Regional service
Solar Installation Wallis – Planning to Commissioning
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.
Clarify before quoting
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.
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.
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
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.
Service focus
What the full installation secures on site
Vigorek plans and delivers complete PV systems across all German-speaking cantons: solar modules, inverter, roof installation, electrical coordination and commissioning. Battery storage and a wallbox can be planned around your consumption. Your quote defines the scope and responsibilities.
- 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.
Regional framework
Why this canton shifts the priorities
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.
Project logic
How coordination makes the difference
The order records these steps, responsibilities and required documents. Outstanding assessments belong in the schedule before work begins.
- 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, 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 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.
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!
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
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.
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.