For homeowners

Solar installation for detached house: costs, size and benefits

A solar installation is one of the most profitable investments for Swiss homeowners — with rising electricity prices and available subsidies.

Significantly reduce electricity costs

Increase energy independence

Increase property value

Use sustainable energy directly from your roof

Calculation example — 10 kWp

Roof area60 m²

Output10 kWp

Costsapprox. CHF 25'000 – 30'000

OTP subsidyapprox. CHF 3'600

Net costsapprox. CHF 20'000 – 26'000

Price overview

Costs by size

Small installation (6–8 kWp)

approx. CHF 20'000 – 25'000

PopularStandard (8–10 kWp)

approx. CHF 25'000 – 30'000

Larger installation (10–15 kWp)

approx. CHF 30'000 – 35'000

Gross costs before subsidies. The OTP reduces costs by approximately CHF 300–400/kWp.

Custom calculation

Calculate your installation

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.

Cost factors

What influences the price?

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.

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