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EV charger installation at home: what to check before you buy

EV charger installation
Executive summary

Executive summary

A practical checklist for UK homeowners considering an EV charger. Learn what to check about power supply, connector types, smart features, permissions and installers before you buy.

If you are thinking about EV charger installation at home the first question is whether your property is suitable and what you actually need. This guide gives a short, practical checklist so you can compare quotes with confidence and avoid common pitfalls.

Check 1: your home electricity supply and consumer unit

Most UK homes have a single phase supply that comfortably supports a 7kW or 11kW AC charger. Some properties have a three phase supply instead, which affects the type and speed of chargers available. Ask your installer to check your meter, fuse size and consumer unit (fuse board) before you buy: they should confirm whether any upgrades are needed and whether your supply requires a distribution network operator (DNO) application for higher capacity.

Check 2: the right charger power and connector

Decide what charging speed you actually need. Many owners choose a 7kW unit because it reliably recharges overnight for typical daily use. Faster 11kW or 22kW units exist, but your car's onboard charger often limits how fast it will accept AC power. Make sure the charger uses the Type 2 connector standard common across new EVs in the UK, and if you want a tethered cable fixed to the unit or an untethered socket where you use your own lead, make this preference clear to installers.

Check 3: smart features and tariffs

Smart chargers can schedule charging, respond to cheaper tariffs and reduce load when the house needs power. If you already have a time-of-use tariff, or plan to add solar panels and battery storage later, choose a charger that supports smart scheduling, load management and vehicle-to-home or vehicle-to-grid capability if those features matter to you. The Energy Saving Trust explains how smart charging can lower running costs and help integrate home generation.

Check 4: futureproofing and cabling route

Think about where you park now and where you might park in future. A neat, short cable run from the consumer unit to the chargepoint is cheaper and tidier. The UK government's residential chargepoint guidance recommends leaving space for additional chargepoints and providing a clear, unobstructed route for cabling so future upgrades are easier and less costly.

Check 5: permissions, landlord or local rules

If you live in rented accommodation, a flat or a listed building, check permissions first: leaseholders and freeholders often have specific procedures, and some councils and management companies require an application. If you are on-street or have communal parking, local authority schemes or funded options may be available. The Energy Saving Trust lists regional grant schemes, such as those in Scotland, that can reduce upfront cost for eligible households.

Check 6: installer credentials and safety

Use an installer who follows the IET code of practice and who will provide an Electrical Installation Certificate on completion. Look for firms that detail compliance with UK building regulations and relevant technical standards, and get at least two written quotes that explain the work included, hardware model, mounting position, cable runs and any consumer unit or supply upgrades.

Ask these specific questions

  • Will you check the consumer unit and meter before quoting?

  • Is the quote inclusive of any DNO or cable work and of certification on completion?

  • Can the charger be integrated with a smart tariff, solar panels or a battery later on?

  • Do you offer a written electrical safety certificate and commissioning report?

Cost and value considerations

Prices vary depending on cable run complexity, required upgrades and the charger model. Avoid choosing solely on price, since inexpensive installers may omit proper testing, certification or futureproofing. Compare what is included and ask for the full scope of works. If you later add solar panels or battery storage, compatible chargers will let you prioritise self-generated electricity. REST's home battery storage page explains how batteries can interact with vehicle charging.

How to choose and next steps

Begin by arranging a site visit so an installer can assess supply capacity and cable routing. Collect at least two comparable quotes that list equipment, labour and certification, and look for installers who explain compliance clearly and provide an Electrical Installation Certificate on completion. For more on REST's approach to EV work see our EV charging page and our MCS certification standards.

REST note: REST UK is a UK-wide, MCS-certified installer of solar, battery storage and EV chargers, HIES protected and rated 4.3/5 ("Great") on Trustpilot from more than 721 reviews. We supply site surveys, compliant installations and finance options; contact our team for a free quote and a written scope of work before you commit. This article is general guidance and not a substitute for an on-site assessment.

Questions about this topic

Do I need my landlord's or the council's permission to put in a home EV charger?

If you rent or live in a flat, check your tenancy agreement and speak to your landlord or managing agent. Communal or on-street parking may need local authority or management company approval. Private homeowners generally do not need planning permission for a wall-mounted domestic chargepoint, but listed buildings or conservation areas can have restrictions.

Will my current electricity supply actually cope with an EV charger?

Many UK homes can support a 7kW or 11kW charger on a single phase supply. An installer should check your meter, fuse size and consumer unit to confirm whether upgrades or a DNO application are required for your property.

Should I get a charger with the cable built in, or one where I use my own lead?

Tethered chargers have a permanently attached cable, which is convenient and ready to use. Untethered units have a socket so you use your own cable, which can be more flexible if you change cars often. Choose based on convenience, parking setup and personal preference.

If I've already got solar panels or a battery, can the charger work with them?

Yes. Many smart chargers can schedule charging to take advantage of solar generation or cheaper tariffs, and can work with battery systems to prioritise self-consumption. Confirm compatibility with your planned solar or battery hardware before you buy.

Technical accuracy

Sources reviewed

This article was prepared using live source research. Rules, tariffs and product details can change, so the original sources are listed below.

REST editorial standard

Clear guidance, checked against current sources.

Prepared by Russell Andrews at REST UK. Product, finance and regulatory information should always be confirmed for your property and circumstances.

Discuss your property

Turn the guidance into a property-specific plan.

REST UK can assess the roof, electricity use and equipment route before confirming a suitable design.

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