Installing an EV Charger at Home: OZEV Grants, Costs and What to Expect

If you own an electric vehicle or are considering buying one, installing a dedicated home charger is far more convenient than relying on public charging networks. The good news is that the government's OZEV grant scheme can cover a significant portion of the cost. Understanding your options, eligibility and what the installation process involves will help you make an informed decision.

Types of EV Charger and Socket Options

When you start looking at home charger installation West Sussex residents will encounter two main charger types: tethered and untethered.

A tethered charger has a cable permanently attached to the unit. This is convenient because the cable is always there when you need it, and you simply plug it into your vehicle. An untethered charger has a socket only, and you supply your own separate cable. This option offers flexibility if you want to keep a cable in your car or use different cables for different situations.

Both types use Type 2 sockets, which is the standard connector for domestic EV charging in the UK. This ensures compatibility with the vast majority of electric vehicles on the road. The choice between tethered and untethered usually comes down to personal preference and space considerations around where the charger will be mounted.

Charge points come in different power outputs too. A typical domestic charger delivers 7 kilowatts, though some higher-specification models offer up to 22 kilowatts. The 7 kilowatt option is the most common for residential installations and usually takes between six and ten hours to fully charge a battery from empty, depending on the vehicle.

OZEV Grant Eligibility and How to Apply

The Office for Zero Emission Vehicles (OZEV) administers a grant programme that can help with the cost of installing an EV charge point at home. To be eligible, you must meet several criteria. Your vehicle must be fully electric or a plug-in hybrid registered after 1 January 2017, and you must own or have regular access to off-street parking such as a driveway or allocated parking space. You cannot be applying for a charger at a property you are renting out, and the property must not have received an OZEV grant in the previous four years.

The grant currently covers a substantial portion of installation costs, though it does not cover the entire expense. You will typically need to pay the balance yourself. The application process begins with contacting an approved installer. Your installer will handle much of the paperwork and can advise whether your property qualifies before you commit to the project. They will also submit the application on your behalf and liaise with the grant administrators.

Timing matters. You should apply for the grant before installation begins, as work undertaken before approval will not be eligible. Once your application is approved, the installer can proceed, and the grant will be paid either to you or directly to the installer depending on the scheme's current arrangements.

Electrical Upgrades and Bonded Earthing Requirements

Before a charge point can be installed, your home's electrical system must be assessed by a qualified electrician. This is not just a formality. Your main consumer unit (fuse box) needs to have sufficient capacity to safely handle the additional load of the charger. Many older properties in the area still have 60 or 80 amp services, which may struggle with a 7 kilowatt charger drawing 32 amps. An upgrade to a 100 amp service or higher might be necessary.

A crucial and often overlooked requirement is bonded earthing. This is a safety measure that ensures all metallic components around the charger are properly earthed. This includes the mounting bracket, any metal pipes or cable trays nearby, and the structural elements of any carport or garage. Bonded earthing protects against electric shock and equipment failure. Only a qualified electrician experienced in EV charger installations will know exactly how to implement this correctly for your specific property.

Many properties also need new circuit protection installed, and some older wiring may need upgrading to handle the charger's power demand safely. These works should only be undertaken by someone who is fully competent and ideally accredited through schemes such as NICEIC or NAPIT. This is why choosing a qualified installer matters so much. An installer familiar with EV charge point installation will have encountered these scenarios many times and can advise whether upgrades are essential or optional.

Installation Timescales and What to Expect

Once your application is approved and any electrical upgrades are completed, the actual charger installation is usually straightforward and can take a single day, depending on the complexity of your installation. If significant electrical work is needed first, the whole project from start to finish might span two to four weeks.

The installer will mount the charger to an external wall, typically close to where you park. They will run the necessary cabling from your consumer unit to the charger, installing appropriate circuit protection and safety devices along the way. They will test everything thoroughly before handing over the system to you.

Charging Times and Running Your Charger

Understanding how long charging takes helps you plan your usage. A 7 kilowatt charger adds approximately 25 to 30 miles of range per hour of charging, though this varies by vehicle model and battery size. A small car with a 40 kilowatt hour battery might charge fully in six to eight hours, whilst a larger vehicle with a 60 kilowatt hour battery could take eight to ten hours. Many people charge overnight, ensuring the vehicle is ready each morning.

The cost of electricity will vary depending on your tariff, but a full charge typically costs between £2 and £4 at current rates, making it considerably cheaper than petrol or diesel.

Get in Touch

If you are considering EV charge point installation and want to understand whether you might qualify for an OZEV grant, speak with a qualified installer who can assess your property and walk you through the process. Visit ETSE Compliance to find out more about their home charger installation services and how they can help you navigate the grant application and installation journey.