Can I Install a 11kW Home Charger?
In short, you need Three-Phase electricity to have a 11kW electric vehicle charger and most properties in the UK are single phase.
For EV drivers looking to minimise charging time, an 11kW home charger can seem like an appealing option. But is it possible to install an 11kW charger at home in the UK? This article dives into what’s involved, the requirements, and key considerations for setting up an 11kW charging station at home.
What is an 11kW Charger?
An 11kW EV charger provides faster charging than the standard 7kW home chargers commonly installed in UK homes. Capable of adding roughly 30–40 miles of range per hour, an 11kW charger can be particularly useful for EVs with larger batteries, helping drivers reduce downtime between charges.
Key Considerations for Installing an 11kW Charger at Home
- Three-Phase Power Supply Requirements
The main difference between 7kW and 11kW home chargers is the power supply required. A standard UK home is typically equipped with a single-phase supply, which supports up to a 7.4kW charger. To install an 11kW charger, however, you’ll need a three-phase electricity supply.
How Can I Tell if I Have Three-Phase Power?
Three-phase power is rare in residential properties in the UK, although it is standard for larger commercial buildings. You can check with your electricity provider or Distribution Network Operator (DNO) to see if your home has, or can be upgraded to, three-phase power. However, upgrading to three-phase can be costly and is not always straightforward. - Charger Compatibility and Options
If you do have three-phase power, you’ll find a variety of 11kW chargers available on the UK market from reputable brands, including Intelli EVand Autel. These chargers are designed to work with three-phase power and can charge compatible EVs faster than 7kW chargers. - EV Compatibility with 11kW Chargers
Before deciding on an 11kW charger, it’s worth checking if your EV can take full advantage of the faster charge rate. Many electric cars have onboard charging limits, and some EVs designed for the UK market may not support charging speeds over 7kW, regardless of the charger’s capacity. Always check your EV’s charging specifications to ensure compatibility with an 11kW charger.
How Much Faster is 11kW Charging?
An 11kW home charger can add around 30–40 miles of range per hour, depending on your vehicle’s efficiency and onboard charging capability. In comparison, a 7kW charger generally adds about 20–30 miles of range per hour. For EV drivers with larger battery vehicles, the faster charging rate can be a significant advantage, especially if you regularly need to charge in a limited time frame.
Available Grants and Incentives for Home Chargers
The UK government currently offers incentives to help with the cost of installing home EV chargers. For example, the EV Chargepoint Grant can provide financial assistance for home charging points, but it’s important to note that the grant’s eligibility criteria may vary based on specific charging and property requirements. If your property requires a three-phase power upgrade for 11kW charging, this may affect your eligibility or increase out-of-pocket costs.
Frequently Ask Questions about 11kW EV Chargers
Can I install an 11kW charger with a standard single-phase power supply?
No, 11kW chargers require a three-phase power supply. Most UK homes have single-phase power, which supports only up to 7.4kW. Upgrading to three-phase is an option but can be costly and requires approval from your Distribution Network Operator.
Is it worth upgrading to three-phase power just for an 11kW charger?
This depends on your charging needs, the type of EV you drive, and the feasibility of upgrading to three-phase power at your home. For many drivers, a 7kW charger is sufficient and much simpler to install. If, however, you own an EV with a large battery or use your vehicle intensively, the faster charging speed may be beneficial.
Which EV models can use 11kW home charging?
Most EVs with three-phase onboard chargers can benefit from an 11kW home charger. However, some models, particularly those designed for single-phase charging, are limited to 7kW. Always check your vehicle’s specifications to determine its maximum charge rate.
Can I still get a government grant if I need three-phase power?
The EV Chargepoint Grant can help cover the installation cost of an EV charger, but eligibility requirements apply. Upgrading to a three-phase supply may affect your eligibility or require additional costs, so it’s best to check directly with the grant providers or your installation expert.
Is an 11kW Charger Right for You?
An 11kW home charger can be a great solution for EV drivers looking to maximise charging speed, but it’s not ideal for everyone. If you already have three-phase power or are willing to invest in an upgrade, an 11kW charger can be a worthwhile choice, especially for high-use EV drivers. However, for most UK homeowners, a 7kW charger will meet daily needs at a lower cost and with less installation hassle.
Get in Touch
Before making your decision, why not get a quote from one of out friendly installers?
