How to Charge Your Electric Car at Home

Charging your electric vehicle (EV) at home offers a convenient and cost-effective way to keep your car ready for the road. With the growing popularity of EVs, more homeowners are choosing to install home EV chargers, allowing them to benefit from cheaper and faster charging.

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This guide will walk you through everything you need to know about charging your EV at home, from choosing the right charger to understanding installation and costs.

Key Takeaways

• The best way to charge your EV at home is by using a dedicated wall box charger for faster, reliable, and efficient charging.
• Charging times vary depending on the charger type; a 7kW wall box can charge a 63kWh vehicle in around 10 hours.
• Smart chargers enable scheduling, real-time monitoring, and dynamic load balancing, which optimise energy use and reduce costs.
• Installing an EV charger can cost between £250 and £1,500 for the unit, with installation averaging around £1,000, though grants may reduce the price.

How Does Electric Vehicle Charging Work?

Electric vehicle (EV) charging works by supplying electricity, often from the grid or renewable energy sources, to the vehicle’s battery through a charging station. The process begins when the vehicle is plugged into the charger, which delivers electricity to the battery via a connector. 

The type of charger used determines the speed of charging, with home chargers being slower (typically 3kW to 7kW) and public chargers faster (7kW to 22kW or higher). For example, charging a 63kWh electric SUV with a 7kW wall box could take approximately 10 hours, whereas a 3.6kW wall box could take 20 hours.

The car's onboard system regulates the flow of electricity, ensuring safe charging and preventing overcharging. Many modern chargers offer smart features for monitoring progress and scheduling charging during off-peak hours.

What is the Best Way to Charge an Electric Car at Home?

The best way to charge your electric car at home depends on your needs, the type of charger you choose, and the time you have available for charging. For most homeowners, a dedicated home EV charger (also called a wall box) is the best option. It offers faster charging speeds and more reliability compared to using a regular 3-pin plug.

By setting up a home charger, you can simply plug your vehicle in overnight and have it fully charged by the morning, without worrying about public charging stations.

Types of EV Charger 

The type of charger you choose depends on your vehicle’s battery capacity, desired charging speed, and the power supply available in your home. The main options include:

Standard 3-Pin Plug

The standard 3-pin plug is the slowest method for charging an electric vehicle and should only be used for occasional use. While it’s convenient for short-term or emergency charging, it can take over 32 hours to fully charge most electric vehicles, making it unsuitable for regular use. 

Home EV Charger (Wall Box)

A more efficient and reliable solution, wall box chargers typically offer power outputs between 3.6kW and 7kW. These chargers can reduce charging times significantly; for example, a 7kW wall box could fully charge a 63kWh EV in around 10 hours, offering a safe, cost-effective way to charge your vehicle regularly.

Fast Chargers

Offering speeds between 7kW and 22kW, fast chargers are ideal for reducing charging times. A 22kW charger can give around 60-90 miles of range per hour of charging time, but it requires a three-phase power supply, which may necessitate a costly electrical system upgrade. 

However, not all EVs have the capability to accept 22kW charging, so it's important to check your vehicle's specifications before opting for this type of charger. These fast chargers are more commonly found in commercial settings but can be installed at home for higher charging demands.

For smart, solar-compatible fast chargers, check out UpVolt's range of EV chargers, designed to seamlessly integrate with home energy systems.

How Much Does it Cost to Charge Your Electric Car at Home?

The initial cost of an EV charging point may be high, but the long-term savings along with the environmental benefits of driving an electric vehicle, make it a smart investment. EVs are cheaper to run in terms of fuel and tax and tend to retain their value better than traditional vehicles. Beyond financial benefits, making the switch helps reduce fossil fuel consumption, lowering your carbon footprint and contributing to a more sustainable future.

The cost of charging your EV at home depends on your electricity unit rate and the size of your car's battery. For example, with an average UK unit rate of 25p per kWh (as of October 2024), a full charge for a 60 kWh EV battery would cost around £15.

However, many energy providers offer off-peak or EV-specific tariffs that allow you to charge at night when electricity is cheaper. These rates can be as low as 7p per kWh, significantly lowering your charging costs. If you have solar panels, you can also charge your EV with free solar energy, further reducing your costs.

While public charging stations may seem convenient, they can be more expensive. Fast charging at public stations can cost anywhere between 30p to 80p per kWh. According to RAC, the cost of a 70% rapid charge was around £40 (78.12p per kWh), which would give the EV driver approximately 168 miles.

The Cost of Installing an EV Home Charger

The cost of installing an EV charger in the UK can vary depending on the type of charger and installation requirements. On average, the cost of the charger unit ranges from £250 to £1,500. For slower chargers (2.3kW – 3.6kW), prices typically range from £250 to £500, while a 7kW charger can cost between £450 and £800. 

Installation costs average around £1,000, but with the Electric Vehicle Chargepoint Grant, you may qualify for a discount of up to £350, reducing the cost to £650. Additional charges may apply if your home’s electrical system needs upgrading or if trenching is required to bury cables.

Best Ways to Optimise Your Home EV Charging Experience

To get the most out of your home EV charging experience, there are several strategies you can adopt. These tips will help you save time, reduce costs, and enhance the overall efficiency of your charging setup.

Use a Smart Charger

A smart EV charger allows you to schedule charging during off-peak hours when electricity rates are lower. This can help you save money by taking advantage of cheaper electricity. Many smart chargers also offer real-time energy monitoring, so you can track your usage and make adjustments if needed.

Some smart chargers also feature dynamic load balancing, which ensures that the available power is distributed efficiently across your home’s electrical system. This prevents overloads, allowing you to charge your EV without affecting the performance of other appliances.

Take Advantage of Solar Power

If you have solar panels, you can optimise your home charging by connecting your EV charger to your solar system. UpVolt’s Skygate™ technology takes this a step further by intelligently managing your energy assets, including solar panels, batteries, and EV chargers, to maximise self-consumption of renewable energy. This ensures your vehicle is charged using excess solar power whenever possible, further reducing electricity costs and your carbon footprint.

Charge to Optimal Battery Levels

It’s generally recommended to charge your EV to around 80% rather than 100%, as this can help extend the lifespan of your battery. Many smart chargers let you set charging limits to make this easier.

Regular Maintenance

Ensure that your charger and electrical system are regularly maintained. This includes checking for any wear and tear on cables, ensuring your electrical supply is sufficient for the charger, and keeping the charger clean to prevent overheating.

EV Charger Installation Process

Installing an EV charger requires professional planning and installation for safety and efficiency. Here's what to expect:

1. Site Assessment: A certified electrician assesses your property to determine the best location for the charger and checks if your electrical system needs upgrades.
2. Choosing the Right Equipment: The electrician helps select the appropriate charger based on your power capacity, vehicle type, and future needs, including the option to integrate with solar panels.
3. Electrical Work & Setup: A dedicated circuit for the charger is installed, and if needed, your fuse box or wiring is upgraded to comply with UK safety standards.
4. Testing & Certification: The system is tested to ensure safety and functionality, and you receive certification proving compliance with regulations.
   

Let's Recap

Charging your electric vehicle (EV) at home offers convenience, cost-effectiveness, and efficiency. The best method is installing a dedicated home charger, such as a wall box, which provides faster and more reliable charging compared to a standard 3-pin plug.

Smart chargers add extra value by allowing you to schedule charging during off-peak hours, monitor energy usage, and prevent overloading with dynamic load balancing. By taking advantage of cheaper electricity rates or solar power, you can further optimise your charging experience and reduce long-term costs. 

About UpVolt

UpVolt specialises in providing smart solar energy solutions tailored to UK homes, including solar-optimised EV chargers that seamlessly integrate with your solar system. From planning and system design to professional installation, commissioning, and ongoing support, we offer a comprehensive service to help you achieve energy independence.

Our smart EV chargers support charge rates from 7kW to 22kW, with both local and remote load management to ensure optimal performance. With a variety of charging modes, you’ll have complete flexibility whether charging at home or on the go.

Request your free electric vehicle charging installation quote today!

FAQ

What is the best way to charge my electric car at home?

The best way to charge your electric car at home is by installing a dedicated wall box (home EV charger). It offers faster, more reliable charging compared to a standard 3-pin plug, and can be scheduled for off-peak hours to save on energy costs.

How long does it take to charge an electric car at home?

Charging time depends on the charger type and battery size. With a 7kW wall box, it typically takes 8-12 hours to fully charge an EV, while using a standard 3-pin plug can take up to 32 hours.

What type of charger should I install for my electric car?

For most homeowners, a 7kW wall box charger is ideal, offering a balance of speed and cost. If you need faster charging, you can consider a 22kW charger, but ensure your home’s electrical system can support it and that your car has the capacity to handle the higher charging speed. 

Can I use my solar panel system to power my EV charger?

Yes, if you have a solar panel system, you can integrate it with your EV charger to use renewable solar energy for charging, reducing your electricity costs and dependence on the grid.

Are there government grants available for EV charger installations?

Yes, the UK government offers grants through the Electric Vehicle Chargepoint Grant, which can cover up to £350 of the installation costs, helping to reduce the overall expense of installing a home charger.

Alex Lomax

CEO & Co-Founder

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