Solar Panel Calculator for Brazil
Brazil has one of the world's fastest-growing distributed-solar markets, with strong sun and high tariffs. This free solar calculator estimates your system size, payback and savings in reais using local rates and sun hours.
Calculate my solar payback in Brazil →
Solar at a glance in Brazil
Strong sun and high tariffs mean payback is often in the roughly 3–6 year range for grid-tied homes.
| Currency | Brazilian reais (BRL) |
|---|---|
| Typical electricity rate | R$ 1 per kWh |
| Installed cost | ≈ R$ 12 per watt |
| Peak sun hours | ≈ 5.2 hours/day |
| Export / buyback | ≈ R$ 0 per kWh |
Indicative 2026 starting points — every figure is editable in the calculator, and results depend on your own bill, roof and installer quotes.
A typical 5 kW system in Brazil
At around R$ 12 per watt, a 5 kW rooftop system costs roughly R$ 60,000 and produces about 7,402 kWh in its first year at Brazil's 5.2 peak sun hours a day. Your real numbers depend on your roof, shading, panel choice and how much power you use during the day — run your own figures in the calculator to see your exact payback, net savings and ROI.
How the solar calculator works
- Your setup. Brazil and Brazilian reais are pre-selected, with local electricity rate, install cost and sun hours filled in. Enter your monthly bill, or size the system from your appliances.
- Your roof. Search your address or tap “use my location”, then draw your roof on the satellite map — or just type its area. We check the system fits and read local sun hours from NASA data.
- Your results. Instantly see your payback period, net savings, ROI, system size, year-1 production and lifetime CO₂ offset — compare cash vs. a loan, and download a PDF report.
Common questions — solar in Brazil
How many solar panels do I need in Brazil?
It depends on your electricity use, roof space and local sun hours (about 5.2 peak sun hours/day here). A 5 kW system of high-wattage panels is a common starting point for a home — enter your bill or appliances and the calculator gives your exact panel count and system size.
Does Brazil have net metering?
Brazil's net-metering system (SCEE) credits exported energy against consumption, though Law 14.300 is gradually introducing charges on the grid portion — so terms depend on when you connect. The calculator models your buyback rate.
Are there solar subsidies or incentives in Brazil?
There is no broad cash subsidy; high retail tariffs and net credits are what drive Brazil's rapid adoption.
How much does a solar system cost in Brazil?
A typical 5 kW system is around R$ 60,000 at about R$ 12 per watt installed. The calculator prices your own size.
Work out your system size
Not sure how big a system you need? These guides work back from your monthly usage:
500 kWh/month 1,000 kWh/month 1,500 kWh/month 2,000 kWh/month 2,500 kWh/month 3,000 kWh/month
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