Solar System in Monthey: Subsidies & Costs 2026
Calculate your solar subsidy in Monthey. Pronovo EIV, cantonal contributions and tax deductions for PV systems in Canton Wallis.
Subsidies in Monthey
Federal Subsidy (Pronovo)
One-time payment (EIV) for all solar systems in Monthey.
Cantonal Subsidy Wallis
Federal subsidy only. Tax benefits: solar electricity up to 10,000 kWh/year tax-free.
Tax Benefit in Monthey
Investments in solar systems are tax-deductible (property maintenance).
Costs & Installation
What does a system cost in Monthey?
A typical 10 kWp system including installation and connection costs between CHF 22,000 and CHF 28,000. After deducting subsidies, the net costs are significantly reduced.
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Estimated subsidy for a standardised 10 kWp rooftop installation in 2026.
| Subsidy Source | Amount (CHF) | Basis |
|---|---|---|
| Federal Subsidy (Pronovo) | 3,600 | 10 kWp × CHF 360/kWp |
| Canton Wallis | — | Federal subsidy only |
| Tax Savings (approx.) | 7,000 | Approx. 28% of CHF 25,000 investment |
| Total subsidy (estimated) | 10,600 | 42% of investment |
* Calculation basis: 10 kWp rooftop installation, Pronovo rates 2026. Tax savings vary depending on personal tax rate.
Frequently Asked Questions about Solar in Monthey
How much is the solar subsidy in Monthey in 2026?
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Do I need a building permit for a solar system in Monthey?
How long is the payback period in Monthey?
Emir Kovacevic
Emir is a software engineer and specialist in solar building analysis. As founder of Solar Advisor Switzerland, he analyses the latest Pronovo tariffs and cantonal subsidy guidelines daily to provide homeowners with honest, fact-based recommendations.