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The Fronius Wattpilot is the intelligent charging solution for all electric car owners.

The Wattpilot is available in two variants – the permanently mounted Wattpilot Home for the household (in an 11 kW variant) and the mobile Wattpilot Go for on the move (in 11 and 22 kW variants).

The device can be operated using the associated Solar.wattpilot app, which also provides an overview of the charging process at the same time. The intelligent plug and play charging solution has two different charging modes called Eco Mode and Next Trip Mode.

What’s more, the Wattpilot is PV-optimised, meaning that the car can be charged particularly cost-effectively and sustainably via automatic 1-/3-phase switching from 1.38 to 22 kW in ampere increments of surplus solar energy.

For basic charging, all you need to do is connect the Wattpilot to the power supply and plug in your car. You can use the Solar.wattpilot app for special settings (PV optimisation, charging modes, etc.).
You can integrate the Wattpilot into a network using WLAN. If the Wattpilot is outside WLAN range, you can boost the WLAN signal using a repeater, WIFI Access Point or PowerLine adapter.
The warranty term is 2 years. 
Yes, you can do that. You can run as many Wattpilots in parallel as you like. Each Wattpilot must be individually integrated into the network. However, PV optimisation only ever works on one device.
No, the Wattpilot communicates with the network via WLAN. It detects and dials into the WLAN network automatically. WLAN will increasingly be provided in car parks as many new cars need WLAN, for example for OTA (over-the-air) software updates.
It is not possible to bill for charging costs directly in the back-end, so there is no way of officially producing an invoice in kWh. However, it is possible to record the power used for charging in kWh and to individually log the time for each RFID chip and charging process. This data can be exported as a CSV file, which would enable the charging time to be invoiced (in minutes).
The scope of supply of the Wattpilot includes the following: mounting bracket, incl. screws and rawlplugs, Wattpilot, miniature fuse, anti-theft device, reset card, ID chip and Quick Guide. The following are available as optional extras: a type 2 cable (5 m), ID chips (10 x), an extra mounting bracket and various adapter kits.
The Wattpilot is made in Austria. 

Installation and start-up

You will need to use the Solar.wattpilot app when starting up the Wattpilot for the first time. The Wattpilot must be connected to the Internet to enable various settings to be made and for remote access. 
Yes! There are no additional, recurring checks and therefore no need for any servicing.
A type A residual current circuit breaker and an automatic circuit breaker must be fitted in the Wattpilot supply line during installation.
CEE sockets are designed for continuous loads. However, it is important to ensure correct installation and that the plug contacts are in perfect condition (no soiling or oxidation).
A Fronius inverter with Fronius Smart Meter is required at the feed-in point. The following Fronius inverters are compatible with the Wattpilot: SnapINverter from Datamanager 2.0 and GEN24 Plus as well as IG, IG Plus, IG TL and CL series in combination with a Datamanager 2.0.

The combination with a Fronius Ohmpilot and a Fronius compatible DC-coupled battery is also possible.

The Wattpilot can also be operated with other inverters / energy sources in combination with a Datamanager Box 2.0 and Fronius Smart Meter at the feed-in point. However, no other selfconsumption controls (battery, Power2Heat, etc.) may be implemented in parallel, because the controllers can interfere with each other. The loads in the household are not taken into account in the display in the Solar.wattpilot app. 
In this case, the maximum charging current is automatically limited to 16 A.
As soon as a CEE plug is fitted, a maximum connection cable length of 30 cm is stipulated by the governing standards. It is therefore not permitted to fit a CEE plug to the connection cable of the Wattpilot Home. Should you require a CEE plug, please opt for the Wattpilot Go.


You can change the charging mode either using the app or a button on the device.

As it stands, there is still no standard for intelligent charging. For this reason, there may be limitations with cost-optimized charging for certain models of car. Fronius endeavours to configure the optimal charging behaviour for every vehicle.The following models of car are affected:

  • Renault Zoe 
  • Twingo 
  • Kia e-Soul
  • Mitsubishi i-MiEV
  • Citroen C-Zero
  • Peugeot iOn
  • VW ID.3 / ID.4  (Due to the charging behaviour, charging must not be interrupted) 

The selection of the car model can be found in the Solar.wattpilot app in Settings - Cost optimisation - Car.

No, it is not possible to do this. However, you can set it to charge to a specific power level in kWh or km, and the electric car will then be charged to this level within a defined time period.

All settings can also be set locally, directly by connecting to the Wattpilot’s hot spot. This is permanently open and secured with a password.The following functions are not possible without a network connection:

  • Remote app access via the internet
  • Coupling with the PV system (PV-optimised charging)
  • Use of flexible electricity tariffs
  • Software updates
No, this is not possible with the Fronius Wattpilot. 
The visualisation for the Wattpilot can be shown directly in the Solar.wattpilot app. Alternatively, a secondary Fronius Smart Meter can be integrated in the Wattpilot load profile so that the data can be visualised in Solar.web.
It is possible to combine the Wattpilot with Fronius-compatible DC-coupled battery storage units and the Fronius Ohmpilot. Threshold values can be defined for both the battery (state of charge in %) and the Ohmpilot (temperature in °C). As soon as the threshold values are reached, the current power values of the battery and Ohmpilot are considered as surplus. This means that the presence of a battery or Ohmpilot can also be taken into account within the system. Prioritization of the Wattpilot is possible, plus further prioritization of the Ohmpilot and battery can be carried out in the web interface of the inverter.
PV optimisation can only ever be used by one Wattpilot at a time. However, several Wattpilot charging solutions can be operated at staggered intervals. A variable electricity tariff can be used for multiple devices at the same time.
It certainly can! You can easily activate and deactivate PV optimisation and variable electricity tariff use in the app. This would enable a user without a PV system to use variable electricity tariffs. Conversely, a user with a PV system can use the charging modes without variable electricity tariff. And, as you’d expect, both options can be used at the same time.
Yes, you can! You can define this setting yourself in the app. This also allows you to define the maximum phase-load imbalance of the Wattpilot.
Yes, PV optimisation can also be implemented with non-Fronius inverters. However, these must be combined with a Datamanager Box 2.0 and a Fronius Smart Meter at the feed-in point. Apart from that, no further energy management (battery, Power2Heat, etc.) may be implemented at the same time, as the control systems can cause faults. The loads in the household are not included in the display in the Solar.wattpilot app.
PV optimisation takes place in individual ampere increments and is provided as standard from type 2.
This means charging increments of approx. 230 W (1-phase) or approx. 690 W (3-phase) are possible. The advantage is that the power range of the photovoltaic system can be used at optimum efficiency (charging power of 1.38 kW - 22 kW). Switching works on vehicles that have a 3-phase or 2-phase on-board charger.
Yes, regular software updates are supplied for the Wattpilot. Providing the Wattpilot is connected to the Internet, installing these updates is very straightforward. 
Yes, it can. The ID chip has to be connected separately for each Wattpilot. 
The Wattpilot will charge for at least 5 minutes to protect the relays.
It will charge at the set amperage. There is no need to reset the electricity limit values. 
Yes, the interface can be used to control the Wattpilot via the Solar.wattpilot app. The interface is encrypted for security reasons and is not publicly accessible.


You can download the app from the Google Play Store (Android) and the Apple App Store (iOS).
Yes, this is possible via the Solar.wattpilot app.
ID chips can be configured using the app. You can store up to ten ID chips. Hold the ID chip up to the RFID symbol on the Wattpilot and press "Teach-in ID chip".
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All information about the amount of electricity charged is displayed in the Solar.wattpilot app.

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