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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. 
Wattpilot 2.0 has been developed based on a normative change (IEC 61851-1:2019 and IEC 62752:2016). This standard only concerns the manufacturer. The previous version of Wattpilot 2.0 may still be sold and used.
The Wattpilot 2.0 is produced with a newly designed housing. This ensures a higher IP protection (IP 55 instead of IP 54). The safety plug adapter cable is produced in a shorter length. The WLAN range has also been improved. In line with our sustainability strategy, more components from Europe are used to avoid long transport routes. Furthermore, there are two new versions of the Wattpilot 2.0: the Wattpilot Home 22 J 2.0 and the Wattpilot Go 22 J 2.0 AUS (for Australia). All known software features like PV surplus charging etc. are still available for Wattpilot (1.0) as well as for Wattpilot 2.0.
The two additional strands serve as digital input for future applications and currently have no function.

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.
The device has a built-in residual current protection module with residual current detection (30 mA AC and 6 mA DC). This means that no upstream type B RCD is required. A separate type A RCD and an automatic circuit breaker must be connected upstream for each Wattpilot.
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. 
Next Trip Mode ensures that your vehicle is sufficiently charged for your next trip. Watch the video to learn how to use Next Trip Mode.
RFID chips allow you to manage multiple users of a Wattpilot. You can find more information in the video.
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. 
In the Solar.wattpilot app, you can activate PV surplus charging and make some advanced settings for it. In the video we show you how it works.
The Wattpilot will charge for at least 5 minutes to protect the relays.
With the flexible electricity tariffs Lumina Strom HOURLY and aWattar HOURLY you can charge your vehicle with the Wattpilot cost-optimized. In the video we explain the activation in the Solar.wattpilot app.
It will charge at the set amperage. There is no need to reset the electricity limit values. 
The variable electricity tariff can be activated under "Settings" - "Cost optimization". Depending on the country-specific availability, either concrete tariffs or bidding zones can be stored. A bidding zone is a defined geographical area in the energy market in which electricity is traded at the current market price. If a bidding zone is used in combination with Wattpilot, the additional surcharges of the concrete electricity tariff used must be added up manually.
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.
The Wattpilot can be reset to factory settings using the RFID Reset Card included in the delivery.
The settings for Dynamic Load Balancing are made in the Solar.wattpilot app.
 Dynamic Load Balancing works with up to 3 Wattpilot devices.
Dynamic Load Balancing requires a compatible Fronius inverter or a Datamanager Box 2.0 as well as a Fronius Smart Meter at the feed-in point.

Yes, prioritization is possible. If the priority is set to the same value, it is prioritized as follows:

- Priority 1: Standard Mode

- Priority 2: Next Trip Mode

- Priority 3: Eco Mode

If the charging mode is the same, the current is divided equally.

Yes, this setting can be activated in the Solar.wattpilot app under "Settings" - "Load Balancing" - "Dynamic Load Balancing". This setting is necessary if the maximum current carrying capacity of the supply line to the Wattpilot charging boxes is lower than the fuse protection at the house connection point. This prevents the circuit breaker of the supply line from tripping.
Yes, the Wattpilot has the Open Charge Point Protocol (OCPP) 1.6 J. OCPP is a standardized interface of charging stations. The interface can be used e.g. for load management purposes, for visualization or for creating charging reports.
With the charging timer, charging can be blocked or allowed at certain times. This allows, for example, cheaper electricity tariffs to be used overnight. The charging timer can be activated in the Solar.wattpilot app under "Settings" - "Charging timer". With the additional setting "Allow/block charging + PV surplus", charging (grid & PV surplus) is allowed/blocked during the defined period. However, PV surplus is still charged during the blocked times.


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.
English, German, French, Italian, Dutch, Swedish, Spanish, Hungarian and Finnish
In the video we explain the meaning of all parameters in the Details menu of the Solar.wattpilot app.
All information about the amount of electricity charged is displayed in the Solar.wattpilot app.
To be able to assign a new password, the Wattpilot must be reset to factory settings.


The Wattpilot can be reset to factory settings using the RFID Reset Card included in the delivery.
The installer of the Wattpilot should create a service case for the affected Wattpilot on Fronius Solar.SOS. Please make sure to include the serial number, the invoice of the purchase and a picture of the data plate.
The Wattpilot is connected to the Internet via WLAN. You make the settings in the Solar.wattpilot app.
  • Check your Solar.wattpilot app under Settings - Cost optimization - Car - Choose phase switch.
  • Make sure your charging cable and your car's on-board charger support three-phase charging.
  • Check the car's app for relevant settings that might limit the charging to one phase.
Make sure to update your Fronius Solar.wattpilot app to the latest version first.
Check your network's wifi signal strength at your Wattpilot. For a stable connection the Fronius Solar.wattpilot app should detect your wifi with at least 50 % strength.
Update your components to the lastest firmware version. For GEN24 inverters with firmware version 1.14.110-1 or higher, make sure the Solar API is activated in the inverter's user interface under "Communication" - "Solar API". Also make sure your inverter and your Wattpilot are within the same IP network, especially if you are using subnets.
Any alterations or modifications to the device without first obtaining the manufacturer's permission can lead to loss of warranty.
Any alterations or modifications to the device without first obtaining the manufacturer's permission can lead to loss of warranty.


You can add your Wattpilot to your PV system in Solar.web in the tab "Settings" - "Components". 

If you have not yet created a PV system in Solar.web, register on and add your Wattpilot and paired inverter when creating the new PV system. When adding the Wattpilot to Solar.web we recommend that the Wattpilot currently has internet connection and is paired with the inverter. Nevertheless it is also possible to add an offline Wattpilot to Solar.web, but Wattpilot data will first be shown, when the Wattpilot is online and paired.
Yes, multiple Wattpilots can be added to a PV system in Solar.web.

For Wattpilot data to be displayed in Solar.web, ensure the following:

  • The Wattpilot (as well as your inverter) must be added to your PV system in Solar.web in the tab "Settings" - "Components". If this tab is not visible, please ask your installer to assign you "Owner" or "Supervisor" rights for your PV system.
  • Both the Wattpilot and the paired inverter must be connected to the internet.The Wattpilot requires firmware version 36.0 or higher.
  • You can update your Wattpilot in the Solar.wattpilot app in the tab "Internet".
  • The Wattpilot needs to be paired with your inverter. Go to the tab "Settings" - "Cost Optimization" in the Solar.wattpilot app to pair your Wattpilot with an inverter.
  • If the paired inverter is a GEN24 or Tauro, firmware version 1.123 or higher is required. You can update your inverter in Solar.web in the tab "Settings" - "Components".

If the Wattpilot has no internet connection (e.g. due to weak WLAN), live and history data is not available in Solar.web. History data will not be restored when the Wattpilot reconnects to the internet.

Furthermore, Wattpilot data is only shown if the Wattpilot is paired with an inverter of the same PV system in Solar.web. For example, no data is displayed in Solar.web for periods when the Wattpilot Go is used on the go.

The Wattpilot must be paired with the new inverter in the Solar.wattpilot app in the "Settings" - "Cost optimization" tab. The inverter must be replaced in Solar.web in the "Settings" - "Components" tab. Afterwards, all Wattpilot data will be displayed again in Solar.web.

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General terms and conditions


1.1 All deliveries and other services effected by Fronius UK Limited (“we”, “us”, “our”, “our-selves”), and all payments made to us, shall be exclusively governed by these Terms of Delivery and Payment. Insofar as applicable provisions may be found to be missing therefrom, the law of England applies. If any business terms of the Ordering Party’s are at variance with these General Terms of Delivery and Payment, we shall only be bound by such divergent terms if we have expressly recognized the same by letter or by telefax.

1.2 In taking delivery of the goods and/or service, the Ordering Party acknowledges the exclusive applicability of our Terms of Delivery and Payment.


2.1 Our offers may be changed or withdrawn by us at any time before acceptance by the Ordering Party, unless the offer makes express mention of an offer validity period. Documents pertaining to our offers – such as drawings, illustrations, samples and patterns, and dimensional, weight, performance and consumption data – contain or themselves constitute only approximate data and are not deemed to be specially agreed characteristics unless otherwise provided. We retain the right to effect modifications for engineering reasons.

2.2 We reserve the proprietary and intellectual property rights including but not limited to copyright to all costs estimates, drawings and other documents; The Ordering Party must ensure that these are neither disclosed to any third party nor used for the purpose of any third party.


Acceptance of an order, and any undertakings or supplementary agreements made by our employees, as well as amendments and alterations of any kind, shall not be binding upon us until we have issued written confirmation by letter, telefax or e-mail.


4.1 Valid prices are always the ones stated in the last offer to the customer and unless specifically stated in writing from Fronius to the contrary, all orders placed on these prices are valid on the date of delivery. These offers are ex-works prices (EXW (Incoterms in the latest version)), exclusive of packaging, insurance, loading at the factory and value-added tax; the packaging will not be removed by us. The Ordering Party shall pay all applicable tariffs, duties or taxes (other than our income taxes) imposed or levied in connection with the supplies made by us under these Terms of Delivery and Payment.

4.2 Payments are to be made net cash, without any deduction and free of charges, within 30 days of the invoice date. It shall be for us to decide which claims or partial claims of the Ordering Party’s may be offset against such payments.

4.3 If any changes in order execution are necessitated by circumstances where risk is borne by the Ordering Party, then this latter shall bear all additional costs thereby incurred.

4.4 If the payment period is exceeded, we shall be entitled to charge default interest at a rate of ten percentage points above the applicable base rate announced by the Bank of England, plus the collection costs, such amounts to total at least 12% p.a. of the overall claim (or such lesser amount determined by us as is reasonable in the circumstances). This is without prejudice to any further consequences of default in payment.

4.5 The Ordering Party is not permitted to withhold payments (in whole or in part) or to offset these against counter-claims which are contested by ourselves.

4.6 Where the Ordering Party holds claims against ourselves, we are entitled to offset these against our own claims against the Ordering Party, at any time.

4.7 For services performed under contracts for work and materials (installation, repairs, maintenance and other such work), we shall charge the hourly rates and materials-prices applicable at the time of completion, plus our applicable surcharges for any overtime, night-time, Sunday and public-holiday working; travel and waiting times are counted as working hours. Travel expenses and daily and overnight allowances will be invoiced separately.


5.1 The delivery period under each order shall commence with the mailing of the order confirmation note by us to the Ordering Party, while the performance period for installation, maintenance or repair work commences when the equipment is received by the Ordering Party. On no account, however, shall the delivery or performance period start to elapse sooner than 14 days after the time when the Ordering Party has furnished us with the documents (e.g. engineering drawings, plans etc), permits or approvals which it is responsible for procuring under the order, or when it has made any agreed pre-payment under the order. The delivery or performance deadline is deemed to have been met if we have notified the Ordering Party prior to such deadline of our readiness to deliver or perform; in cases where a special agreement obliges us to dispatch or deliver by a deadline, the delivery or performance deadline shall be deemed to have been met if the object of delivery or performance has left our factory prior to such deadline.

5.2 Delivery or performance periods are extended for the duration of any unforeseen impediments lying outside our control, such as, but not limited to, stoppages, major personnel outages, unlawful strikes, delays in supplies of essential raw materials or components or the like, as well as by circumstances where risk is borne by the Ordering Party, to the extent that these impediments and/or circumstances are of material relevance to the failure to meet the deadline. Impediments and/or circumstances of this nature also prevent a default arising for which we would otherwise be liable, for the duration of such impediments and no contractual remedies for which we would otherwise be liable will apply. Immediate notification is to be given of the beginning and end of such impediments. We are entitled to terminate the contract, in whole or in part, if such impediments should occur. In the event of termination under this 5.2, and subject to 9, we exclude all liability of any kind whatsoever except to the extent the Ordering Party proves gross negligence on our part.

5.3 If agreed delivery or performance deadlines, or deadlines that have been extended in accordance with 5.2 above, are exceeded by more than four weeks, the Ordering Party shall be entitled to terminate the contract, having granted us at least 14 days’ extra time by notice given to us in a registered letter. In the event of termination under this 5.3, and subject to 9, we exclude all liability of any kind whatsoever except to the extent the Ordering Party proves gross negligence on our part.

5.4 If the Ordering Party incurs a loss from a delay for which we are liable, then it shall be entitled to compensation amounting to 0.5% per whole week - up to a maximum of 5% - of the value of that part of the delivery which cannot be used in time or for its intended purpose as a result of the delay. For services, the compensation shall be 5% of the remuneration. The compensation payments detailed in this 5.4 shall be the Ordering Party’s sole and exclusive remedy in the event of such delay, and subject to 9, we exclude all other liability of any kind whatsoever except to the extent the Ordering Party proves gross negligence on our part. For the avoidance of doubt, subject to 9, we shall not be liable for any delays caused by our suppliers for which we are not responsible.

5.5 In cases where we have undertaken to effect shipping, the mode and route of shipping shall be for us to decide. Goods are always shipped at the Ordering Party’s risk and expense. Subject to 9, we exclude all liability of any kind whatsoever in relation to such shipping except to the extent the Ordering Party proves gross negligence on our part. We shall only take out transport / breakage insurance by order and for the account of the Ordering Party.

5.6 We are entitled to effect part-deliveries.

5.7 Our compliance with the delivery period shall be contingent upon the Ordering Party having fulfilled its contractual obligations in all pending, still-to-be-completed business transactions.

5.8 If shipping is delayed due to circumstances where risk is borne by the Ordering Party, then this latter shall bear all resulting additional costs, such as those for storage at our factory, but with a minimum monthly charge of 0.5% of the invoice amount. In such a case we shall also be entitled to grant the Ordering Party a grace period of at most 14 days, and if this period should expire to no avail, we shall then be entitled, at our own discretion, either to make alternative arrangements regarding the article(s) to be delivered and to effect delivery to the Ordering Party within a suitably extended period of time, or to terminate the contract and claim damages for breach of contract. In this latter case, we are entitled, without having to furnish any particular proof, to require up to 10% of the remuneration for the intended delivery as liquidated damages (as is reasonable in all the circumstances). Where appropriately substantiated, we can also claim compensation for any damage suffered by us over and above this amount.

5.9 Goods ordered on call, or for production with no shipping instructions, must be taken delivery of within three months. If this time limit elapses unused, then the goods will be treated as subject to a shipping delay due to circumstances where risk is borne by the Ordering Party and 5.8 shall apply.

5.10 For services performed under contracts for work and materials (4.7), the Ordering Party is to provide us with the necessary equipment and auxiliary materials (e.g. winches, rails, electricity etc.) in good time and at no charge, even if installation is included in the price (4.1) or if a flatrate price has been agreed for this. Any works needing to be carried out by the Ordering Party preparatory to installation, e.g. building work, must be completed prior to the arrival of our installation technicians. Furthermore, the Ordering Party must take all safety precautions needed for the protection of persons and property. Subject to 9.4, we shall not accept liability for the ancillary personnel, equipment and auxiliary materials which may be placed at our disposal unless gross negligence is proven on our part.


6.1 Unless otherwise stated, risk shall pass to the Ordering Party as soon as the articles to be delivered, or the articles on which we have performed maintenance, repair or other work, have left our factory. The same shall also apply to part-deliveries or in cases where we have under-taken to bear the shipping charges or to perform delivery, setting-up, assembly, installation or other similar services. If the maintenance, repair or other work is carried out on the premises of the Ordering Party, then risk shall pass in the case of the latter as soon as the Ordering Party has received notification that the work in question has been completed.

6.2 If there is any delay in dispatching or delivering the shipment for reasons for which we are not responsible, the risk shall pass to the Ordering Party as soon as it has been notified that the consignment is ready for delivery.


7.1 We shall retain title to the article(s) delivered until the following have been settled in full:

(a) payment of the purchase-price for the relevant articles, and

(b) all other claims that we have – on whatever legal grounds – against the Ordering Party.

7.2 Until title in the article(s) delivered passes from ourselves to the Ordering Party:

(a) the Ordering Party shall store the article(s) in such manner as to show clearly they are our property, and not do any other thing that is inconsistent with identifying the article(s) as our property;

(b) the Ordering Party must notify us immediately of any seizure of the article(s), or any other infringement of our interests as the owner of the article(s); and

(c) we shall be entitled to trace the proceeds of any sale, transfer, assignment, charge, pledge, let, hire or other grant of any interest in the article(s) to a third party, and such proceeds will be deemed to be held on trust for us.

7.3 If the Ordering Party should act contrary to the terms of these Terms of Delivery and Payment – in particular by being in arrears with payment or with any other contractual obligation, and/or by being insolvent – we shall be entitled, at our own discretion, either to terminate the relevant order(s) without granting any grace period or, while leaving the relevant order(s) in force, to take back the article(s) delivered or to forbid it to be used. We shall also be entitled to sell the taken-back article(s) in the open market; after deduction of a handling fee of 10% of the proceeds thus realised (or such lesser amount determined by us as is reasonable in the circumstances), the remainder will be debited from the total of our outstanding claims against the Ordering Party. In the event of our terminating the order(s), we shall charge the Ordering Party a usage fee of 5% of the original value of the article (or such lesser amount determined by us as is reasonable in the circumstances), unless the actual diminution in its value is even greater. 


8.1 We give no warranty for ordinary deviations in size, weight or quality (or as tolerated by ÖNORM, EN or DIN standards or other applicable standards), and also no warranty for informmation given regarding the suitability of the article(s) to be delivered for the purpose contem-plated by the Ordering Party, or for any other particular purpose.

8.2 We warrant the correctness of our processing instructions, user/operating manuals and customer advisory service. We do not warrant compliance with statutory or other regulations when using the articles delivered, and the testing of these articles for the purpose envisaged, shall remain the sole responsibility of the Ordering Party. We shall only be liable for any instructions differing from our written processing instructions and user/operating manuals if we expressively previously confirmed these deviations to the Ordering Party in writing, either by letter, telefax or e-mail. 

8.3 Articles or services supplied must be inspected by the Ordering Party immediately after delivery has been taken of them. Any defects must be reported to us during the warranty period and promptly upon being discovered, in a written notice sent by letter, telefax or e-mail quoting the number and date of the order confirmation note, of the delivery note or of the invoice, and the serial and commission numbers and such details as are reasonably necessary to identify the defect. If the Ordering Party omits to make this prompt notification, it may no longer assert any warranty claims or claims for compensatory damages on account either of the defect itself or of any misapprehension as to whether the delivery or service was free of defects. Any costs which we incur as a result of unjustified notices or notices that are otherwise at variance with the conditions of use are to be refunded to us by the Ordering Party.

8.4 In the case of corrective and preventive maintenance work, our warranty shall be limited to the services actually rendered. We shall only warrant correct functioning of an installation, machine, Software or the like whose components were not all supplied by ourselves if we provable have undertaken – despite the provision of certain components by the Ordering Party or by third parties – to manufacture the installation (or machine etc.) as a whole, and if the faulty functioning in question is not attributable to incorrect or incomplete information from the Ordering Party. 

8.5 Unless otherwise agreed, the warranty period for all warranted articles or services shall be 24 months. From the beginning of the 13th month of this period, however, our warranty shall be limited to making available, free of charge, the items needed for remedying the defects; from this time onwards, any warranty claims going beyond the above shall not be permitted. This period limitation also applies to the supply of items deemed to be immovable and to work on items which are, or are deemed to be, immovable. The warranty period for goods shall start to elapse upon the passage of risk in accordance with Point 6 and, for services shall start to elapse from the completion of the provision of the services. The Ordering Party must always prove that defects coming to light during the warranty period were already present at the time of the passage of risk or completion of services (as relevant). 

8.6 In cases where there is a breach of warranty, we shall – at our own discretion and within a reasonable period of at least 4 weeks’ duration – either exchange the defective article itself, or its defective components, for a defect-free article or defect-free components, or remedy the defect(s), or grant the Ordering Party a reasonable reduction in price, or (unless the defect in question is a minor one) terminate the order. The warranty period is not prolonged by the exchange of the item or of parts or components belonging to the item. If, however, the remainder of the warranty period – including that part of the period during which our warranty is limited to free provision of the requisite materials in accordance with Point 8.5. – lasts for less than twelve months, then the warranty period for the exchanged items, parts or components shall be extended to twelve months. The items, parts or components thus exchanged shall become our property. We shall not refund the costs for any actual or attempted remedying of a defect by the Ordering Party or by any third party. 

8.7 To the extent that is necessary and may reasonably be expected of the Ordering Party, the object of delivery or performance, or the defective part(s) thereof, are to be dispatched or shipped to us immediately at our request, at the Ordering Party’s risk and expense, failing which any and all warranty obligation on our part shall become void.

8.8 The Ordering Party is not entitled to withhold payments on account of warranty claims or other counterclaims not recognised by ourselves.

8.9 Warranty claims from the Ordering Party are excluded in cases where the installation, user and operating manuals provided by ourselves, or to be requested from us by the Ordering Party, have not been observed, or where the user has not fully observed such instructions; if the installation work has not been performed properly and in accordance with the relevant Standards, and in particular if was not carried out by licensed contractors; if any corrective maintenance or other work has been performed on the object of delivery or performance without our consent; if it has been improperly operated or used, or operated despite its protective features being faulty, or taken out of the contract territory without our consent, or used contrary to our instructions or for purposes for which it is not intended; and, moreover, where defects are attributable to foreign object damage, chemical influences, overvoltage, the conduct of third parties or to force majeure; the same applies in respect of natural wear-and-tear. 8.10 Our warranty is also excluded in cases where we have been contracted to carry out repair-orders, to alter or modify used items, or to supply such items.

8.11. Finally all warranty claims shall be excluded if the Ordering Party installs third-party components or replacement parts in our delivery items or services provided by us which have not been expressly recommended by us prior thereto.

8.12. In addition to the rights of the Ordering Party in accordance with Point 8.6. regarding the delivery of inverters for photovoltaic systems the guarantee in accordance with the guarantee conditions of Fronius shall apply, available at


9.1 We shall only be liable for damage suffered by the Ordering Party, of whatever kind, to the extent that the Ordering Party proves that we ourselves brought about this damage either knowingly and wilfully or grossly negligently. If the Ordering Party proves that we have caused damage in an ordinarily negligent manner, our liability shall be limited to the direct damage actually incurred by the Ordering Party, and, moreover, to a maximum overall amount not exceeding the total order value. Furthermore, claims of this type may only be enforced if made by the Ordering Party within six months of the damage in question becoming known.

9.2 In the event that a claim is made against us by a third party in connection with services provided by us where we have produced and delivered in accordance with the drawings, designs, models or other documents provided by the Ordering Party, the Ordering Party shall indemnify us in full against all losses, damages, costs, liabilities and expenses suffered or incurred by us in respect of that claim.

9.3 To the extent permitted by law, our liability to pay damages for property damage by reason of the applicable product liability legislation, including all rights of recourse, is excluded. When using the installations, machines and other articles delivered by ourselves, the Ordering Party is obliged to painstakingly observe all safety regulations, technical rules, installation regulations, operating instructions and user manuals, and in particular all regulations apply-ing to the electrical engineering field, and to allow only authorised skilled personnel to operate the equipment.

9.4. Nothing in these Terms of Delivery and Payment shall exclude or in any way limit our liability to the Ordering Party for (i) fraud; (ii) death or personal injury caused by its negligence (including negligence as defined in s.1 Unfair Contract Terms Act 1977); (iii) breach of terms regarding title implied by s.12 Sale of Goods Act 1979 and/or s.2 Supply of Goods and Services Act 1982; or (iv) any liability to the extent the same may not be excluded or limited as a matter of law.

9.5. We shall not be liable to the Ordering Party under any order made under these Terms of Delivery and Payment for any loss of income, loss of actual or anticipated profit, loss of business, loss of contracts, loss of goodwill and reputation, loss of anticipated savings, loss of , damage to or corruption of data or for any indirect or consequential loss or damage of any kind, in each case howsoever arising, whether such loss or damage was foreseeable or in the contemplation of the parties and whether arising in or for breach of contract, tort (including negligence), breach of statutory duty, indemnity or otherwise.

9.6. Any liability for damage caused by the installation or use of third party components or replacement parts with our delivery items, which have not been verifiably and expressly recommended by us, shall be excluded.


Client shall agree that Fronius International GmbH and its subsidiaries may collect, process and use personal data (such as name, address, email address), if applicable also by commissioning a service provider, for the purpose of sending information regarding products and services of any kind (e.g. by post, email, newsletter and more). A dissemination to externals in excess thereof shall not occur (excluded are legal or judicial obligations to provide information). The consent may be objected at any time in writing, in the newsletter there is also a link to unsubscribe.


11.1 These Terms of Delivery and Payment and any legal disputes arising out of or in connection with any orders made under these Terms of Delivery and Payment are to be governed by English law. The sole place of jurisdiction shall be London. The UN Convention on Contracts for the International Sale of Goods and the International Private Law shall not be applicable.

11.2 If any term of these Terms of Delivery and Payment is found to be illegal, invalid or unenforceable under any applicable law, such term shall, insofar as it is severable from the remaining terms, be deemed omitted from these Terms of Delivery and Payment and shall in no way affect the legality, validity or enforceability of the remaining terms.

11.3 The Contracts (Rights of Third Parties) Act 1999 shall not apply to these Terms of Delivery and Payment and no person who is not a party to an order made in accordance with these Terms of Delivery and Payment may enforce any provision of them.


For software delivered together with other items or for software delivered separately (hereafter “software”) these Terms and Conditions of Delivery and Payment only apply insofar as these do not deviate from the following conditions or from conditions agreed upon separately with the Ordering Party.



12.1.1 All rights of intellectual property, such as copyright, trademark rights, design rights, patent rights, utility model rights and know-how, as well as in particular unprotected inventions, commercial experience, trade secrets and such like, independent from the time these were disclosed to the Ordering Party, shall be reserved at any time by us or our licensors. The Ordering Party shall have the right to use the software after payment of the agreed sum exclusively for his own purposes in accordance with the acquired number of licences. With the present contract only the authorization to use the software is acquired. Dissemination by the Ordering Party shall be excluded in accordance with the copyright law. With a possible participation of the Ordering Party in producing the software no rights other than the specified usage laid out in Section 12 are acquired. The Ordering Party may only use the software simultaneously on one device, which one is his decision. Usage of the software shall constitute any long-term or even any temporary duplication (copying) of the software, whether in whole or also only in part, by saving, loading, running or displaying for the purpose of execution of the software and processing of the data contained therein by the hardware. He shall not be authorized to copy the user manual.

12.1.2 The Ordering Party shall be permitted to make copies of the software for archival and data protection purposes on condition that there is no explicit prohibition in the software or any accompanying material (instruction manual, packaging, etc.) and that all copyright and proprietary notices are transferred unchanged in these copies. Retranslations of the programme code (decompilation) exceeding the legal provisions shall not be permitted.

12.1.3. If the software is equipped with technical copy protection, the Ordering Party shall in the case of damage be supplied with a replacement copy after restitution of the data carrier.



In the event of availability of a new software version the Ordering Party shall be entitled to exchange the supplied software package for a similar software package of the new version at our listed update price; the exchange implies the software package as a whole, as it was acquired by the Ordering Party. With the exchange Ordering Party´s permission to use the exchanged software package shall expire. In such an event the Ordering Party shall immediately and completely destroy all copies, partial copies and backup copies as well as altered or revised versions of the software and the copies, partial copies and backup copies made thereof.



12.3.1 The Ordering Party shall note that it is not possible to develop software programmes in such a manner that these are free from defects for every application condition.

12.3.2 We shall warrant that the supplied software fulfils the agreed functions and has the expressly guaranteed properties. Requirement for any warranty is usage according to contract. A defect for which we are responsible shall only be deemed to exist if the software does not function according to the most recent version of the corresponding performance description/ documentation and if this is reproducible by the Ordering Party. In order to carefully examine possible occurring defects the Ordering Party shall be obliged to support us in the rectification of any defects.

12.3.3 We further shall warrant that the original software is duly recorded onto a tested data carrier. Excepted here from are previously installed software and third-party software products.

12.3.4 Software defects shall be documented by the user and we shall be notified in writing with immediate effect; otherwise 8.3 shall apply.

12.3.5 The warranty period shall always be twelve months; the period commences with the dispatch of the software package.

12.3.6 If the software package is not usable or defect (12.3.2), we shall exchange it primarily for a new one of the same title or for an adequate alternative solution. If this also proves to be unusable or defect and if we are not in a position to make it usable with adequate effort within an adequate time, but at least within a period of four weeks, the Ordering Party may demand a price reduction or a change. Costs of defect rectification by the Ordering Party or a third person shall not be compensated by us.  

12.3.7 In excess of this (12.3.6) we shall not provide warranty, in particular not in the case of the supplied software not meeting the special requirements of the Ordering Party or user, and also not for altered or revised versions of the software (point 12.1.2), unless the Ordering Party can prove that the defects are not connected to the alterations or revisions. The Ordering Party itself is solely responsible for the selection, installation and usage of the software as well as for the results intended therewith.  

12.3.8 In the event of unjustified assertion of defects in the software we shall be entitled to charge the Ordering Party with any incurred costs according to valid cost rates.

12.3.9 A change of the end-user shall exclude any warranty claims 



12.4.1 All further claims of the Ordering Party or third persons, in particular claims for compensation for damages of any kind, shall be excluded, unless the injured party can prove that the damage was caused by us either intentionally or due to gross negligence.

12.4.2 Otherwise Point 9 shall apply accordingly.