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Solar Panel Payback Calculator

When does your solar system pay off? Enter installation cost, output, self-consumption rate and feed-in tariff – the calculator shows you the break-even point and total savings over 20 years in seconds.

✓ Verificado por Julian Bronski · atualizado junho de 2026

Os seus dados

▾
EUR
1000200000+
kWp
1100+
kWh
5001400+
%
0100+
EUR
0.051.5+
EUR
00.5+

Resultado

Break-even (years)
–
Annual return (€)
–
Total savings over 20 years
–
✓ Copiado!
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Como funciona a Solar Panel Payback Calculator

Annual yield (kWh) = kWp × yield/kWp. Of this, self-consumption % goes directly to the household (saving = kWh × electricity price), the rest is exported (income = kWh × feed-in tariff). Break-even = cost ÷ annual return (€).

Perguntas frequentes

What is a typical annual yield? ▾
In Central Europe, yield ranges from 800–1,100 kWh per kWp depending on location. Southern regions get more sun; northern areas typically yield 850–950 kWh/kWp.
What feed-in tariff should I enter? ▾
Feed-in tariffs vary by country: Germany ~8 ct/kWh (EEG 2024), Austria ~8–10 ct/kWh, Switzerland varies by canton. Check your local energy provider for the current rate.
How do I increase self-consumption? ▾
Without a battery, self-consumption is typically 25–35%. Adding a home battery storage system raises it to 60–80%, dramatically improving returns since electricity costs (€0.30+/kWh) far exceed feed-in rates.
How much does a 10 kWp system cost? ▾
In Germany, a 10 kWp system currently costs around €12,000–18,000 including installation. With a battery storage system (€8,000–12,000 extra), costs rise but so does self-consumption.

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