Solar System in Herisau: Subsidies & Costs 2026
Calculate your solar subsidy in Herisau. Pronovo EIV, cantonal contributions and tax deductions for PV systems in Canton Appenzell Ausserrhoden.
Subsidies in Herisau
Federal Subsidy (Pronovo)
One-time payment (EIV) for all solar systems in Herisau.
Cantonal Subsidy Appenzell Ausserrhoden
Until Aug 2025: 100% EIV doubling. From Sep 2025: 50% EIV bonus.
Tax Benefit in Herisau
Investments in solar systems are tax-deductible (property maintenance).
Costs & Installation
What does a system cost in Herisau?
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 Appenzell Ausserrhoden | 1,800 | Until Aug 2025: 100% EIV doubling. From Sep 2025: 50% EIV bonus. |
| Tax Savings (approx.) | 7,000 | Approx. 28% of CHF 25,000 investment |
| Total subsidy (estimated) | 12,400 | 50% 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 Herisau
How much is the solar subsidy in Herisau in 2026?
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Do I need a building permit for a solar system in Herisau?
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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.