Smappee home EV chargers: EV Wall, EV One and solar-aware charging

Smappee is a Belgian energy-monitoring company whose home charger range is built around one idea: the charger should know what your house is doing with energy, not just what the car is drawing. The current AC line has three hardware models, the EV Base, EV Wall and EV One¹, plus the EV Dual, a modular two-connector station². The EV Wall is the wall-mounted flagship, charging at up to 22 kW on a three-phase supply or 7.4 kW on a single-phase one³.

The feature that sets it apart from most UK wallboxes is solar-aware charging. Smappee states that solar surplus is prioritised first, helping reduce reliance on the grid⁵, and the Smappee App adds built-in solar forecasting and phase-switching so the car charges with maximum solar power⁶. Independent guidance confirms the general principle: smart chargers can monitor real-time solar electricity production and adjust charging speed accordingly, switching between solar and grid supply depending on availability⁷.

There is no published Smappee price for a supplied-and-fitted charger; as with most home charge points, prices are installer-quoted. What follows is what the maker's own documentation and independent guidance say the hardware does.

Smappee's charger line-up: EV One, EV Base, EV Dual and EV Wall

Smappee's October 2025 residential ordering guide sets out the current AC line as three hardware models: EV Base, EV Wall and EV One¹. The differences are mostly about where they sit and what is bundled. The EV Wall is described as compact and wall-mounted, suited to a garage or closed carport, while the EV One is elegant and wall-mounted or freestanding, for a driveway or open space¹⁰. The EV Wall is a wall-mounted charging station with one connector⁹.

The EV Base is the entry hardware, and the EV Dual sits above the single-connector models: a modular AC charging station built to adapt to installation needs, with a single EV Dual Core available in socket or cable configuration and wall-mounted or ground-mounted setup². A Smappee Smart Grid Ready module is supported on all EV Line chargers, the EV Wall, EV One, EV Base, EV Ultra and future variants, with one module required per charger¹¹.

Alongside the current line sit the residential EV Wall Home models, including the EV Wall Home Black, a socket version with a Magnelis structure and aluminium front plate¹², and the EV Wall Lite, a wall-mounted basic charger with plug-and-charge or RFID activation¹³. For the differences between charger types generally, see types of home EV charger.

EV Wall power options: 7.4 kW single-phase or 22 kW three-phase

The EV Wall's power output depends entirely on the electrical supply it is connected to. On a three-phase connection it delivers 22 kW; on a single-phase connection, 7.4 kW³. Most UK homes have a single-phase supply, so 7.4 kW is the realistic figure for the majority of installations; the 22 kW figure applies where a three-phase supply exists, which is uncommon in domestic settings.

The two weights differ because they describe two configurations: the socket-only station at 7.3 kg and the version with cable and cable holder at 12.4 kg³. The 8 m cable is generous by wallbox standards and reaches most driveway parking positions; the socket alternative means supplying your own Type 2 cable. Charging speed expectations at 7.4 kW and 22 kW are covered in EV charging speeds and times.

How the EV Wall charges from your own solar output first

Solar charging is the EV Wall's headline capability. Smappee states that solar surplus is prioritised first, helping reduce reliance on the grid⁵, and the charger has integrated energy management with grid and solar measurements⁹. In practice the charger watches what the panels are exporting and modulates the charging rate to absorb that surplus, rather than drawing a fixed current from the grid.

The Smappee App adds two refinements. Built-in solar forecasting helps time charging to when solar output will be available, and phase-switching lets the car charge with maximum solar power⁶. Phase-switching matters on three-phase installations, where solar generation may be uneven across phases: matching the charging phases to the generating phases lifts the share of the charge that comes from the roof.

Independent guidance supports the underlying mechanism. Smart chargers can monitor real-time solar electricity production and adjust charging speed accordingly, drawing more or less power and switching seamlessly between solar and grid supply depending on availability⁷. The trade-off is speed: charging only from surplus solar is slower than charging at full rate, so a household trading daytime charging for maximum self-consumption accepts longer charge times. The wider context is in charging an EV from solar panels.

Managing demand: static, dynamic and cascade load balancing

Smappee's AC chargers have built-in static load balancing, which the maker says protects the installation and helps prevent overloads and power cuts¹⁴. Static balancing works by a fixed maximum current being set at installation; the EV Wall Lite Pack, for example, provides static overload protection by manually setting up a fixed maximum current¹³.

Above that sit two smarter layers. Dynamic load balancing automatically adapts to site consumption⁵, which the Smappee App describes as keeping the home and charger in sync, with no tripped circuits while the rest of the house draws power⁶. A current transformer clamp at the supply measures whole-house demand and the charger trims its own output so the main fuse is never exceeded. For larger setups, the EV Wall supports cascade load balancing for more complex installations⁵, where multiple chargers share a limited supply under a coordinating scheme.

The same energy management system scales from a single installation to a broader portfolio and, Smappee states, works seamlessly with EV charging, solar and storage¹⁵. How balancing works across charger brands is explained in load management and load balancing, and the sensors involved in CT clamps and sensors.

Housing, safety and compliance: IP54/IK10, 6 mA DC RCM and 30 mA RCD type A

The EV Wall is rated IP54 and IK10³: sealed against dust and splashing water, and resistant to heavy impacts, which is the standard combination for outdoor charging equipment. The enclosure is a Magnelis structure with an aluminium front plate³, and it operates from -25 °C to 40 °C³.

Residual current protection is integrated: 6 mA DC RCM and 30 mA RCD type A⁸. The 6 mA DC monitoring is the part that matters for EV charging, because DC fault current can blind a standard RCD; the charger detects it itself. External protection is still required. Smappee's documentation for the EV One and EV Wall Home specifies a circuit breaker of maximum 40 A, type B or C¹⁶, and the EV Wall Lite documentation adds a 30 mA RCD type A or B according to local regulations¹⁷. The EV Dual Wall provides its 6 mA DC RCM and 30 mA C40 AC RCBO type A 10kA per connector¹⁸, and the EV Base provides 6 mA DC RCM and 30 mA AC RCD type A per charging point¹⁹.

Product certification is CE, with ACMA also listed for the EV Wall⁴. What these ratings mean in practice is covered in EV charge point safety, standards and certification and RCD protection for EV charge points.

Communications, measurement and access: OCPP, MID metering and RFID

The EV Wall includes 2 years of 4G (LTE) connectivity⁸ and an Ethernet 100BASE-T port³, so a wired home network can carry the connection instead of the mobile network. Its communication protocol is OCPP 1.6 J, ready for update to OCPP 2.0.1²⁰. OCPP is the open charge point protocol: because the charger speaks an industry-standard protocol, it can in principle be connected to a different back-office platform rather than being locked to one operator's service, though the Smappee features are designed around Smappee's own app and platform.

Metering is MID certified class B³, with a kWh meter compliant with IEC 62053-21 and an accuracy of 1%⁹. MID certification is the legal standard for billing-grade metering in the EU, which is what makes split billing between employer and employee possible on this charger⁵. Smappee also makes a separate MID meter with a Modbus RTU (RS-485) interface²¹ for whole-system measurement.

Access control offers four activation methods: unauthenticated, swipe RFID, scan QR code, or an optional Pay Station³. The product page adds controlled access and user whitelisting, so the owner decides exactly who can use the charger⁵. The EV Wall Home pack takes a different commercial shape: it includes a 5-year subscription to the Smart subscription plan, covering real-time and historical energy data on grid, solar and always-on consumption, autonomous overload protection, solar and self-consumption optimisation, smart charging schedules and over-the-air updates for both charger and app⁹. The EV Dual Wall includes 5 years of 4G connectivity¹⁸. More on the connectivity layer is in EV charger apps, Wi-Fi, 4G and firmware.

Smappee: a Belgian firm with more than ten years in energy monitoring

Smappee is a Belgian company, and the EV Wall is made in Belgium, with what the maker calls inclusive assembly⁵. Its origin is not in chargers but in energy monitoring: the Smappee energy management system monitors electricity, gas and water in one scalable system¹⁵, and the chargers inherit that measurement heritage, with grid and solar measurements integrated into the hardware⁹.

The company's monitors have independent standing in the UK. Smart Energy GB notes that energy monitors, including brands such as Smappee and Owl, allow you to see your electricity use in near real-time²². That monitoring background explains the EV Wall's design choices: rather than a wallbox with an app bolted on, it is a measurement device that happens to charge a car, and the same platform extends to solar and storage¹⁵.

Living with an EV Wall and your home's energy self-sufficiency

An EV Wall shifts a significant load into the household's own control. Charging at home replaces public charging, and solar-aware charging replaces grid electricity with the roof's own generation whenever surplus exists⁵. Add a battery and the self-consumption logic extends further: storage is a way of increasing self-consumption and reducing reliance on the grid²³, and Smappee states its system works seamlessly with EV charging, solar and storage¹⁵. Tariff optimisation, charging when electricity is cheapest with support for dynamic pricing⁵, adds a second lever.

The dependencies that remain are worth naming. The charger still draws from the grid and an electricity supplier whenever solar is insufficient, and its smartest features, solar forecasting, dynamic balancing, schedules and over-the-air updates, run through the Smappee app and platform⁶. The included 4G connectivity lasts 2 years⁸, after which remote features depend on the Ethernet connection or a continued arrangement. Future capabilities such as Plug and Charge and V2G are stated as ready or prepared for²⁰, not delivered. The broader picture is in EV charging and household energy independence.