How Much Does It Cost to Charge an Electric Car at Home in the UK?

With the increasing popularity of electric vehicles (EVs), many UK drivers are looking for cost-effective ways to charge their cars at home. Charging at home is often the most convenient and affordable option, but how much does it actually cost? Several factors influence the overall expense, including electricity rates, battery capacity, and charging efficiency.

On average, the cost to fully charge an EV at home in the UK depends on the battery size and electricity tariff. Based on the current average electricity price of 30p per kWh:

• A small EV with a 40 kWh battery costs around £12 to fully charge.
• A mid-range EV with a 60 kWh battery costs about £18.
• A long-range EV with a 100 kWh battery can cost up to £30.

If you use an off-peak EV tariff (around 7p per kWh), the cost can be significantly lower, reducing a full charge for a 60 kWh battery to £4.20.

Understanding Electricity Costs for EV Charging

The cost of charging an electric car at home depends on your electricity tariff. In the UK, the average price of electricity is around 30p per kWh (as of 2024). However, some energy providers offer special EV tariffs that provide cheaper off-peak rates, sometimes as low as 7p per kWh during certain hours of the night.

To estimate the cost of charging your EV, you need to consider the battery capacity. For example, if your electric car has a 60 kWh battery and your electricity tariff is 30p per kWh, a full charge would cost:

60 kWh × 30p = £18

If you have an off-peak tariff at 7p per kWh, the cost would be significantly lower:

60 kWh × 7p = £4.20

Cost Variations Based on EV Models

Different EV models have varying battery sizes, which affects charging costs. A small city car with a 40 kWh battery will be cheaper to charge than a long-range EV with a 100 kWh battery. Additionally, factors such as battery degradation and charging efficiency can impact the actual energy consumed during charging.

Home Charging vs. Public Charging

Charging at home is typically much cheaper than using public rapid chargers, which can cost anywhere from 45p to £1 per kWh. While public chargers are useful for long journeys, home charging remains the most cost-effective way to keep an EV powered up for daily use.

How to Reduce Charging Costs

To save money on home charging, consider switching to an EV-friendly electricity tariff that offers lower rates during off-peak hours. Installing solar panels can further reduce costs by allowing you to generate and use your own electricity. Additionally, using a smart charger that schedules charging during the cheapest hours can help optimise savings.

Is It Cheaper to Charge Your Car Overnight?

Many energy suppliers in the UK offer off-peak tariffs that provide lower electricity rates during the night, typically between midnight and 5 am. These tariffs, such as Economy 7 or EV-specific plans, are designed to encourage charging when overall electricity demand is lower. Charging overnight can significantly reduce costs, with some tariffs offering rates as low as 7p per kWh compared to the standard 30p per kWh daytime rate.

To take full advantage of overnight charging, a smart charger can be programmed to start charging when electricity prices are at their lowest. This not only saves money but also helps to reduce strain on the electricity grid during peak hours. If you’re considering switching to an EV tariff, it’s worth comparing different suppliers to find the best deal for your charging needs.

The cost of charging an electric car at home in the UK varies depending on electricity tariffs, battery size, and charging efficiency. On a standard tariff, a full charge can cost around £18, while off-peak rates can reduce this to as little as £4.20. By taking advantage of EV tariffs, smart charging, and renewable energy options, drivers can make home charging even more affordable.