Electric Car Charging at Home

If you’re considering getting an electric car, then you’re going to need an electric car charging point at home.  We expect to see the majority of electric car charging to be carried out at home, as it is most convenient, with smaller top-ups at workplace charge stations and public charging stations.  There are a number of things you will want to consider when choosing an ev charging point, which we explain below.

How long does it take to charge an electric car?

There are two main types of electric car charger for use in the home, fast chargers and standard chargers.

Fast chargers draw 32 amps of electric current, equating to either 7 kW of power if your home has a single phase supply, or 22kW if your home has a 3-phase supply.  The majority of homes have single phase supplies in the UK, with only larger properties and commercial premises tending to be 3-phase.

A 7kW charger will fully recharge most electric cars in 3-4 hours, depending on the capacity of the battery.  This would be 1-2 hours if you were fortunate enough to have a 3-phase supply. High end models such as Telsa’s and the new Jaguar I-Pace will take a little longer to charge their larger battery packs.

By contrast standard chargers only supply 3.6kW of power.  Consequently they take longer to fully charge a car, taking 6-8 hours for most models.  However, if you are content charging your vehicle overnight ready for use the next morning, then a standard charger is a perfectly viable option, and you may be able to benefit from cheaper prices by doing this. We may suggest a standard charger if the electricity supply to your house is limited.

EV chargepoint connectors

As well as the charger itself, you will need to consider whether to get a tethered or an untethered charger.  A tethered ev home charger has the charging cable integrated into the chargepoint itself.  By contrast, an untethered cable is loose at both ends and is usually stored within the car and can also be used for charging when out and about.

It is also important to ensure you have the right cable to fit your car.  The majority of car sockets are either Type 1 or Type 2.  Type 1 is a 5 pin socket capable of charging single phase at 3.6 or 7 kW.  Type 2 is a 7 pin socket and can be used to charge at 3.6, 7 or 22kW (3-phase).  You will need to make sure you get the right cable for the car, so check your vehicle manual.

Electric car chargers from Joju

Joju are not tied to any particular manufacturer and we offer a range of products to suit everyone’s needs.

EO home chargepoints – our entry level chargepoint is the eOLEV home charger.  It is available as a 3.6kW or 7 kW version, with an optional tethered cable.

eo home charger, eo, electric car charging at home

NewMotion – our smart charging option is the NewMotion charger.  NewMotion units come with a smart interface allowing you to see chargepoint usage and cost data on a portal.  The new Automated and Electric Vehicles Bill will require chargers to have smart functionality in order to access OLEV grants; the exact timing of this is unknown at present but will be sometime in 2018.  Current smart features include: RFID (charge card) access for extra security (or to charge your neighbours to charge), and  billing your fuel costs to your employer.

New Motion, home charger, smart ev charger

Zappi charger – our third chargepoint offering is a little different!  The Zappi charger diverts excess solar energy from PV roofs directly into the battery of your car, allowing you to fill your tank with sunshine!  We’ve blogged in more detail about the Zappi here.  The Zappi has 3 modes – Eco+ (solar charging), Eco (Standard 3.6kW slow charge) and Fast (7kw fast charge), and you simply choose how to charge when you plug in.

zappi, myenergi, EV chargepoint, solar, divert, excess

How much does it cost to charge an electric car?

The cost of charging an electric car will depend on the battery capacity and range of the vehicle, and the cost of the electricity you purchase to fill your car.  The table blow shoes the battery capacity, range, and running costs for some of the most popular models of electric car.

  Battery Capacity (kWh) Range (miles) Cost for full charge @ 15p/kWh Cost/mile @15p/kWh Cost for full charge @ 7p/kWh Cost/mile @ 7p/kWh
Full electric
Renault Zoe 22 150  £3.30 2.2p  £1.54 1p
Nissan Leaf 30 155  £4.50 2.9p  £2.10 1.4p
BMW i3 33 190  £4.95 2.6p  £2.31 1.2p
Tesla Model S 100 380  £15.00 3.9p  £7.00 1.8p
Volkswagen E-golf 24.2 118  £3.63 3.1p  £1.69 1.4p
Hybrid electric
Volkswagen GTE 8 31  £1.20 3.9p  £0.56 1.8p
Mitsubishi Outlander 12 32  £1.80 5.6p  £0.84 2.6p
Mercedes C350e 6.2 19  £0.93 4.9p  £0.43 2.3p
Volvo XC90 T8 9.2 14  £1.38 9.9p  £0.64 4.6p
Volkswagen Passat GTE 9 31  £1.35 4.4p  £0.63 2p

For full electric cars, the cost per mile is between 2-4p/mile if charged off conventional domestic electricity.  If, however, you charge overnight off economy 7 tariffs or the newer dedicated electric car charging tariffs the cost per mile can range from 1 to 2p/mile.  Good Energy, OVO and Ecotricity have all launched EV charging tariffs.  By contrast, the AA quotes the cost of running a car on unleaded petrol as between 11 and 19p/mile. The maintenance cost of electric cars have also been shown to be significantly less than their fossil fuel equivalents.

Electric car charging point installations

Grants of up to £500 are available for the installation of electric car chargers at home, but you must use an OLEV (Office for Low Emission Vehicles) approved installer.  Joju are OLEV approved to install eo, NewMotion and Zappi chargers.

In order to be eligible for the grant you will need off street parking – for a wall mounted chargepoint in a garage or as a post system by the driveway.

Electric car charging for on-street parking

If you park your car on the street, charging an electric car is more tricky, but this is where your local council can help.  The Office for Low Emission Vehicles has made £4.5 million funding available from OLEV until 31st March 2020 for local authorities to provide on-street chargepoints for residents via the On-street Residential Chargepoint Scheme (ORCS)

Local Authorities will be identifying areas of high demand for chargepoints, so it’s up to you and your neighbours to make your voices heard!

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Further Reading

Applying for OLEV grants is a bit of a hassle, so we’ve simplified the process for you. Find out how we can help here

Run your car on sunshine with the Zappi charger.

See our case studies on electric vehicle charge points

See how Government policy is looking to replace diesel and petrol vehicles by 2040.