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Calculateur ROI Panneaux Solaires — Outil en ligne gratuit

Période de retour + économies sur 25 ans de tes panneaux

Calcule le ROI panneaux solaires : période de retour, économies sur 25 ans, CO2 évité. Entre coût du système, tarif électricité, production.

$
$/kWh
%
$/kWh
%
Payback period
—
25-year net savings
$—
ROI
—%
CO₂ avoided / year
— kg
📊 25-year breakdown
YearkWhSavingsCumulative
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En savoir plus

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.

À retenir

  • Solar Panel ROI Calculateur is a free, browser-based calculator tool — payback period + lifetime savings of solar panels.
  • Non signup, no downloads, no file uploads. Outils 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 Calculateur

  1. Open the tool: Launch Solar Panel ROI Calculateur on Outilolis — 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 Calculateur — Quick Facts

Prix
Gratuit — sans limites, sans filigrane, sans paywall
Confidentialité
Traité dans votre navigateur. Les outils qui ont besoin d’un service externe l’indiquent sur la page. Les visites sont comptabilisées (Google Analytics).
Plateforme
Tout navigateur moderne — desktop, tablette ou mobile
Catégorie
Calculateur Outils on Outilolis
Hors ligne
Works offline after first visit (Progressive Web App)
CaractéristiqueDétails
OutilSolar Panel ROI Calculateur
CatégorieCalculateur
Inscription requiseNon
Téléversement de fichierAucun — traité dans le navigateur
Compatible mobileEntièrement adaptatif
CoûtGratuit pour toujours

Why Use Solar Panel ROI Calculateur?

You should try Solar Panel ROI Calculateur 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.

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100% Confidentialité. Cet outil fonctionne entièrement dans votre navigateur. Vos données ne sont jamais envoyées à un serveur.