Solar roof in Upper Valais
In-roof solar in Upper ValaisDuty for roof renovations
In Valais a solar system must be installed when the roof covering is renewed, with exceptions set out in the rules. Free site visit, quote within 72 hours.
- Site visit: free and with no obligation
- Binding quote within 72 hours
- Calculated with the electricity price in Upper Valais: 24.6 ct./kWh
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- documented reference systems
- 29
- output of these systems
- 718.1kWp
- to a binding quote
- 72h
- is what the site visit costs
- 0CHF
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Data in Upper Valais
Solar power in Upper Valais in figures
- Household electricity price 2026
- 24.6ct./kWh
- Median of the communes, excluding VAT. 3.1 ct. below the Swiss median (27.7 ct.).
- Solar potential of the roofs per year
- 1,118GWh
- Used so far: 9.1% (Switzerland 12.8%).
- Solar potential of the façades per year
- 438GWh
- Façades yield less than roofs, but more in winter.
- Solar power per person per year
- 1,119kWh
- Switzerland: 866 kWh.
- of residential buildings were built before 1981
- 60.3%
- Switzerland: 59.5%. If the roof needs renovating, the solar roof can be planned in at the same time.
- hailstones are to be expected about every 50 years
- 2.5cm
- Typical value of the communes according to MeteoSwiss. Important for choosing modules and for insurance.
Example: 10 kWp in-roof system on a single-family home in Upper Valais
- Yield per yeararound 10,000 kWh
- Self-consumed (30%)3,000 kWh
- Grid power saved per yeararound CHF 740
- One-off payment for integrated systemsCHF 4,000
Guide value, not a quote. Assumptions: 1,000 kWh per kWp, electricity price 24.6 ct./kWh excluding VAT. Integrated systems receive a higher one-off payment than mounted ones, because the modules form the roof skin. More in our guide How much does a solar system cost?
Calculate it for my roofSources: ElCom (electricity prices 2026), Swiss Federal Office of Energy (solar potential), Energie Reporter by geoimpact on behalf of SwissEnergy (solar power, electric cars; CC BY 4.0), Federal Statistical Office (Register of Buildings and Dwellings), MeteoSwiss (hail climate), Energy Promotion Ordinance (one-off payment).
In-roof solar in Upper Valais
What applies to your solar roof in Upper Valais
Solar roofs in historic core zones and protected townscapes
In Valais, under the building ordinance the permit procedure for sufficiently well-adapted systems is replaced by a notification. It goes to the commune at the latest 30 days before construction starts. In protection zones, for protected buildings and for systems that are not well adapted, a building application is still needed. The 2024 handbook of the commune of Goms points to the many module shapes and colours that can solve almost every case, and shows as an example a communal building in Grimentz covered with solar roof tiles. For natural stone or wooden shingle roofs it recommends a subordinate share of the area, no more than a quarter of the roof area. In townscapes worthy of protection, it is worth looking at outbuildings such as garages or garden sheds.
Subsidies
For integrated systems, the federal government pays a higher one-off payment (Einmalvergütung, EIV) through Pronovo than for add-on systems. We did not find a cantonal programme for photovoltaics, and the canton subsidises solar thermal systems through the buildings programme. Some communes or energy suppliers may offer their own contributions. For tax purposes, the canton allows the costs of a photovoltaic system to be deducted as an energy-saving measure. We submit the notification to your commune on paper or digitally through the cantonal platform.
Plan the roof renovation and solar roof together
In Valais, renewing the roof covering triggers an obligation. If the roof covering is removed, a solar system of at least 20 watts per square metre of energy reference area must be installed, and more than 30 kW is not required. The obligation also applies to new builds, with exceptions. This is the moment for an in-roof system, because the modules replace the new covering on the covered area. Exempt are, for example, buildings with GEAK class C after the renovation, with a facade renovation at the same time, or with only the north-facing side re-covered. We check whether your project falls under the obligation.
Grid operators
Electricity prices 2026 in Upper Valais
What power from the grid costs is set by your grid operator. The more expensive grid power is, the more every kilowatt hour you use from your own roof is worth.Swiss median: 27.7 ct./kWh.
| Commune | Grid operator | ct./kWh |
|---|---|---|
| Brig-Glis | EnBAG Netze AG | 28.5 |
| Naters | EnBAG Netze AG | 28.5 |
| Visp | VED Visp Energie Dienste AG | 24.6 |
Source: ElCom, Federal Electricity Commission, tariffs 2026.
The free site visit
One appointment at your home. Then you know everything.
A project manager from our team visits you and checks three things. No sales show, no obligation. Afterwards you receive a binding quote with yield, subsidies and payback.
01Roof
Area, orientation, pitch, condition of the roof covering and shading.
02Electrical system
Grid connection, distribution board and space for inverter and battery.
03Your consumption
Electricity bill, car, heating, plans. From this we calculate yield and subsidies.
How your project runs
Request
Tell us briefly about your building and your goal. Online or by phone.
Site visit
We check your roof, electrical system and consumption at your home. Free of charge.
Quote in 72 hours
Binding and transparent, with yield, subsidies and payback.
Permit and subsidies
We handle the notification procedure, the grid operator and Pronovo.
Installation and commissioning
Our own installers, a fixed date, final inspection with you on the roof.
Step 1 takes one minute. We take care of the rest.
Google reviews
What our customers say about us.
5.0
Unabridged and unedited, straight from our Google profile. The reviews are in German.
All reviews on GoogleWir sind sehr zufrieden mit unserer Wallbox für unser E-Auto.
Cemil B. · October 2026
Wir können Solarinnovation.ch und insbesondere Jordan für seine kompetente Beratung und perfekte Umsetzung als zuverlässigen Partner für nachhaltige Energielösungen aus einer Hand von Herzen weiterempfehlen. Er hat uns mit seinem umfangreichen Fachwissen von der ersten Beratung bis und mit der Umsetzung kompetent begleitet. Er hat alle Fragen immer verständlich erklärt. Wir sind mit der Indach-Solaranlage, kombiniert mit einem Speicher sehr zufrieden.
Daniel · August 2026
Die SolarInnovation GmbH hat mich durch ihre sehr flexible und kompetente Beratung und Arbeitsausführung sehr überzeugt!
Frederic L. · September 2025
Eine sehr seriöses Firma. Danke Aulson, Danke Jorden.
Alex I. · August 2025
Top Service und super Beratung! Unsere Solaranlage am linken Zürichseeufer läuft perfekt, produziert mehr Strom als erwartet und sieht auch noch toll aus. Absolut empfehlenswert!
Marc W. · August 2025
Built near you.
29 projects, 718.1 kWp in total. From Zumikon and Lachen we work all over German-speaking Switzerland, most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau.
Canton of Zurich
- Rüti41.1 kWp
- Zürich26.6 kWp
- Zürich6.8 kWp
- Zürich10.9 kWp
- Gossau ZH7.7 kWp
- Zollikerberg17.7 kWp
- Ebmatingen16.9 kWp
- Ebmatingen17 kWp
- Zürich7.5 kWp
- Maur6.9 kWp
- Herrliberg14.8 kWp
- Herrliberg12 kWp
- Meilen17.2 kWp
- Bachs10.2 kWp
Canton of St. Gallen
Canton of Schwyz
Canton of Aargau
- Staffelbach16 kWp
- Reinach AG20.7 kWp
- Berikon19.8 kWp
- Oberkulm20.7 kWp
Canton of Lucerne
Canton of Zug
Frequently asked questions
Before you get in touch.
Is the site visit really free?
Yes. The visit and the quote cost you nothing and commit you to nothing. You only decide once you hold the binding quote in your hands.
Do I have to build a solar system in Upper Valais when the roof covering is renewed?
Yes. If the roof covering is removed, Valais requires a solar system of at least 20 watts per square metre of energy reference area. More than 30 kW is not required. There are exceptions, for example for GEAK class C after the renovation (GEAK is the cantonal energy certificate for buildings).
What exceptions are there to the Valais solar obligation for roof renovations?
Exempt are, among others, buildings that reach GEAK class C after the renovation, buildings with an energy-efficiency facade renovation at the same time, buildings where only the north-facing side gets a new covering, and buildings used only in summer.
How much of a natural stone roof may be covered with solar modules in Upper Valais?
For natural stone or wooden shingle roofs, the Goms commune handbook recommends that the system takes up a subordinate share of the roof area, no more than a quarter. It also suggests looking at outbuildings.
Is an in-roof system watertight?
Yes, if it is properly planned and installed. Together with flashings and seals, the modules form the water-bearing layer. Underneath, an underlay membrane remains as a second safeguard. Connections at the chimney, ridge and eaves are the critical points. We work with particular care there.
Can I convert my existing roof to in-roof?
Yes, but it only makes sense as part of a roof renovation. The tiles have to come off anyway then. If your roof is still in good condition, an on-roof system is usually the more economical solution. We tell you honestly during the site visit what is worthwhile.
Will an in-roof system be approved in a historic core zone?
Often more readily than an on-roof system, because it looks calmer. For protected buildings and in historic core zones, a permit is required, and the commune decides case by case. We clarify the situation for your address and submit the documents.
Which regions do you cover?
All of German-speaking Switzerland. We build most often in the cantons of Zurich, St. Gallen, Schwyz and Aargau. Our locations are in Zumikon ZH and Lachen SZ.
From one company
Goes well with
The first step
We come to you. Free of charge.
We check your roof, electrical system and consumption. Afterwards you know what is possible on your roof, what it costs and which subsidies you receive. The binding quote follows within 72 hours.
- Free and with no obligation
- Quote within 72 hours
- Subsidies pre-financed on request
