Dual electric car charger: how to choose

Charging two electric vehicles (EVs) at home simultaneously is a practical reality for many UK households. A dual electric car charger allows two EVs to power up from a single home charging unit, transforming how multi-EV families manage their energy needs. This guide explores the benefits, types, installation considerations, and costs associated with these smart devices, helping you make an informed decision for your home.

Considering a dual electric car charger for your home? Fuse Energy can help you manage your increased energy usage with clear pricing and smart energy management tools. Click here to switch to Fuse Energy today.

What is a dual electric car charger?

A dual electric car charger is a single charging unit equipped with two charging cables or sockets, designed to charge two electric vehicles at the same time. This differs significantly from having two separate single chargers, offering a more integrated and often more efficient solution for households with multiple EVs.

Understanding EV twin charging

EV twin charging refers to the ability to charge two electric vehicles from one dedicated charging station. This setup is particularly beneficial for households where both partners drive an EV, or where there is a need to charge a family car and a second vehicle concurrently. The core principle is convenience, ensuring both vehicles are ready when needed without juggling charging schedules or requiring multiple power outlets.

How dual chargers differ from single units

The primary distinction between dual and single EV chargers lies in their output capability and internal management systems. A single charger provides power to one vehicle, whereas a dual charger manages power delivery to two. This often involves sophisticated internal technology, such as dynamic load balancing, to distribute available electricity efficiently and safely between the connected vehicles. Dual units typically occupy less physical space and require only one electrical connection point to the property's main supply, simplifying installation compared to installing two separate chargers.

Benefits for multi-EV households

For homes with more than one electric vehicle, a dual electric car charger offers several compelling advantages, enhancing convenience, optimising space, and potentially reducing running costs.

Convenience and efficiency

The most immediate benefit of a dual charger is the ability to charge two EVs simultaneously. This eliminates the need to swap charging cables or wait for one vehicle to finish before starting another, which is particularly useful for families with differing schedules or high daily mileage. Smart dual chargers can also prioritise charging based on vehicle needs or scheduled departure times, ensuring both cars are adequately charged when required.

Space saving and aesthetics

Installing a single dual charger unit takes up less wall space than two separate chargers. This can be a significant advantage in garages or driveways where space is at a premium. Furthermore, a single unit often presents a cleaner, more integrated aesthetic, avoiding the clutter of multiple cables and devices.

Cost optimisation with smart features

Many dual EV chargers come equipped with smart charging features that can lead to significant cost savings. These features allow users to schedule charging sessions during off-peak hours when electricity rates are lower, or when renewable energy generation is high. Smart charging can also integrate with home energy management systems, optimising power usage across the household.

Types of dual EV chargers

Dual electric vehicle chargers come in various configurations, each offering different features and levels of connectivity. Understanding these options is key to selecting the right unit for your home.

Tethered vs untethered options

Dual chargers, like single units, can be either tethered or untethered. A tethered charger has one or two cables permanently attached, typically with Type 2 connectors, ready for immediate use. This offers convenience as you do not need to retrieve your car's charging cable. Untethered chargers, on the other hand, feature sockets into which you plug your vehicle's own charging cable. This provides greater flexibility for different EV models and cable lengths but requires you to use your car's cable each time.

Smart features and connectivity

Modern dual EV chargers are increasingly "smart," offering features such as:

• App control: Manage charging schedules, monitor energy consumption, and view charging status from your smartphone.
• Dynamic load balancing: Prevents overloading your home's electrical supply by intelligently distributing power between two charging EVs.
• Integration with home energy systems: Some chargers can communicate with solar panels, battery storage, or smart home platforms to optimise energy use.
• Over-the-air updates: Ensures your charger stays up-to-date with the latest features and security enhancements.

Power output and charging speeds

The power output of a dual EV charger dictates its charging speed. Most home chargers in the UK are 7kW units, which can fully charge an average EV overnight. Dual chargers often share this 7kW output between two vehicles, meaning each car receives 3.5kW when charging simultaneously. Some advanced dual chargers offer higher outputs, or can dynamically allocate the full 7kW to a single vehicle if only one is charging. Fuse Energy offers the Easee One EV charger, which has a 7.4 kW output. Consider your daily mileage and charging needs when evaluating power output.

Installation and electrical considerations

Installing a dual electric car charger requires careful planning, particularly regarding your home's electrical capacity and the implementation of safety features.

Assessing your home's electrical capacity

Before installing any EV charger, it is crucial to assess your home's existing electrical capacity. Dual chargers draw a significant amount of power, and your property's main Fuse or consumer unit may need upgrading to safely accommodate the increased demand. A qualified electrician will conduct an assessment to determine if your current setup can handle simultaneous EV charging alongside other household appliances without tripping breakers or causing safety issues. Underestimating this can lead to costly upgrades or electrical problems down the line. For more information on setting up your home for EV charging, you can refer to a complete guide on EV charging at home.

The role of dynamic load balancing

Dynamic load balancing is a critical feature for dual EV chargers, especially in homes with limited electrical capacity. It works by monitoring the real-time electricity consumption of your entire household. If other appliances (like an oven or shower) draw a lot of power, the load balancing system automatically reduces the power supplied to the EV charger(s) to prevent overloading the main Fuse. Once the household demand drops, the charger intelligently increases its power output again. This ensures safe and efficient charging without the need for expensive electrical infrastructure upgrades. This intelligent distribution of power between two charging EVs prevents your home's electrical supply from being overwhelmed.

Professional installation requirements

All EV chargepoint installations in the UK must comply with the IET Wiring Regulations (BS 7671). This means installation must be carried out by a qualified and certified electrician. For households looking to claim government grants, the installer must also be authorised by the Office for Zero Emission Vehicles (OZEV). Professional installation ensures safety, compliance with regulations, and optimal performance of your dual charger.

Government grants and costs

Understanding the financial aspects of installing a dual EV charger, including available government grants and typical costs, is essential for UK homeowners.

UK EV chargepoint grants explained

The UK government offers grants to help reduce the cost of installing EV chargepoints. While the Electric Vehicle Homecharge Scheme (EVHS) for homeowners ended, specific grants remain available for certain property types.

The EV Chargepoint Grant for renters and flat owners can provide up to £500 towards installing a chargepoint at the property, provided they have private off-street parking. Similarly, the EV Chargepoint Grant for landlords can provide up to £500 per socket, for up to 200 sockets across all sites. Installers must be OZEV-authorised to claim these grants. For the most current eligibility criteria and grant details, refer to the official gov.UK website. It is important to note that the customer applies for these grants themselves via gov.UK; the installer's role begins after the application is approved.

Typical costs of dual charger installation

The cost of a dual electric car charger unit itself can range from approximately £600 to over £1,200, depending on brand, features, and power output. Installation costs vary significantly based on the complexity of the electrical work required at your property. Factors such as the distance from your consumer unit to the chargepoint, the need for trenching, or upgrades to your home's main Fuse can all impact the final price. On average, a standard installation might add £300-£600 to the unit cost, but complex installations could be higher. Fuse Energy offers the Easee One charger including installation for a base cost of £899.

Long-term savings and return on investment

While the upfront cost of a dual charger might seem substantial, the long-term savings can offer a strong return on investment. Charging at home is significantly cheaper than using public rapid chargers. By optimising charging times with smart features and integrating with smart energy tariffs, you can further reduce electricity costs. The average UK home uses around 2,700 kWh of electricity per year1. Smart charging features allow users to schedule charging during off-peak hours, potentially reducing electricity costs. This means substantial savings over the lifetime of your EVs, especially for multi-EV households.

Choosing the right dual charger

Selecting the ideal dual electric car charger involves considering various factors, from your current needs to future energy plans.

Factors to consider before purchase

• Charging speed requirements: Do you need both cars fully charged overnight, or can they share a slower charge?
• Tethered or untethered: Do you prefer the convenience of attached cables or the flexibility of using your own?
• Smart features: Which smart functionalities are essential for your household, such as app control, load balancing, or solar integration?
• Budget: Balance the unit cost with potential installation expenses and grant eligibility.
• Warranty and support: Look for reputable brands offering good warranties and reliable customer service.

Future-proofing your charging setup

Consider how your EV charging needs might evolve. Are you planning to upgrade your EVs to models with larger batteries or faster charging capabilities? Will you be adding solar panels or home battery storage in the future? Choosing a charger that is compatible with these potential upgrades can save you money and hassle down the line. Some chargers are designed to integrate seamlessly with broader home energy systems, offering greater flexibility. Installing a smart meter can also help you monitor your energy usage more effectively, preparing your home for future energy demands.

Compatibility with home energy systems

For homeowners looking to maximise efficiency and savings, ensure your chosen dual charger can integrate with your existing or planned home energy systems. This includes compatibility with smart meters, solar PV installations, and home battery storage. Such integration allows for intelligent energy management, where your EVs can charge using surplus solar energy or during periods of low grid demand, further enhancing cost savings and reducing your carbon footprint.

Optimising charging with smart energy

Integrating your dual EV charger with smart energy management is key to unlocking its full potential, offering both cost savings and greater control over your home's energy use.

Integrating with smart tariffs

Smart energy tariffs are designed to encourage electricity consumption during off-peak hours, when demand on the grid is lower and renewable energy generation is often higher. By pairing your dual EV charger with a smart tariff, you can program your vehicles to charge automatically when electricity is cheapest, typically overnight. This can significantly reduce your running costs and contribute to a more sustainable energy system. While Fuse Energy's specific EV tariff was withdrawn from sale from 1 July 2026, future-oriented smart tariffs and energy management tools remain crucial for optimising charging.

Managing energy with the Fuse app

The Fuse app provides control over your home energy, enabling you to manage dual EV charging alongside other energy demands. This allows you to monitor consumption, schedule charging, and make informed decisions about your energy use. By giving you visibility and control, the app helps you align your charging habits with the most cost-effective and sustainable times.

Maximising your 'power to play with'

Optimising your charging with smart energy management helps you maximise your energy use without fear of high bills, aligning with Fuse's vision of 'power to play with'. This approach to home energy upgrades, including EV charging, integrates seamlessly with smart meters and future-oriented tariffs to create a more efficient energy ecosystem. Fuse Energy offers clear, fact-backed guidance on home EV charging, ensuring homeowners make informed decisions for their multi-EV needs.

Managing your home's energy, especially with a dual EV charger, should be straightforward and empowering. Fuse Energy is committed to providing clear pricing, real-time usage data through our app, and 24/7 human customer support. Our aim is to make energy abundant and easy to manage, giving you the power to play with. Switching to Fuse Energy is quick and simple, allowing you to take control of your energy bills and charging needs from day one. Click here to switch to Fuse Energy today and discover a smarter way to power your home and EVs. You can also learn more about our mission to build a better energy future by clicking here.

References

1. UK Government. Subnational electricity and gas consumption summary report 2021