Regional service
PV installation Wallis: solar mounting company
People looking for PV installation in Canton Wallis compare more than modules. They compare execution quality, roof protection and coordination. Exactly these points decide on a clean result before quoting and installation.
Clarify before quoting
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.
For Wallis we plan PV installations object-specifically: mounting structures per SIA 261, SUVA-compliant fall protection and complete handover documentation before the system goes live.
Prefer to contact us directly? Send your property address, annual electricity consumption (if known) and preferred timing. Roof photos or existing plans help with the initial assessment.
Project profile
Location
Wallis
Service focus
PV Installation
Regional fit
Wallis
Context
How this service works in Wallis in practice.
Wallis comes with its own framework conditions – from incentives and tax treatment to technical requirements. From those, a cleanly managed project flow for your property takes shape.
Service focus
What really matters for installation on site
Mounting structure per SIA 261, documented penetrations, SUVA-compliant fall protection and complete handover including string diagram, measurement protocol and photo documentation.
- Mounting structure matched to tile, sheet metal, facade or flat-roof systems – not generic, but dimensioned object-specifically to wind zone (SIA 261), snow loads and building height.
- Clean cable routing with documented penetrations and roof membrane protection. Every transition between roof and electrical installation is photographed and recorded.
- Coordination of scaffolding, fall protection (SUVA-compliant), installation logistics and object-specific safety requirements – including a mounting concept prior to material ordering.
- Photo documentation and traceable handover: single-line diagram, string plan, data sheets and photos. The electrical contractor issues the test report and the safety certificate, so acceptance, grid operator and future service have everything in one place.
Regional framework
Why this canton shifts the priorities
Valais: one of the sunniest cantons in Switzerland. In Sion, global irradiation is 1,448 kWh/m² per year and sunshine duration 2,158 hours (MeteoSwiss, 1991 to 2020 average). Vineyard agri-PV as innovation.
- In Canton Wallis, roof type, access and cable routing need to be clarified early so installation does not turn into change orders.
- Owners compare execution quality, roof protection and clear ownership more than simple price promises.
- Site logic directly affects timing, appearance and future maintenance.
Project logic
How roof, installation and electrical work fit together
The order records these steps, responsibilities and required documents. Outstanding assessments belong in the schedule before work begins.
- Mounting structure and scaffolding planned around roof type and access.
- Clean penetrations, orderly cable routing and documented handover.
- Aligned workflow between installation, electrical work and commissioning.
Regional context
PV Installation in Wallis: what matters here
In Canton Wallis, cantonal rules, the responsible grid operator and local permit procedures shape how a project is planned and delivered. The points below show what really matters before quoting, installation and handover.
- Regional starting point
- In Canton Wallis, incentives, grid operators and permit procedures change the priorities for this service.
- Service core
- Installation quality is decided before site work starts: roof access, mounting structure, cable routing and fall protection need to be planned together.
- Grid & registration
- For Canton Wallis, grid operators such as EnBAG, EW Obergoms, metering concept and commissioning are aligned early.
- Decision reason
- In Canton Wallis, roof type, access and cable routing need to be clarified early so installation does not turn into change orders.
- Execution
- Mounting structure and scaffolding planned around roof type and access.
- Economic frame
- Feed-in tariff and self-consumption are matched to the property; in the canton, EnBAG 2026, unter 80 kVA: 14.00 Rp./kWh Sommer / 6.5 Rp./kWh Winter, exkl. MWST; zusätzlich 1.5 Rp./kWh HKN bei Übertragung. Andere Walliser Netzgebiete: Tarif beim zuständigen VNB prüfen. is one relevant reference point.
Cantonal framework
Which cantonal framework shapes the project in Wallis.
The technical service stays the same, but the project frame changes with the canton. That is exactly where incentives, tax treatment and MuKEn requirements become strategically relevant.
Local context
Wallis sets the economic pace for this service.
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.
Tax and subsidy logic
In Valais, solar systems are fully tax-deductible as energy-saving investments. How quickly a system pays back depends on self-consumption and tariff; the tax deduction shortens the time further. 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.
Permits and energy law
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. Valais relies heavily on solar energy and has integrated MuKEn 2014 into its cantonal energy law. The canton positions itself as the "battery of Switzerland" – the combination of hydropower and solar electricity is to enable year-round renewable supply.
Market signal and location
Valais: one of the sunniest cantons in Switzerland. In Sion, global irradiation is 1,448 kWh/m² per year and sunshine duration 2,158 hours (MeteoSwiss, 1991 to 2020 average). Vineyard agri-PV as innovation. Valais offers special subsidies and simplified approval procedures for alpine solar systems. Besides the Pronovo one-time payment, the canton subsidizes storage solutions and large projects. The Service for Energy and Hydropower (DEWK) provides comprehensive consulting.
Sun hours/year
2’158 h MeteoSchweiz Sion, Mittel 1991 bis 2020
Further reading
Service and location details
Whether you want to go deeper into the service, explore the location context or compare projects in nearby regions – here is where you continue.
Service
PV installation – service overview
Execution, ownership and typical project types at a glance.
Location
Canton Wallis – overview
Regional incentives, grid operators and framework conditions in Canton Wallis.
Service
Solar system installation
The right next step for full projects with grid-operator and commissioning focus.
Hub
Location overview
More regions and locations at a glance.
Guide
PV solar obligation in Valais
Classify 20 W/m², the 30 kW cap, 500 m² roofs and roof-renovation exemptions under the cantonal Energy Act and Ordinance.
Guide
PV feed-in payment in Valais
Separate EnBAG summer and winter rates, HKNs, TOP-40 and federal minimum payments for the 2026 profitability calculation.
Nearby regions
The same service in other regions
Vigorek delivers this service in neighbouring cantons and municipalities too. Depending on location, subsidies and conditions can vary – a comparison is worthwhile.