Regional service

Solar Installation Wallis – Planning to Commissioning

Local system fit

For a solar installation in Wallis, success depends not only on module area but on the process: 3D survey, transparent quote, grid-operator coordination and commissioning with full documentation. Vigorek handles the full coordination — from the initial estimate to handover.

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Project profile

Location

Wallis

Service focus

Solar system 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 the full installation secures on site

In Canton Wallis, owners usually want a clear project flow from first assessment to handover rather than a loose mix of subcontractors. That is exactly how we run solar projects – from the pre-check to documented commissioning. From the initial estimate and 3D survey through a transparent quote to full commissioning — one project, one process, one contact.

Initial estimate and 3D survey (drone): roof, orientation, shading, electrical setup and possible constraints — before any quote is prepared.
Transparent quote with clearly separated line items: material, installation, scaffolding, electrical, registration, commissioning — each one individually listed.
Coordination of Pronovo registration, metering concept, grid-operator queries and meter replacement through to full commissioning.
Optional integration of battery storage, wallbox and energy management — only where the usage profile and expansion goals support it.

02Regional framework

Why this canton shifts the priorities

In Valais, major projects like Grands Plans (Alpiq, 10.5 MWp, 2,450 m) and Belalp (IWB, 12 GWh/year, 2,600–2,700 m) drive alpine solar expansion. The federal government subsidises alpine systems with up to 60% of investment costs. The Belalp municipal referendum (November 2024: double yes) shows: transparent project management and community involvement are the key to realisation in the Valais Alps. 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. Vineyard agri-PV as innovation.

In Canton Wallis, a pre-check saves time when permits, metering or electrical setup are not standard.
Owners want traceable quotes instead of aggressive package promises.
A documented commissioning reduces later questions and service overhead.

03Project logic

How coordination makes the difference

Pre-check for roof, shading, electrical setup and potential constraints.
Coordination of registration, metering concept and commissioning.
Clean handover with traceable documentation for operations and service.

Regional context

Solar system 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

A complete solar installation depends on sequencing, grid-operator coordination, electrical planning and clean commissioning.

Grid & registration

For Canton Wallis, grid operators such as EnBAG, EW Obergoms, metering concept and commissioning are aligned early.

Decision reason

In Canton Wallis, a pre-check saves time when permits, metering or electrical setup are not standard.

Execution

Pre-check for roof, shading, electrical setup and potential constraints.

Economic frame

Feed-in tariff and self-consumption are matched to the property; in the canton, Referenzmarktpreis BFE (Q1 2026 ca. 10.27 Rp./kWh), Mindestvergütung 6 Rp./kWh bis 30 kW, zzgl. ca. 1.5 Rp./kWh HKN (EW Obergoms / EnBAG, quartalsweise angepasst) 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.

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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: 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). 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. 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!

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

Solar installation – service overview

The complete flow from first assessment to commissioning.

Location

Canton Wallis – overview

Regional incentives, grid operators and framework conditions in Canton Wallis.

Service

PV installation

The right entry point for execution and mounting topics.

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

Solar Installation Bern – Planning to Commissioning

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

Solar Installation Freiburg – Planning to Commissioning

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

Solar Installation Uri – Planning to Commissioning

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.