Photovoltaic Calculator
Calculate the yield and profitability of your solar system. With self-consumption, feed-in tariff and payback period. With current 2026 electricity prices,.
Total Cost
14.000,00 €
10,0 kWp x 1.400,00 €
Annual Yield
10.000 kWh
Self-Consumption: 3.000 kWh |Feed-in: 7.000 kWh
Annual Savings
1.612,10 €
in the first year
Payback Period
approx. 8,9 years
Profit after 20 Years
16.755,49 €
Total Savings: 30.755,49 €
CO2 Savings (20 Years)
76,3 t
approx. 400 g/kWh electricity mix
Note: This calculation is for guidance only. Actual yields depend on roof pitch, orientation, shading, and other factors. Electricity price changes and maintenance costs are not included. Feed-in tariff according to EEG 2024 for systems up to 10 kWp.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
Frequently Asked Questions
Is a solar system still worthwhile?
Yes, solar systems typically pay for themselves in 8-12 years. With current electricity prices and falling module costs, the return on investment is 5-8%. Since 2023, there is no VAT on residential systems up to 30 kWp.
How much does a photovoltaic system cost?
A typical residential system (5-10 kWp) costs 8,000-15,000 euros including installation. With a battery storage (5-10 kWh), add another 5,000-10,000 euros. Prices have fallen significantly in recent years.
What is the Photovoltaic Calculator?
The photovoltaic calculator computes the yield, self-consumption, feed-in tariff and financial viability of a solar system for your roof.
How does the Photovoltaic Calculator work?
Enter the system capacity, location and roof orientation. The calculator determines the annual yield, self-consumption share and feed-in revenue. The payback period is calculated from investment costs and annual income.
Key Data and Facts
Feed-in tariff 2025 (partial feed-in up to 10 kWp): 8.03 ct/kWh. System costs: 1,200-1,800 euros/kWp. VAT exemption for PV up to 30 kWp. Yield in Germany: 900-1,100 kWh/kWp.
Step-by-Step Guide
How to calculate die Wirtschaftlichkeit einer long-term care insurance (PV)-Anlage step by step: 1. Anlagengroesse bestimmen: Messen Sie die nutzbare Dachflaeche. Pro kWp werden ca. 5-7 m2 benoetigt. 2. Jahresertrag schaetzen: In Deutschland erzeugt eine optimal ausgerichtete Anlage ca. 900-1.100 kWh pro kWp. Sueddeutschland liegt hoeher als Norddeutschland. Dachausrichtung: Sueden ideal, Ost/West ca. 15-20 % weniger. Dachneigung: 30-35 Grad optimal. 3. Eigenverbrauchsanteil festlegen: Ohne Speicher ca. 25-35 %, mit Batteriespeicher ca. 50-70 %. 4. Einnahmen calculate: Eigenverbrauch: Ersparnis = Eigenverbrauch-kWh x Strompreis (ca. 0,37 EUR/kWh). Einspeisung: Verguetung = eingespeiste kWh x Einspeiseverguetung (8,03 ct/kWh bei Teileinspeisung bis 10 kWp). 5. costs kalkulieren: Investition ca. 1.200-1.800 EUR/kWp. Seit 2023 keine VAT auf long-term care insurance (PV)-Anlagen bis 30 kWp. Betriebskosten ca. 1-2 % der Investition pro year. 6. Amortisation: Typisch 9-14 Jahre.
Calculation Example
10-kWp-Anlage, Standort Muenchen, Suedausrichtung: Jahresertrag ca. 10.500 kWh. Eigenverbrauch 30 % (3.150 kWh x 0,37 EUR = 1.166 EUR). Einspeisung 70 % (7.350 kWh x 0,0803 EUR = 590 EUR). Jaehrlicher Ertrag: 1.756 EUR. Investition: 15.000 EUR. Amortisation: ca. 8,5 Jahre.
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