PRO – one of the best smart chargers on the market with scheduling, tariff integration and solar support. Read our Indra Smart PRO review.
• Zappi v2 – big but solid, with an in-built display and excellent renewable feed-in support. A popular choice, tethered and untethered. Read our Zappi v2 review.

Overall

Your energy bill will probably increase 5-10% per month, which is significantly less than the cost of filling up with petrol/diesel.

Happy charging!

How much does it cost to charge an electric car?

The cost of charging your electric car at a public charge point depends on the charge point network and the location of charge points. Many local authorities offer a pay per session approach to on-street chargers. Occasionally they can be free to use if you have access to a network subscription

Public charge point costs also vary depending on the power rating and whether it's slow (lamppost charging), fast (Car parks) or Rapid (Motorway service stations).

Rapid charge points are typically found at motorway service stations and can also be free for certain drivers but are generally seen as one of the more expensive options. In essence, because they offer a faster charge (drivers can typically charge an electric car to 80% in 20-40 mins) and greater convenience, they tend to come at a premium. 

Pod Point rapid chargers cost 23p/kWh at Lidl and 24p/kWh at Tesco, which is about £6-7 for 30 minutes of charging (about 100 miles of range).

Cost of charging electric cars at public stations

If you are a Tesla owner, then the Tesla Supercharger Network has points across the UK which are often free to use for older vehicles. Newer Tesla owners, who bought their vehicle after January 1st 2017, may only receive a set number of free hours of charge. According to Tesla, where possible, Tesla owners are billed at 26p per kWh (kilowatt-hour). In other areas, they bill per minute. When billing per minute, there are two tiers to account for changes in charging speeds, called “tier 1” and “tier 2”. Tier 1 is 60 kW and below and tier 2 is 60 kW and above. Tesla advise that tier 1 is half the cost of tier 2. 

Certain Model S and X vehicles ordered before November 2, 2018 receive 400 kWh (~1,000 miles) of Supercharger credits annually. Please consult the manufacturer if you are in doubt.

For non-Tesla owners, charging fees vary depending on the network you use. Registration, subscription and connection fees may apply. Take a look at Zap-Map or an overview of UK’s main EV charging networks.

Electric car charging cards

In addition to smartphone apps, radio frequency identification (RFID) electric car charging cards are provided by some of the major UK public charging networks, such as Polar, GeniePoint, Ecotricity, Shell Recharge and ChargeYourCar. To use public charging points, you'll need to register with a membership scheme before use.

Zap-Map can help identify which charging schemes charging points belong to. There are alternative maps you can use too, here's a few to get you started:

• Source London
• ChargePlace Scotland
• National Chargepoint Registry
• Open Charge Map
• ChargeYourCar

Did you know?

The UK government has announced that it will be "providing £500 million over the next five years to support the rollout of a fast-charging network for electric vehicles, ensuring that drivers will never be further than 30 miles from a rapid charging station.".

Book your extended test drive with Turo

Turo is the world's largest car-sharing marketplace – think Airbnb for your car.

We’ve teamed up with Turo to bring you this exclusive offer: 15% off your first Turo trip

Enter TESTDRIVEUK15 at checkout

Cost of charging an electric car at home

Charging your electric car at home is the main charging option for most EV owners. It's important to be on the best home energy tariff to keep this cost as low as possible because the cost of charging will be included in your normal electricity bill.

How much charging costs will depend on the amount of charging you do, the type of charger you have and also how much you use public charging.

The cost of installing a home charge point is around £1,000 but with the Office for Zero Emission Vehicles (OZEV) grant, you could reduce the upfront cost by up to £350. However, unless you live in a flat or rental accommodation, you won't be able to claim this grant after 31st March 2022.

Read more about government grants

Electricity tariff costs

Before you get an electric vehicle, you may want to think about how it will impact the cost of your home electricity bill. For instance, if you travel 8000 miles per year in your car, this might equate to around 2800 kWh of additional electricity on your yearly bill if 1 kWh equals 3.5 miles. Therefore it pays to look for the right energy tariff.

For example, you might want to look at off-peak prices, as many energy companies offer lower electricity prices at night when the demand on the grid is reduced and energy prices are cheaper. Another thing to consider is the number of off-peak hours available to charge your electric car. If for instance, you own a Tesla Model S with a 100 kWh battery, the charging time will be greater than a Renault Zoe with a 30 kWh battery. Therefore, you might want to look for a tariff which offers longer off-peak charging periods.

Renewable electricity tariffs for EV drivers

Power your electric car and home with our choice of GoElectric EV tariffs.

Sign up to the single-rate version with one fixed price all-day. Then once you have a compatible smart meter, you can choose to move to one of our two-rate versions and benefit from cheaper prices during the off-peak times. 

Get EV tariff

On the road costs for electric vehicles

Reduce costs with government schemes

The UK government want more people to go electric and are supporting people to afford the switch.

To help with the upfront costs of buying an electric vehicle and installing a home charging point, there are a few different government grants available. 

Learn more about grants and schemes

Electric car road tax costs

Now that vehicle tax is based on carbon dioxide emissions, pure electric cars are exempt from paying for the first year.

Subsequent years are also free, unless your electric car was over £40,000 in which case you’ll still pay a lower tax than petrol or diesel cars for the next 5 years.

Read more about tax benefits

Electric car maintenance costs

As all drivers will know the older a car is the more servicing it requires. Luckily electric cars have fewer moving parts so naturally this means fewer things to go wrong.

Many leasing companies and manufacturers also offer maintenance packages for an additional cost to help cover any unforseen issues.

Learn more about maintenance

Electric cars vs petrol cars

There are a number of differences between electric and petrol or diesel cars. One of the key benefits is the cost to fill up.

With the average UK electricity price sitting at around 17.2p per kWh and if you assume an electric car will travel 3.5 miles per kWh on average, to travel 100 miles would cost around £5 or 4.91p per mile.

However, a petrol car would cost around £12 or 12p per mile if fuel cost £1.34 per litre and we assume the UK’s average new car fuel consumption in 2019 was 49.2 miles-per-gallon for petrol cars. If you have a cheaper fixed tariff, then it's likely the cost to fill up your electric car will be cheaper still.

The above is only an indication and depending on where you live, the prices you pay for both electricity and fuel and the vehicle you own may increase or decrease these savings.

Learn more about the benefits of electric cars

How much is the Congestion Charge?

As of April 2019, electric vehicles are eligible for an exemption form both the London Congestion Charge and the Ultra Low Emission Zone (ULEZ) charge.

In order to qualify for these exemptions, drivers will need to register their electric vehicle with Transport for London (TfL) at a cost of £10, which needs to be renewed each year.

The Congestion Charge zone runs every day, between 07:00-22:00 (except Christmas Day). Unregistered vehicles will need to pay £15 each day you drive within the boundary. 

The Ultra Low Emission Zone, by contrast, runs 24 hours a day, seven days a week (except Christmas Day), within the same area of central London as the Congestion Charge. Most vehicles that aren't registered will have to pay £12.50 per day. Although heavier vehicles, such as lorries, may need to pay up to £100 per day.

That means a typical daily charge for an unregistered car to drive in London is £24 per day. Register an electric vehicle today to avoid paying more than you have to.

Electric vehicle solutions for business

With expert advice, a selection of charge points, vehicle leasing and energy supply all under one roof, the move to electric vehicles has never been easier.

There are cost benefits to your business going electric. From fuel savings to tax incentives and financial benefits.

See how much your business could save by making the transition to electric vehicles.

Learn more about electric cars and costs

Understand electric car batteries

Discover all you need to know about electric car batteries. How they work, to how much they cost to replace and how they're recycled.

See how batteries work

Sign up for updates on electric cars

Stay up-to-date on electric vehicles and receive all the latest offers, advice and exclusive content from EDF and our partners.