Quilowatt-Hora Auditoria
Acompanhe a pegada do seu equipamento elétrico. Entenda exatamente quanta energia seus dispositivos consomem ao longo do tempo.
Perfil de Consumo
Potência e Tempo de Uso
O quilowatt-hora é a unidade padrão usada por empresas de energia em todo o mundo.
Fórmula: (Watts × Horas) ÷ 1000 = kWh
O resultado é atualizado em tempo real à medida que você insere os parâmetros.
A Fórmula do kWh
Quilowatts-hora são a unidade padrão de energia na sua conta de luz — calculada a partir da potência e do tempo.
Consumo de Energia
kWh = Watts × Hours ÷ 1000 Divida por 1000 para converter watts-hora (Wh) em quilowatts-hora (kWh) — a unidade de faturamento usada pela sua concessionária.
Consumo Mensal
Monthly kWh = Daily kWh × 30 Multiplique seu uso diário de energia por 30 dias para estimar o consumo mensal para planejamento de orçamento.
Understanding Kilowatt-Hours (kWh)
A kilowatt-hour (kWh) is the amount of energy consumed by a 1,000-watt device running for one hour. It's the universal unit on electricity bills worldwide. Understanding kWh helps you identify your biggest energy consumers, compare appliances, calculate solar payback periods, and predict your monthly bills before they arrive.
kWh vs. kW: What's the Difference?
kW (kilowatts) measures the rate of power use — like speed on a speedometer. kWh measures the total energy used over time — like the distance odometer. A 2kW heater running for 3 hours uses 6 kWh. Your electricity bill charges for kWh, not kW.
Energy Usage by Common Appliances
- LED Bulb (10W, 8hrs/day): 0.08 kWh/day → ~2.4 kWh/month
- Refrigerator (150W avg, 24hrs): 3.6 kWh/day → ~108 kWh/month
- Electric Oven (2400W, 1hr/day): 2.4 kWh/day → ~72 kWh/month
- Central Air Conditioning (3500W, 8hrs): 28 kWh/day → ~840 kWh/month
- EV Charging (7.4kW, 2hrs/night): 14.8 kWh/day → ~444 kWh/month
How to Reduce Your kWh Consumption
- Audit Your Biggest Consumers: Heating, cooling, and water heating typically account for 60–70% of home energy use. Target these first.
- Switch to LED Lighting: LEDs use 75–80% less energy than incandescent bulbs for the same light output.
- Use Smart Power Strips: Eliminate standby ("vampire") power from electronics that draw power even when off.
- Optimize HVAC Scheduling: Every 1°C reduction in thermostat setback saves approximately 3% on heating energy.
- Install Solar PV: Offset your kWh consumption with on-site generation — typically the most cost-effective long-term reduction strategy.