Switching to an electric vehicle (EV) is a big step toward cleaner, more affordable motoring. Compared to petrol or diesel cars, EVs are already cheaper to run for most UK drivers. But when it comes to understanding the cost of charging, things aren’t always crystal clear.
This guide breaks down the variables that affect home charging costs and helps you estimate what it might cost to run your EV. If you're already charging at home or planning to install a charger, this page gives you the key facts, figures, and practical tips to help reduce your costs.
How Much Does an Electric Car Cost to Charge?
Charging cost is influenced primarily by the battery size and your electricity rate. Here’s the formula:
EV Charging Cost = Size of Battery (kWh) x Cost of Electricity (pence per kWh)
E.G: a 60kWh battery and an electricity rate of 28p/kWh = 60 × 28 ÷ 100 = £16.80
Try our interactive calculator for a quick estimate:
Using a UK average electricity rate of 17.2p per kWh (2020):
- Tesla Model S (100kWh) = approx. £17.20 for a full charge
- Nissan Leaf (40kWh) = approx. £6.88 for a full charge
These are full-capacity estimates; in reality, most EV owners charge from partial levels.
Cost Per Mile for EV Driving
Another useful calculation is cost per mile:
Cost Per Mile = Cost of Full Charge (£) ÷ Vehicle Range (miles)
- Nissan Leaf: 151-mile range → approx. 5p per mile
- Tesla Model S: 390-mile range → approx. 4p per mile
EV Charging Cost Calculator
Estimated Cost: £--.--
How Do EVs Compare to Petrol Vehicles?
- BMW M5: 15 gallons at £5.45 = £81.75
- Range: 368 miles → approx. 22p per mile
- VW Golf 1.5L: 11 gallons = £59.95
- Range: 563 miles → approx. 10p per mile
Even a mid-range petrol car may cost nearly double to run, while high-performance petrol cars can cost over four times more per mile than EVs.
What Affects Charging Costs at Home?
Understanding what drives your home charging costs can help you manage and reduce them. While EVs remain one of the most affordable ways to power your daily travel, several variables influence exactly how much you'll spend when charging at home:
| Electricity Tariff and Time of Use: |
|---|
| The rate you pay per kWh can vary significantly depending on your tariff. Standard rates tend to be higher during the day, while Economy 7 or EV-specific tariffs offer lower rates overnight. Charging during off-peak hours can lead to substantial savings over time. |
| Charging Speed and Battery Efficiency: |
| Faster charging units like 22kW chargers can draw more power over shorter periods. While convenient, they may not always be the most economical unless you have access to cheaper tariffs. Vehicle battery efficiency also affects how much electricity is needed to reach full charge. |
| Energy Supplier and Regional Pricing: |
| Energy costs vary by location and supplier. Some providers offer better rates in specific regions or bundled deals for EV drivers, which can influence the total cost. |
| Smart Charger Features and Renewable Integration: |
| Chargers with built-in energy monitoring, solar compatibility, or load balancing can optimise when and how power is delivered to your vehicle. These features help align charging patterns with cheaper rates or renewable energy availability, reducing overall cost. |
Key Factors Summary:
- Electricity tariff and time of day charging occurs
- Charger speed and your vehicle's energy efficiency
- Your energy supplier's rates and your UK region
- Smart features or renewable energy integration in your charger
By considering each of these factors, you can better plan your charging schedule and select the right equipment to keep long-term costs low.
Ways to Reduce Your Home EV Charging Costs
1. |
Charge During Off-Peak Hours: Utilise Economy 7 or EV-friendly tariffs for cheaper overnight rates. |
|---|---|
2. |
Install a Smart EV Charger: Smart units from brands like Zappi, Wallbox, and Project EV allow scheduled charging, load management, and integration renewables. |
3. |
Choose the Right Tariff: Many suppliers now offer EV-specific plans, fixed-rate tariffs, or cost calculators tailored to EV usage patterns. |
How to Maximise Savings on EV charging?
Home charging offers greater control, savings, and convenience. With smart planning and the right equipment, running costs can stay impressively low.
Browse our EV chargers or speak with our team to learn more about installation, energy plans, and reducing your long-term EV costs.
Browse EV Products available with Next Day Delivery
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SolaX EVC Pedestal 1.4M - EVC-PEDESTAL£74.18 £61.82 -
Aurora Seren EV Charger 7.4kW 230V - 600000£342.00 £285.00
Smart Charger Brand Comparison
Compare Popular Smart EV Chargers at a Glance
Choosing the right smart EV charger can help you save even more. Here's a comparison of popular models, focused on energy efficiency and smart features:
| Brand | Smart App Control | Scheduled Charging | Solar Integration | Load Balancing |
|---|---|---|---|---|
| Zappi | Yes | Yes | Yes (solar & wind) | Yes |
| Wallbox Pulsar Plus | Yes | Yes | Add-on required | Yes |
| EO Mini Pro 3 | Yes | Yes | With solar gateway | Yes |
| Project EV | Yes | Yes | Add-on available | Yes |
These models all meet UK smart charging standards and can help optimise your charging routine for cost, efficiency, and sustainability.
Find out how much it really costs to charge an EV, with clear guidance on tariffs, battery sizes and smart charging so you can better plan and control your running costs.