Skip to content

Regional service

PV Installation Wallis – Roof & Electrical

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.

Local system fit

Valais has the highest solar irradiation in Switzerland – Sion counts over 2,100 sunshine hours per year. EW Obergoms compensates up to 25.63 Rp./kWh, the highest tariff in Switzerland. Alpine systems deliver 40–50% of annual production in winter – strategically decisive for national supply security. 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.

Request projectOpen service overview

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.

01Service focus

What really matters for installation on site

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. 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, measurement protocol, photos – everything needed for acceptance, grid operator and future service.
02Regional framework

Why this canton shifts the priorities

Valais has the highest solar irradiation in Switzerland – Sion counts over 2,100 sunshine hours per year. EW Obergoms compensates up to 25.63 Rp./kWh, the highest tariff in Switzerland. Alpine systems deliver 40–50% of annual production in winter – strategically decisive for national supply security. Extreme conditions (wind, snow, UV) require mounting structures and installation details that exceed lowland standards. Valais: the solar superlatives. ~2,000 sun hours (sunniest canton). Alpine radiation at 2,000m = up to 300 kWh/m²/year (comparable to southern Spain!). Gondosolar: 1,500 solar trees, 18 million kWh/year, 55% winter share. EW Obergoms: 25.63 Rp./kWh highest CH tariff. 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.
03Project logic

How roof, installation and electrical work fit together

In Valais, solar systems are fully tax-deductible as energy-saving investments. The high solar irradiation ensures short payback periods of often only 8–10 years – the tax deduction further accelerates this. Mounting structure and scaffolding planned around roof type and access.

  • 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, bis 25.63 Rp./kWh (EW Obergoms) 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 the highest solar irradiation in Switzerland – Sion counts over 2,100 sunshine hours per year. Alpine systems like those on the Muttsee dam wall or at Gornergrat demonstrate the enormous potential for winter electricity production in the Valais Alps.

Valais has the highest solar irradiation in Switzerland – Sion counts over 2,100 sunshine hours per year. EW Obergoms compensates up to 25.63 Rp./kWh, the highest tariff in Switzerland. Alpine systems deliver 40–50% of annual production in winter – strategically decisive for national supply security. Extreme conditions (wind, snow, UV) require mounting structures and installation details that exceed lowland standards.

Open regionAll locations

Tax and subsidy logic

In Valais, solar systems are fully tax-deductible as energy-saving investments. The high solar irradiation ensures short payback periods of often only 8–10 years – the tax deduction further accelerates this. Solar obligation for new buildings: since 1.1.2023, buildings >300m² floor area must equip 40% of building area with solar. EW Obergoms: up to 25.63 Rp./kWh — highest feed-in tariff in Switzerland! Mainly thermal subsidies at cantonal level.

Permits and energy law

Solar obligation: new buildings >300m² floor area must have 40% solar equipment (since 1.1.2023). Gondosolar and 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: the solar superlatives. ~2,000 sun hours (sunniest canton). Alpine radiation at 2,000m = up to 300 kWh/m²/year (comparable to southern Spain!). Gondosolar: 1,500 solar trees, 18 million kWh/year, 55% winter share. EW Obergoms: 25.63 Rp./kWh highest CH tariff. 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

~2'000h SONNIGSTER Kanton der Schweiz!

Further reading

What genuinely helps you from here.

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.

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.

Primary

PV Installation Bern – Roof & Electrical

Canton Bern: Bern has one of the highest installed PV capacities per capita in Switzerland. The Bernese Oberland offers particularly high winter yields thanks to altitude and snow reflection – ideal for year-round solar production. Here owners can find the services that matter most for planning, installation and commissioning in this region.

Secondary

PV Installation Freiburg – Roof & Electrical

Canton Freiburg: Fribourg is a link between German and French-speaking Switzerland – also in energy policy. The University of Fribourg actively researches solar technologies, and the Sense-Oberland region offers particularly good solar yields thanks to its pre-alpine exposure. Here owners can find the services that matter most for planning, installation and commissioning in this region.

Secondary

PV Installation Uri – Roof & Electrical

Canton Uri: The Uri valley floor benefits from a Foehn-favoured climate with above-average sunshine hours. At altitudes above 1,000 m, PV yields increase by up to 20% compared to the midlands thanks to cold and reflection. Here owners can find the services that matter most for planning, installation and commissioning in this region.