Zurück Zurück zu Rechner
☀️

Solaranlage ROI-Rechner — Kostenloses Online-Tool

Amortisationszeit + Lebenszeit-Ersparnis deiner Solaranlage

Berechne die Rentabilität deiner Solaranlage — Amortisationszeit, 25-Jahres-Ersparnis, CO2-Einsparung. Mit Systemkosten, Strompreis, Jahresertrag.

$
$/kWh
%
$/kWh
%
Payback period
—
25-year net savings
$—
ROI
—%
CO₂ avoided / year
— kg
📊 25-year breakdown
YearkWhSavingsCumulative
📚
Mehr erfahren

Free solar panel ROI calculator — 25-year projection

Calculate your solar panel return on investment. Payback period, lifetime savings, ROI, and CO2 offset. Factors self-consumption ratio, degradation, and feed-in tariffs.

How to use this tool

  1. 1

    Enter system cost

    Total installed cost after government rebates/credits.

  2. 2

    Annual production

    kWh your system generates per year. Your installer quotes this. Typical: 1000-1500 kWh/kWp in EU, 1400-1800 in US.

  3. 3

    Electricity rate

    What you pay per kWh from the grid. Rising rates = faster payback.

Frequently Asked Questions

Typical solar payback period?
6-12 years in most markets. Depends on: system cost, subsidies, electricity rate, sun exposure, self-consumption rate. Germany: 8-14 years. Spain/Italy: 5-8 years. Sunny US states: 6-10 years.
Do panels last 25 years?
Yes, most manufacturers warranty 80-90% output after 25 years. Real-world degradation ~0.5%/year. Inverter typically needs replacement around year 12-15 (budget $1-3K for that).
Self-consumption vs feed-in?
Self-consumed power saves you retail rate ($0.20-0.40/kWh in EU). Fed-back to grid earns wholesale rate ($0.04-0.10/kWh). Higher self-consumption = faster payback. Battery storage helps.
What about batteries?
Add $5-15K. Increases self-consumption from 30-40% to 70-80%. Payback typically adds 3-5 years to total but makes you more energy-independent.
Government incentives?
Germany: KfW loans, Einspeisevergütung, no VAT on residential. US: 30% federal ITC + state/utility rebates. UK: Smart Export Guarantee. Italy: ecobonus 50%. Always check latest — these change yearly.

Wichtigste Punkte

  • Solar Panel ROI Rechner is a free, browser-based calculator tool — payback period + lifetime savings of solar panels.
  • Nein signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Solar Panel ROI Rechner

  1. Open the tool: Launch Solar Panel ROI Rechner on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Solar Panel ROI Rechner — Quick Facts

Preis
Kostenlos — keine Limits, kein Wasserzeichen, keine Paywall
Privatsphäre
Wird im Browser verarbeitet. Tools, die einen externen Dienst brauchen, sagen das auf der Seite. Seitenaufrufe werden gezählt (Google Analytics).
Plattform
Jeder moderne Browser — Desktop, Tablet, Mobil
Kategorie
Rechner Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
MerkmalDetails
ToolSolar Panel ROI Rechner
KategorieRechner
Anmeldung nötigNein
Datei-UploadKeine — wird im Browser verarbeitet
Mobile-UnterstützungVoll responsive
KostenFür immer kostenlos

Why Use Solar Panel ROI Rechner?

You should try Solar Panel ROI Rechner for a quick, private way to payback period + lifetime savings of solar panels. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

You might also like

🔒
100% Privatsphäre. Dieses Tool läuft komplett in deinem Browser. Deine Daten werden niemals auf einen Server hochgeladen.