For homeowners

Solar installation for detached house: costs, size and benefits

A solar installation reduces your electricity costs and makes you more independent. A typical detached house is equipped with 8–12 kWp — that's approximately 50–70 m² of roof area.

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8–12 kWp

Typical system size

25,000–30,000

CHF investment

9,000–11,000

kWh production/year

25–30 years

Lifespan

Size calculator

How large should your solar installation be?

The optimal size depends on electricity consumption. As a rule of thumb: 1,000 kWh consumption → approx. 1–2 kWp system.

If you have a heat pump or an electric car, a larger system is often worthwhile. Use the calculator to get a first recommendation.

Interaktiv

Wie gross sollte Ihre Anlage sein?

Wählen Sie Ihren Jahresverbrauch und Optionen.

Jahresverbrauch

Zusätzliche Verbraucher

Empfehlung für Ihren Haushalt

Gesamtverbrauch: 4'500 kWh/Jahr

Anlagengrösse

4–4.7 kWp

Dachfläche

20–28 m²

Investition

9'000–13'000 CHF

Förderung EIV

ca. 1'600 CHF

Richtwerte. Für eine genaue Berechnung empfehlen wir eine kostenlose Offerte.

Costs

What does a solar installation for a detached house cost?

For a typical 10 kWp system with around 50 m² of roof area, investments of approximately CHF 25,000 to 30,000 are realistic. After subsidies and tax deductions, the effective price can be significantly lower.

System sizeGuide price

Small installation (6–8 kWp)approx. CHF 20,000 – 25,000

Standard (8–10 kWp)approx. CHF 25,000 – 30,000

Larger installation (10–15 kWp)approx. CHF 30,000 – 35,000

Solar installation detached house Switzerland

Electricity production

How much electricity does a solar installation produce?

A typical installation on a detached house produces approx. 9,000 – 11,000 kWh per year — covering the majority of a household's electricity needs.

8 kWp system7,200 – 8,800 kWh/year

10 kWp system9,000 – 11,000 kWh/year

12 kWp system10,800 – 13,200 kWh/year

Profitability

Is a solar installation for a detached house worth it?

Yes, in most cases a photovoltaic installation is worthwhile in the long run. Through self-consumption and subsidies, the system pays for itself over the years.

Significantly reduce electricity costs

Increase energy independence

Increase property value

Use sustainable energy directly from your roof

Subsidies

Subsidies for solar installations in Switzerland

For a 10 kWp system, the federal subsidy amounts to approximately CHF 3,600. Additional cantonal subsidies and tax deductions also apply.

One-time payment (OTP) from the federal government: approx. CHF 360/kWp

Additional cantonal subsidy programmes

Tax deductions at federal level

View all subsidies

Investment (10 kWp)CHF 25,000 – 30,000

Federal OTP subsidy– CHF 3,600

Cantonal subsidyvaries

Tax deductionsvaries

Net costsapprox. CHF 20,000 – 26,000

Battery storage

With or without battery storage?

Without storage

More affordable option

Lower upfront investment

Faster payback

Self-consumption approx. 25–40%

With battery storage

Recommended for high consumption

Self-consumption up to 50–65%

Use electricity in the evening too

Greater independence

Learn more about battery storage

Cost factors

What factors influence the costs?

Roof size and orientation

South-facing roofs deliver the best performance. East/west roofs are also very suitable.

System size

Larger systems are cheaper per kWp — economies of scale affect the price.

Technology and components

Modules, inverters and optional storage influence costs and performance.

Installation effort

Complex roofs or difficult access increase the installation effort.

Calculation example

Example: Solar installation for a detached house

Roof area60 m²

Output10 kWp

Costsapprox. CHF 25,000 – 30,000

OTP subsidyapprox. CHF 3,600

Net costsapprox. CHF 20,000 – 26,000

FAQ

Frequently asked questions about solar installations for detached houses

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Solar installation prices vary greatly depending on the provider. Via PVPro you receive up to 3 free quotes from certified installers in your region.

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