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Calculadora de ROI de Energia Solar — Ferramenta online grátis

Período de retorno + economia ao longo da vida de painéis solares

Calcule ROI de painéis solares — período de retorno, economia em 25 anos, compensação CO2. Insira custo do sistema, tarifa e produção anual.

$
$/kWh
%
$/kWh
%
Payback period
—
25-year net savings
$—
ROI
—%
CO₂ avoided / year
— kg
📊 25-year breakdown
YearkWhSavingsCumulative
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Saiba mais

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.

Pontos-chave

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

  1. Open the tool: Launch Solar Panel ROI Calculadora on Ferramentaolis — 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 Calculadora — Quick Facts

Preço
Grátis — sem limites, sem marca d’água, sem paywall
Privacidade
Processado no seu navegador. Ferramentas que precisam de um serviço externo avisam isso na página. As visitas são contadas (Google Analytics).
Plataforma
Qualquer navegador moderno — desktop, tablet ou celular
Categoria
Calculadora Ferramentas on Ferramentaolis
Offline
Works offline after first visit (Progressive Web App)
RecursoDetalhes
FerramentaSolar Panel ROI Calculadora
CategoriaCalculadora
Cadastro necessárioNão
Upload de arquivoNenhum — processado no navegador
Suporte mobileTotalmente responsivo
CustoGrátis para sempre

Why Use Solar Panel ROI Calculadora?

You should try Solar Panel ROI Calculadora 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% Privacidade. Esta ferramenta funciona inteiramente no seu navegador. Seus dados nunca são enviados a nenhum servidor.