Solar System in Solothurn: Subsidies & Costs 2026
Calculate your solar subsidy in Solothurn. Pronovo EIV, cantonal contributions and tax deductions for PV systems in Canton Solothurn.
Subsidies in Solothurn
Federal Subsidy (Pronovo)
One-time payment (EIV) for all solar systems in Solothurn.
Cantonal Subsidy Solothurn
Federal subsidy only.
Tax Benefit in Solothurn
Investments in solar systems are tax-deductible (property maintenance).
Costs & Installation
What does a system cost in Solothurn?
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 Solothurn | — | 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 Solothurn
How much is the solar subsidy in Solothurn in 2026?
Which installation companies operate in Solothurn?
Do I need a building permit for a solar system in Solothurn?
How long is the payback period in Solothurn?
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.