There is no single national household price.
Rates vary by distributor, residential class, state taxes and billing period. This page uses an official São Paulo reference and keeps it editable.
Compare ANEEL tariff data ↗Brazil electricity cost calculator
Use Brazilian reais, your own tariff, and device-specific operating models—without pretending one national average fits every household.
Billing context
Use the rate that changes with consumption.
Residential tariffs differ by distribution utility and can include energy and network components, taxes, public-lighting charges, and monthly tariff flags. A single Brazil-wide household rate would be misleading.
Verified reference · Confidence A 99/100BRL 0.7894/kWh
B1 conventional residential, São Paulo · Enel SP. Effective 2026-07-04 to 2027-07-03. Your own marginal bill rate remains the better input when your plan differs.
Source: Enel SP tariff table · ANEEL Resolution 3,596/2026 ↗Brazil direct answer
How do you calculate electricity cost in Brazil?
Divide appliance watts by 1,000, multiply by hours and days, then multiply the resulting kWh by your complete R$/kWh bill rate. The starting reference here is R$ 0.78938/kWh for Enel São Paulo B1 conventional residential service before taxes, public-lighting charges and the monthly tariff flag.
Fórmula em portuguêsConsumo (kWh) = potência (W) ÷ 1.000 × horas × diasCusto (R$) = consumo (kWh) × tarifa (R$/kWh)
Appliance scenario30-day energyBase energy cost
Electric shower · 5,500 W · 20 min/day55.0 kWhR$43.42
Air conditioner · 1,500 W · 8h/day · 55% active198.0 kWhR$156.30
Refrigerator · 150 W · 24h/day · 35% active37.8 kWhR$29.84
Ceiling fan · 65 W · 8h/day15.6 kWhR$12.31
These are reproducible examples, not national averages. The reference combines the approved TUSD and TE components for Enel São Paulo. Replace it with the effective rate from your own distributor bill for a household estimate.
Use the flag announced for the billing month.
ANEEL publishes adders per kWh: green adds nothing, while yellow and red flags add progressively more. Do not add the flag twice when your bill-derived rate already includes it.
Check ANEEL tariff flags ↗The base energy tariff is not the whole invoice.
ICMS, PIS/Cofins, public-lighting charges, minimum availability billing and tariff flags can make the effective bill rate higher than the base reference.
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Visible inputs. Reproducible results.
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HowEnergy, tariff, and behavioural assumptions stay separate so readers can replace one input without hiding the others.
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