Home EV chargers: what one costs, the grant, and when it's not worth it

What a home charger does that a 3-pin socket doesn't

Every electric car can charge from an ordinary 13-amp socket using the cable that comes with it. The catch is speed. A 3-pin socket delivers about 2.3 to 2.4kW (Zapmap says about 2.3kW, Which? uses 2.4kW). A dedicated charger on its own circuit delivers about 7kW; Pod’s Solo 3S is rated up to 7.4kW. Which?’s charging-time table gives a 2022 Tesla Model Y 38.5 hours on a 2.4kW 3-pin plug and 12 hours on a 7kW home charger. Pod’s own example is a 60kWh battery taking over 24 hours from a 2.4kW domestic socket.

Speed decides how much of the car you can refill in a cheap overnight window. The off-peak windows on the tariffs below last five to seven hours. In six hours a 3-pin socket adds about 13.8kWh, roughly 44 miles at the 3.18 miles per kWh that Which? measures as the average across every electric car it has tested; a 7kW charger adds about 42kWh, roughly 134 miles. The Department for Transport records the average battery-electric car in England at 9,400 miles a year, about 26 miles a day, which a socket can put back in about three and a half hours. So for average mileage the case for a charger is less about speed than about longer days, big top-ups after a long trip, and safety.

Safety is the other difference. Electrical Safety First says to avoid standard sockets for car charging, because the extended load and duration are likely to exceed what a standard socket and its wiring are designed for; sockets built for car charging are marked BS 1363/EV and should be supplied by a dedicated circuit, and a home charge point must be installed by a registered, competent electrician. Never charge through a domestic multi-socket extension lead and never daisy-chain leads: that is Electrical Safety First’s long-standing advice, and Polestar’s 2026 owner’s manual says the same more bluntly, banning extension cords, multi-way sockets and adaptors outright. MG UK warns that frequent charging from standard plugs can cause overheating.

A proper charger is wired on its own circuit, which Pod’s installation guide says is 40 amps for most 7kW installations, with its own protection in the fuse box, and it cannot be plugged into a 3-pin socket. Since 30 June 2022 every home charger sold has also had to be smart: able to send and receive information and to shift when it charges. That matters for the tariffs below.

What it costs

Which? puts the cost of buying and installing a home charger at typically £500 to £1,200, with a 7kW charger, the right choice for most people, around £900 (February 2026). The spread between a simple and a difficult job is mostly the installation, not the box.

Pod, the national installer we use as a benchmark, prices its Solo 3S at £999 untethered (you plug in your own cable) or £1,049 tethered, with a 6.5-metre cable permanently attached, and both prices include a standard installation. Pod says about 90 per cent of its customers qualify for the standard package. It covers up to 15 metres of cable clipped to the wall from your supply to the charger, up to 3 metres of trunking from the meter to the outside wall, an additional consumer unit if one is needed, with a Type B or C MCB and a Type A RCD (or an equivalent RCBO), and it assumes a fuse box on the ground floor with straightforward access. Pod says a standard installation usually takes about two hours. If Pod cannot fit the charger, or you decline the extra work its survey quotes for, it says you get a full refund. Pod has been a wholly owned subsidiary of EDF since August 2025, which is worth knowing when EDF tariffs appear below.

The grant, if you qualify, comes off that bill: 75 per cent of the cost, capped at £500. On a £999 job, 75 per cent is £749.25, so the cap applies and you would pay £499; on £1,049 you would pay £549. That assumes the charger model is on OZEV’s eligible list and the installer is OZEV-authorised, so check both before you apply. Owner-occupiers of houses with a driveway do not qualify, which the grant section explains.

Watch the subscription framing. Pod’s alternative is £34 a month for 36 months with nothing upfront, an offer it says ends on 1 November. That is 36 × £34 = £1,224 over the term, £225 more than paying £999 outright, and it is a different product with its own service terms, so it is not a like-for-like saving. The same goes for charger-and-tariff bundles: EDF’s Pod Point Plug & Power offers the Solo 3S from £499 upfront tied to a two-year fixed tariff, with exit fees if you leave within two years. Always ask what the charger costs on its own and what the tariff’s day rate, standing charge and exit fee are, then compare.

What pushes the price up after the survey

A quote is a standard-installation price until someone has looked at your house. Five things commonly move it.

Cable runs. Pod’s standard package covers 15 metres. Octopus prices its installs by cable length, with the first 10 metres included, then £125 for up to 20 metres, £250 for up to 30 and £350 beyond that. A meter cupboard at the front and a parking space round the back is the classic long run.

Groundwork. If the cable has to cross a garden or path underground, that is trenching, which Pod’s terms exclude from the standard package; if it is only discovered on the day, the job may pause for a quote. We found no primary source that publishes a fixed price for it, because it depends on the ground.

The consumer unit. A charger needs its own protected circuit. Pod fits an additional consumer unit as part of its standard installation if one is needed; with other installers it can be an extra, so ask whether the quote includes it.

Earthing. A charger used outdoors needs protection against a fault in the street cable, called an open-PEN fault, that can put dangerous voltages on metalwork such as the car’s body. The IET says current regulations require the charging equipment to stop charging and completely isolate the car when it detects one. Pod says its Solo 3 and Solo 3S have this protection built in, so no dedicated earth rod is normally needed, with exceptions such as homes on a TT earthing system, which already need a rod. A charger without built-in protection may need extra work, so ask.

A looped supply. Some homes share their incoming electricity supply with a neighbour, known as a looped supply. Pod’s installation guide has its installers check for a looped supply before fitting, and Electricity North West says that to connect a charger to a looped supply it would need to install a new, separate supply first. Ask the installer to check the meter cupboard at the survey rather than on the day.

Whatever the outcome, your distribution network operator (DNO), the company that owns the local cables, must be told that a charger has been connected. Electrical Safety First says this is required by law, and UK Power Networks says the installer does it on your behalf, within 28 days of the install. Where your supply can carry the load, UK Power Networks and Electricity North West both say there is no charge from them. What does cost money is asking for more supply than you have: Electricity North West puts the average cost of upgrading to three-phase power, rated at 80 amps per phase, at £5,370, and Which? says a 22kW home charger needs a three-phase connection, which most homes do not have. For almost every household, 7kW on the single-phase supply you already have is the right answer.

The OZEV grant: who gets £500 and how

The Office for Zero Emission Vehicles (OZEV) runs the home chargepoint grant in two household versions. Since 1 April 2026 each pays 75 per cent of the cost of buying and installing one socket, up to £500; it was £350 before that date, and some installer pages still say so. The government says the higher figure covers almost half the cost of a typical installation. Funding is confirmed to 31 March 2027, and OZEV says the grants have been extended for a final year; it reserves the right to end or change the schemes and aims to give four weeks’ notice.

Version one is for flats and rented homes. You qualify if you own and live in a flat (shared ownership counts) or you rent a residential property, you have your own private off-street parking space, and you own or use an eligible vehicle. OZEV’s grant page says it covers plug-in battery electric and hybrid vehicles, and a car on order that you will receive within three months counts. You do not qualify if you own and live in a house (unless it has been converted into flats and you live in one of them), if you are a lodger in a home where the landlord lives, if you are moving house or planning to, if you have already claimed this grant or its predecessors (the Electric Vehicle Homecharge Scheme or the Domestic Recharge Scheme), or if a charger is required by law anyway, as in a new build.

Version two is for households with no private off-street parking, owners and renters alike, that fit a permanent cross-pavement channel to charge a car parked on the street. You must not have private and exclusive access to a driveway, garage or residential car park. Same money, same 31 March 2027 deadline, but you need your highways authority’s consent for the channel, and temporary cable covers or mats do not count. OZEV describes the grant as 75 per cent off the cost to buy and install the socket, so budget for the channel separately, and it gives you no right to the parking space outside your house. More on channels below.

Landlords have a separate version: 75 per cent up to £500 per socket, up to 200 sockets a year, for landlords registered at Companies House or for VAT. If you rent and your landlord will not sign the permission for your own application, this is the page to send them.

How it works. Get a dated quote from an OZEV-authorised installer for a charger on OZEV’s eligible model list (last updated on 22 September 2026); gather written permission from your landlord, freeholder or property manager, a utility bill in your name and, if renting, your tenancy agreement; then apply online. Do not have the charger fitted until OZEV confirms you are eligible. OZEV’s initial estimate for its new application platform, which opened on 1 April 2026, is up to 10 working days to assess applications. After the install the installer claims the grant and OZEV pays it to them, so it comes off your invoice rather than back to you.

Smart charging rules and cheap overnight tariffs

Since 30 June 2022 a home charger cannot legally be sold unless it is smart. The regulations require it to be able to send and receive information and change when or how fast it charges, to come pre-set to charge outside peak hours, defined as 8am to 11am and 4pm to 10pm on weekdays with no peak at weekends, and to start each charge with a random delay of up to 10 minutes so that thousands of cars do not switch on in the same second. You are offered the choice to accept, remove or change the default hours the first time you use it, you can override them at any time, and you can cancel the delay. Smart by default is not compulsory off-peak charging; it is a setting you control.

The saving is in the tariff, and a smart charger makes it easier to use fully. Ofgem’s price cap for 1 October to 31 December 2026 puts the average electricity unit rate at 26.32p a kWh, and from 1 October domestic electricity in Great Britain carries no VAT until 31 March 2027. Against that, the electric-car tariffs on sale in late September 2026 charge, in their off-peak hours: Octopus’s Intelligent Octopus Go 8p a kWh from 1 October (8.4p before the VAT change), 11.30pm to 5.30am plus up to six hours a day of smart charging, needing a smart meter and a compatible car or charger, on a 12-month fix with a £50 exit fee; EDF GoElectric 6.66p at 0 per cent VAT by EDF’s own footnote (the headline still reads 6.99p), 11pm to 6am, £75 exit fee; E.ON Next Drive Smart 8.5p, midnight to 6am, needing a compatible car and charger, no exit fee; British Gas EV Power 9.5p, midnight to 5am, paid by Direct Debit. E.ON and British Gas do not say whether their figures include VAT.

All of them need a smart meter, and the rate outside the cheap hours is the number to check before you switch. Octopus’s public tariff data for Intelligent Octopus Go in London shows a day rate of 35.481p a kWh before VAT, which is the rate from 1 October (37.255p with 5 per cent VAT until then), against the 26.32p cap. E.ON charges 32.363p a kWh for boost charging or for charging outside its smart schedule at peak times. EDF and British Gas show their day rates in a quote. Our guide to time-varying electricity prices explains who these tariffs suit and who should stay on a flat rate.

Here is what the difference is worth for the car. Which?’s average is 3.18 miles per kWh, and Which? says its lab figures include charging losses. At 8p a kWh that is 8 ÷ 3.18 = 2.5p a mile; at the 26.32p cap rate it is 8.3p a mile. The Department for Transport’s National Travel Survey puts the average battery-electric car in England at 9,400 miles a year (2025, as estimated by owners), which is 9,400 ÷ 3.18 = 2,956kWh. On the cap rate that costs 2,956 × 26.32p = £778 a year; at 8p it costs £236; the gap is about £540. That is the car’s share only: the rest of your household use moves to the tariff’s day rate, so the net difference depends on how much else you use and when. For comparison, a diesel Volkswagen Tiguan 2.0 TDI at its official 52.2mpg and the RAC’s 28 September UK average of 199.18p a litre costs 199.18 × 4.546 ÷ 52.2 = 17.3p a mile, about £1,630 over the same miles. Our fuel price tracker follows the pump price.

Two caveats. The zero rate of VAT is temporary and runs to 31 March 2027; if the 5 per cent rate that applied before then returns, home rates rise by about 5 per cent. And the government has announced a mileage charge for electric cars of 3p a mile from 1 April 2028, uprated with inflation from 2029; draft legislation was published for technical consultation in July 2026, so it is not yet law.

No driveway: channels, council permission and public charging

If you park on the street, the tidy answer is a cross-pavement channel: a narrow covered gully set into the pavement so your cable can run from the house to the kerb without a trip hazard. Whether you may install one is your local authority’s decision, and not all councils allow them. Under current rules in England you can need three permissions: from the council as highway authority for the channel itself, planning permission for the channel and charger unless the council has a local development order, and street-works permission. The government confirmed on 11 September 2026 that it will create a permitted development right for channels in England, removing the planning application, subject to conditions, but the legislation had not been laid at the time of writing and the Highways Act permissions stay either way.

Cost varies by council. Kerbo Charge, one of the main suppliers, advertises a fully installed channel from £999 including VAT and the council permissions, says the exact price is set by your local authority and may be higher, and says it is live or trialling with 55 councils; those are the company’s own claims. A £25 million fund that helped English councils pay for channels in 2025-26 is now closed, so what your council charges, and whether it has a scheme at all, is a question for its highways department. In Scotland, Transport Scotland announced a pilot in August 2025 offering up to £3,500 per household in East Lothian, Renfrewshire and Perth and Kinross, delivered by Energy Saving Trust; check with Energy Saving Trust whether it is still open. With a channel in place you can claim the on-street version of the £500 grant for the charger.

Two things a channel does not do: it does not reserve the space outside your house, and it does not help on a day someone else is parked in it.

Without home charging you pay public prices, which HMRC treats as standard-rated for VAT at 20 per cent, with no domestic overnight rate. Zapmap’s price index for August 2026 puts the average pay-as-you-go rate at 54p a kWh on chargers from 3kW up to 49kW and 77p on rapid and ultra-rapid units; Zapmap notes many drivers pay less through memberships and offers. At 3.18 miles per kWh that is 54 ÷ 3.18 = 17p a mile on a slower public charger, just under the diesel Tiguan above at 17.3p, and 77 ÷ 3.18 = 24.2p a mile on a rapid, which is dearer than diesel. Zapmap says around 85 per cent of all charging happens at home. An electric car without home or workplace charging still works, but most of the running-cost case for it disappears, which is a reason to settle the charger question before the car, not after.

What happens in a power cut

The charger stops. It is mains-powered with no battery of its own; Pod’s user guide says a charger showing no light can be a sign there is no power to it, and a flashing white light means it is powering on. Whether it picks up the charge where it left off or waits for you to start it again depends on the charger and the car’s own settings, so check both manuals rather than assume: nothing in Pod’s documentation promises a restart. If a cable will not come out, Pod’s advice is to unlock the car, release the plug at the car end first, then the charger end, and never to force it.

Can the car power the house? Mostly not, and be wary of anyone selling a charger on that basis. Some electric cars offer vehicle-to-load (V2L): a socket, or an adaptor for the charge port, that runs appliances. Nissan’s new Leaf gives up to 3.6kW that way through an accessory adaptor; Kia says its UK cars support only V2L, not vehicle-to-home, and that V2L cannot be used while the car is charging. Powering the house itself needs vehicle-to-home or vehicle-to-grid hardware, and Octopus, which sells a V2G tariff, calls it early-stage technology and says the vast majority of EVs cannot discharge back into a home; its Power Pack works with one pairing, a V2G-enabled BYD Dolphin and a Zaptec Pro charger. Even then, Indra, a UK maker of vehicle-to-home chargers, says its charger disconnects in a power cut in line with technical regulations and cannot supply the house, and that its units are trial-only. Backup during a grid cut needs an installation designed for island mode, which the IET’s Code of Practice covers as specialist guidance, and Electricity North West says chargers using G99 type-tested equipment must apply for a network connection rather than simply notify.

For a household that wants the lights, the heating controls and the phones to stay on, a portable power station charged from the wall, or from the car’s V2L socket, is the practical answer in 2026. Our power cut tracker shows live faults by area and what you are owed when one runs long.

How to buy

The free route first. GOV.UK has a postcode search of OZEV-approved installers; if you want the grant you must use an OZEV-authorised installer and fit a charger on OZEV’s eligible model list. Electrical Safety First says a home charge point must be installed by a registered, competent electrician, and Pod’s installer guide requires installers registered with a Competent Persons Scheme. Ask two or three for a quote and put the same four questions to each: what exactly the standard installation includes (cable length, trunking, consumer unit), what would make yours non-standard, whether they check for a looped supply and the earthing at the survey rather than on the day, and who notifies the DNO.

Then use a national installer as a benchmark. Pod’s £999 with installation included, and its published list of what standard covers, is a useful yardstick to hold a local quote against. Which? gave Pod’s installation service its Trusted Trader endorsement in September 2023; Trusted Trader is a scheme traders pay to join, so treat it as a check rather than a recommendation, and judge on the price and the survey. PreparedBritain is in Pod’s affiliate programme, so we may earn a fee if you order through a link on this site; that does not change the benchmark, and the free GOV.UK route comes first.

Tethered or untethered: the tethered version has a 6.5-metre cable permanently attached, the untethered version means you plug in your own cable each time. At Pod the difference is £50.

Timing: the grant, for those who qualify, runs to 31 March 2027 and can be ended or changed, with OZEV aiming to give four weeks’ notice. Do not book the install before OZEV approves you.