How Much Does an Electric Charger Cost?
The cost of an electric car charger depends on model, features, and whether installation is included.
Charger Unit (Supply Only): A standard 7kW "fast" charger unit typically costs between £450 and £800. Units with advanced features, such as solar integration, can cost more.
Charger Unit with Standard Installation: The typical price for a 7kW charger, including standard installation (assuming a straightforward setup), is generally £949 to £1,200.
Factors that Increase Cost: Installation costs can increase due to long cable runs (over 10 meters), drilling through thick or multiple walls, and necessary upgrades to your home's electrical system.
----------------------------------------------------------
Do I Need to Upgrade the Customer’s Electric Supply Before Installing an EV Charger?
Depending on the property's system age and capacity, you may need to upgrade the customer's electrical supply. The installer must notify the local Distribution Network Operator (DNO) for approval. The DNO will decide if an upgrade is needed.
Potential Required Upgrades:
Service Head Fuse: Older properties often have 30- or 60-amp fuses, which may need to be upgraded to 80 or 100 amps to handle the high, sustained load of an EV charger. The DNO often provides this fuse upgrade free of charge.
Consumer Unit (Fuse Box): If the existing fuse box is old, a replacement or the installation of a new, dedicated consumer unit for the EV charger may be necessary to meet modern electrical safety standards (BS7671).
For high-power chargers (11kW or 22kW), the home may need to move from a single-phase to a three-phase supply. This upgrade is often costly and time-consuming, requiring the DNO's involvement.
Looped Supply: If the property has a "looped supply" (where the electricity is shared with a neighbouring property), the DNO must resolve this before installation.
----------------------------------------------------------
What Is the Difference Between Tethered and Untethered Chargers?
The key difference lies in the charging cable.
Tethered vs. Untethered EV Chargers Comparison
Tethered: The charging cable is permanently attached to the charger unit.
Untethered (Socketed): The charger has a socket/port; the cable is detachable and separate.
Tethered: High convenience—simply unravel the attached cable and plug it into the car.
Untethered (Socketed): Lower convenience—the user must retrieve a separate cable, plug it into the unit, and then plug it into the car.
Tethered: Restricted to the connector type on the fixed cable (usually Type 2 in the UK/Europe).
Untethered (Socketed): Highly flexible—you can use different cables for different car connectors (Type 1 or Type 2) or desired cable lengths.
Tethered: Can look less tidy, as the cable is always visible or stored on the unit.
Untethered (Socketed): Offers a tidy, minimalist appearance; the cable can be stored away completely.
Tethered: Less future-proof; if you buy a new car with a different socket type, you would need a new charger unit.
Untethered (Socketed): More future-proof; if you change cars, you just buy a compatible replacement cable rather than a whole new unit.
----------------------------------------------------------
Are EV Chargers Compatible With Solar PV?
Yes, many modern EV chargers are fully compatible with solar PV (Photovoltaic) systems. Contact City Plumbing for guidance on choosing the best model to maximise your solar integration and energy savings.
Many manufacturers offer models with built-in or optional features to integrate with home solar. These "solar-compatible" chargers allow users to:
Charge using 100% solar surplus power (often called "Eco+" or "Solar Only" mode). This ensures the car only charges when your solar panels are generating excess power, minimising reliance on grid electricity.
Popular brands known for their solar integration include MyEnergi (Zappi), Hypervolt, and Ohme.
----------------------------------------------------------
What Do I Need to Know About Installing an Electric Car Charger?
For a general
EV charger installation, key things you need to know are:
Installer Certification: The installer must be certified and qualified (e.g., NICEIC or equivalent) to fit EV charging points and comply with all current wiring regulations (BS7671).
DNO Notification: The installer must notify the Distribution Network Operator (DNO) before or immediately after installation. The DNO checks the available capacity of the local electricity supply.
Earthing Arrangements: EV chargers require specific safety measures related to earthing. Many modern smart chargers have built-in PEN fault protection, often negating the need for a separate earth rod, simplifying installation.
Location: The charger must be located in an area with adequate Wi-Fi or mobile signal to ensure that the smart features (such as smart scheduling and solar integration) comply with the UK's Smart Charge Points Regulations.
Charge Rate: The most common domestic installation is a 7kW charger, which is considered a "fast" charger. The customer must have a power supply capable of supporting the charger's rated capacity.