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Swiss chalet with a photovoltaic system at sunrise

COMPLETE PV SYSTEMS · OPTIONAL STORAGE

Solar panels Valais: cost, incentives and installation

Valais is one of the sunniest cantons in Switzerland: in Sion, MeteoSwiss measures 1,448 kWh/m² per year and 2,158 sunshine hours (1991 to 2020 average). Combined with the altitude effect, special subsidies for alpine systems, and simplified procedures, Valais offers good conditions for solar energy.

Valais has high solar irradiation: in Sion, MeteoSwiss measures 2,158 sunshine hours per year on average (1991 to 2020). How much yield a roof in the Valais Alps delivers depends strongly on altitude, horizon and pitch.

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Figures with sources

What does a solar system cost in Wallis?

Here is the guide price, with its source and the calculation behind it.

Guide price, single-family home

5–10 kWp rooftop · incl. 8.1% VAT

CHF 14,500–23,300

Federal one-off paymentCHF 360 per kW of module capacityEnFV
−CHF 1,800–3,600
After incentive
CHF 12,700–19,700

Reference curve of the SFOE price survey 2025. A market comparison, not a quote; without battery, roof renovation and meter cabinet. BFE 2025

Your detailed report

What your system earns, we calculate for your roof.

From your address, roof and consumption, with the incentives of your canton. We send the report by email straight away.

  • Benefit per yearin the report
  • Amortisationin the report
  • Total incentivesin the reportPronovo · canton · tax
  • CO₂ per yearin the report

Free and non-binding · no sharing with third parties · no unsolicited calls

Calculation, size and storage in detail

  1. Costs

    What a system costs

    Example: 5–10 kWp rooftop PV: CHF 14,500–23,300. Incl. 8.1% VAT, before incentives and tax deductions, without a battery. Calculated with the reference curve of the SFOE price survey (CHF 1,628 per kW plus CHF 5,278): the range reflects different system sizes. A market comparison, not a quote.

    Roof renovation, structural reinforcement and replacement of the meter cabinet are not included. Roof access, electrical work and planning can change the price. Your specific quote follows the property assessment.

    Costs with calculation and sources

  2. Sizing

    Single-family home: the realistic size

    A typical household using around 4,000 kWh per year needs roughly 25 m² of module area (Swissolar, February 2024). As a starting figure, global irradiation in Canton Wallis is 1,448 kWh/m² per year (MeteoSwiss, Sion station, 1991 to 2020 average). Whether that works on your roof in Wallis depends on orientation, pitch and shading, not on the floor plan.

    Two federal bonuses explicitly do not apply to a single-family home: the winter electricity bonus requires at least 100 kW, and the tilt bonus at least 75 degrees of pitch. Neither applies to an ordinary pitched roof. Counting on them makes the business case look better than it is.

    Clarify notification and permission before installation

  3. Storage

    Battery storage and self-consumption

    Battery storage earns its money through self-consumption. Electricity you use yourself saves not only the energy price but also grid fees and levies, which is why it is worth more than exported electricity. That is what decides whether a battery pays off.

    Since 1 January 2025, an association for self-consumption (ZEV) may also use the existing connection lines. This makes apartment buildings and neighbourhood setups considerably cheaper, as no dedicated line is required. The grid operator depends on the municipality; in the Canton of Wallis they include EnBAG, EW Obergoms.

    When battery storage makes sense

Sources: SFOE price survey 2025 · 03 Aug 2026 · FTA: VAT rates · Swiss Federal Office of Energy, factsheet on PV promotion (PDF) · Pronovo, one-time payment for PV · Swissolar, photovoltaics factsheet (February 2024)

Services

What we offer.

PV system, heat pump, storage, wallbox and monitoring from one team. Every service is planned as part of a working energy system.

Illustration of a home with a solar roof, heat pump and charging station.

01 · Roof & facade

Plan and install PV systems cleanly.

We review roof, structure, shading, cable routing, inverter and grid connection. Then we create a technically reliable quote.

Roof review · Coordination of electrical work · Handover

01 / 05

Components by

  • Fronius
  • LONGi Solar
  • BYD
  • SolarEdge
  • Ernst Schweizer
  • SMA
  • Stäubli
  • Huawei
  • KOSTAL

Process

Understand first, then promise.

We clarify roof, electrical work, incentives and expansion path before you receive a quote. No site chaos, no wishful math.

  1. 01
    About 2 minutes

    Initial estimate

    Your key details are enough for a first, honest orientation. No appointment, no obligation.

  2. 02
    Response within 24 h on business days

    3D survey & technical review

    We measure the roof by drone and clarify electrical work, regulations and the grid operator.

  3. 03
    A few days after the survey

    Transparent quote

    You see every line item individually, realistic ranges and sensible options such as storage or a wallbox.

  4. 04
    After permit and grid-operator approval

    Planning, installation & handover

    Planning and installation by Vigorek. Electrical connection, grid registration and commissioning are handled by an electrical contractor licensed under the NIV. We coordinate schedules and documents.

From installation practice

What no one sees once the modules are on.

Hooks and rails disappear under the modules. That is exactly where it is decided whether a system holds and the roof stays watertight. Marc Hammerschmidt has installed roofs like these himself and recorded the work on his phone.

Original footage, day 1trimmed, no sound

Site diary · one tiled roof

  1. Hooks come first. They sit under the tiles and later carry rails, modules, wind and snow.

    • Every hook in line, so the rails sit without stress.
    • The tile above each hook lies flat again, so rain runs off as before.
    • The scaffold at the eaves is up before anyone steps onto the roof.

  2. Aluminium rails go onto the hooks. Where they end is decided in the plan, not on the roof.

    • Roof windows, vent pipe and chimney stay clear.
    • Rail rows run parallel, so the module field gets a straight edge.

  3. By day four, the field is in place. When hooks and rails are right, the joints run straight by themselves.

    • Even joints, clamps on one line.
    • The field ends above the eaves; the bottom row of tiles stays clear.

More roofs

  • Black modules on a red tiled roof on installation day, eaves and scaffold railing below
    Same roof · day 4The modules are in place. The joints run through every row.
  • Hip roof with black tiles: the module rows get shorter towards the hip
    Hip roof · black tilesThe upper rows get shorter and follow the hip line.
  • Black modules on a grey concrete tile roof, next to an uncovered roof window
    Concrete tile roofBlack modules with black frames; the roof window stays clear.

Where this footage comes from. Installations Marc Hammerschmidt worked on himself. To protect the owners, we do not name the location or the client.

Your installation. We document it the same way: every step with date and image, as part of your system records.

The Founders

Engineering depth. Financial structure.

You know before signing who calculates your project and who builds it: two founders, one for engineering, one for finance. A solar system only works long-term when both fit together from the start.

Christian Freiberger

CFA · former KPMG Senior Manager

Co-Founder · Strategy & Finance

Christian has been an independent management consultant and interim manager since 2015, most recently as Interim Treasury Manager at an energy storage manufacturer. Before that he was a Senior Manager at KPMG. He brings the financial structure: liquidity planning, transparent calculations and no project whose numbers don’t add up.

Marc Hammerschmidt

B.Eng. Mechanical Engineering

Co-Founder · Engineering & Planning

Marc handles the technical side: planning, structural analysis and system integration. He has helped install systems on roofs himself and plans so that nothing has to be improvised on the roof.

Clarity before commitment

Answers before you decide.

Canton check

Solar system in Canton Wallis: what matters regionally

For local PV projects, the municipal boundary is not the only factor: roof access, snow load, shading, meter cabinet and grid connection determine the project flow.

Canton Wallis has its own rules for subsidies, permits and grid connection. We check them before quoting and record them in the project documentation.

Roof potential

Global irradiation in Canton Wallis: 1,448 kWh/m² per year (MeteoSwiss, Sion station, 1991 to 2020 average).

Grid & utility

Relevant grid operators in the canton: EnBAG, EW Obergoms. Metering concept and registration are clarified before execution.

Permit

Solar obligation: federal law (Art. 45a EnG) requires a solar system on the roof or façade of new buildings with a chargeable floor area over 300 m² (for permits filed from 1.1.2023) — the cantons set the specific minimum area; in Valais at least 40% of the chargeable building area (cantonal energy ordinance, formerly Art. 28a VREN, kEnV since 1.1.2025). In addition, a cantonal self-generation obligation applies since 1.1.2025 (at least 20 W/m² of energy reference area, no requirement above 30 kW). Large alpine systems: Solarexpress procedure. Vineyard agri-PV: flexible regulations. Normal notification procedure for standard systems.

Subsidies & taxes

Solar obligation for new buildings: under federal Art. 45a EnG, new buildings with a chargeable floor area over 300 m² must install a solar system (photovoltaic or solar-thermal) on the roof or façade (for permits filed from 1.1.2023); the cantons set the exceptions and the specific minimum area. In the canton of Valais the area of the solar panels or thermal collectors must cover at least 40% of the chargeable building area (cantonal energy ordinance, formerly Art. 28a VREN, kEnV since 1.1.2025). In addition, the cantonal energy law (kEnG, in force since 1.1.2025) introduces a self-generation obligation for new buildings: at least 20 W/m² of energy reference area, with no power above 30 kW being required. Mainly thermal subsidies at cantonal level.

All municipalities

Solar in the 122 municipalities of the Canton of Wallis

Registered systems, solar capacity per resident, energy price 2027 and winter share of roofs per municipality, from federal data. 33 municipalities have their own page (in German) with yield, build-out and listed buildings.

122 municipalities, alphabetical

Municipalities in the Canton of Wallis with federal figures
MunicipalitySystemsW per residentct/kWh 2027
Agarn2166720.20
Albinen1154120.20
Anniviers2701,21221.77
Arbaz1851,57221.77
Ardon2271,22519.77
Ausserberg491,14519.83
Ayent4441,07821.77
Baltschieder1061,51119.83
Bellwald511,30523.24
Bettmeralp1940023.24
Binn212818.65
Bister34,35123.24
Bitsch811,79023.24
Blatten19925.71
Bourg-Saint-Pierre132,64623.76
Bovernier5151321.40
Brig-Glis35283723.24
Bürchen1722,30519.83
Chalais3031,60121.77
Chamoson3451,14219.77
Champéry8861125.82
Chippis3642721.77
Collombey-Muraz6071,34625.82
Collonges5286523.64
Conthey5321,32121.77
Crans-Montana54468821.77
Dorénaz5992319.77
Eggerberg341,27019.83
Eischoll381,49819.40
Eisten15419.55
Embd1445823.16
Ergisch171,26320.20
Ernen381,04920.85
Evionnaz642,86319.77
Evolène7345121.77
Ferden640125.71
Fiesch531,62420.85
Fieschertal1584020.85
Finhaut1332119.77
Fully7461,03724.50
Gampel-Bratsch1131,20520.20
Goms4254919.82
Grächen4869724.01
Grengiols1998723.24
Grimisuat4091,30421.77
Grône1411,32521.77
Guttet-Feschel481,71720.20
Hérémence10583321.77
Icogne551,42421.77
Inden878920.20
Isérables4542119.77
Kippel1689325.71
Lalden3081419.83
Lax181,54320.85
Lens26870421.77
Leuk2141,51820.20
Leukerbad1014921.20
Leytron2521,28919.77
Liddes941,32623.76
Martigny5401,37219.70
Martigny-Combe14261118.90
Massongex1131,87719.77
Mont-Noble1601,24521.77
Monthey50149924.25
Mörel-Filet461,51523.24
Naters36368123.24
Nendaz44777819.77
Niedergesteln802,11319.83
Noble-Contrée4191,09921.77
Oberems111,52920.20
Obergoms2350919.82
Orsières2581,19223.76
Port-Valais24580925.82
Randa12514.16
Raron1262,21220.34
Riddes1871,20919.77
Ried-Brig1401,11023.24
Riederalp422,09323.24
Saas-Almagell740820.87
Saas-Balen733522.72
Saas-Fee4272221.61
Saas-Grund1957819.69
Saillon19886619.77
Saint-Gingolph3230525.82
Saint-Léonard14674721.77
Saint-Martin1041,34721.77
Saint-Maurice2331,01119.77
Salgesch1352,77921.77
Salvan11774319.77
Savièse7441,06321.77
Saxon3361,46019.77
Sembrancher642,26521.40
Sierre5981,27521.77
Simplon0010.97
Sion83789421.77
St. Niklaus7972823.16
Stalden451,56018.40
Staldenried3390922.67
Steg-Hohtenn912,30022.98
Täsch1018418.68
Termen1142,48523.24
Törbel2283319.69
Trient1267019.77
Troistorrents4231,02724.82
Turtmann-Unterems622,70120.20
Unterbäch542,07619.36
Val de Bagnes73088621.40
Val-d'Illiez15567625.82
Varen4573520.20
Vernayaz8498019.77
Vérossaz901,04519.77
Vétroz4421,88221.77
Vex12562921.77
Veysonnaz4060521.77
Vionnaz21487025.82
Visp1781,24519.83
Visperterminen801,04618.64
Vouvry22671225.82
Wiler (Lötschen)3280825.71
Zeneggen342,52819.83
Zermatt4618517.00
Zwischbergen009.10

Systems: SFOE register (as of 2026-09-14). Energy price: cheapest grid operator in the municipality excluding fixed and metering fees, ElCom, profile H4. Winter roof: October–March share of the roof solar potential, SFOE (sonnendach.ch).

Your next step: an initial estimate in about 2 minutes.

Your key details produce a first orientation on price range, incentives and payback. That is the basis on which we talk about your project.

Free and non-binding.Response within 24 h on business days.No sharing with third parties.

Direct contact

If the project is already more concrete.

Roof plans, photos or an existing quote are easiest to send us by email or WhatsApp.

Email
info@vigorek.ch
Phone
+41 78 615 90 58
WhatsApp
Open chat
Location
Kirchweg 32, 8102 Oberengstringen, Zürich, CH
Coverage
Planning and installation of photovoltaics in the Zurich region, Limmat Valley and eastern Aargau. Electrical work by a partner with an installation licence.

Core services

Services with a real focus on Wallis

The key services, tailored directly to Wallis and the local requirements in your region.

Regional service

PV installation Wallis: solar mounting company

Valais has high solar irradiation: in Sion, MeteoSwiss measures 2,158 sunshine hours per year on average (1991 to 2020). EW Obergoms and EnBAG remunerate feed-in from 2026 at the BFE reference market price (statutory minimum 6 Rp./kWh up to 30 kW) plus guarantees of origin (HKN). How much yield a roof in the Valais Alps delivers depends strongly on altitude, horizon and pitch. Extreme conditions (wind, snow, UV) require mounting structures and installation details that exceed lowland standards.

Further reading

Helpful answers on solar in Wallis

These guides answer the questions that come up most often before deciding on a solar installation.

PV solar obligation in Valais

Valais solar obligations distinguish between new buildings, extensions, removed roof coverings and roof areas above 500 m². The key anchors are 20 W/m² of energy reference area, the 30 kW cap, 80% of the renovated roof area and cantonal exemptions.

PV feed-in payment Valais

How EnBAG structures PV feed-in payment in Valais in 2026 by summer, winter, HKNs and TOP-40, and which federal minimum payments apply where no agreement exists.

All locations by canton and municipality

The locations directory gives you an overview of all cantons and municipalities and takes you straight to the information for your region.

Open locations