Solar System in Onex: Subsidies & Costs 2026
Calculate your solar subsidy in Onex. Pronovo EIV, cantonal contributions and tax deductions for PV systems in Canton Genf.
Subsidies in Onex
Federal Subsidy (Pronovo)
One-time payment (EIV) for all solar systems in Onex.
Cantonal Subsidy Genf
Up to CHF 4,500 direct subsidy. Additional up to CHF 3,000 for battery storage.
- Base amount CHF 4500
Tax Benefit in Onex
Investments in solar systems are tax-deductible (property maintenance).
Costs & Installation
What does a system cost in Onex?
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 Genf | 4,500 | Up to CHF 4,500 direct subsidy. Additional up to CHF 3,000 for battery storage. |
| Tax Savings (approx.) | 7,000 | Approx. 28% of CHF 25,000 investment |
| Total subsidy (estimated) | 15,100 | 60% 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 Onex
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Do I need a building permit for a solar system in Onex?
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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.