Calculadora de Consumo em Standby
Calcule quanto custa o consumo em standby dos seus aparelhos.
Annual Standby Cost
98.55 USD
Annual Standby Cost vs Electricity Rate
Formula
How to Calculate Standby Power Cost
Standby power (phantom load) is electricity consumed by devices when they are turned off but still plugged in.
Formula
Annual kWh = Devices * Avg Standby Watts * 8,760 hours / 1,000
Annual Cost = Annual kWh * Rate
Common Standby Draws
Exemplo Resolvido
15 devices averaging 5W standby power at $0.15/kWh.
- 01Total standby: 15 * 5 = 75 watts
- 02Annual kWh: 75 * 8,760 / 1,000 = 657 kWh
- 03Annual cost: 657 * $0.15 = $98.55
- 04Monthly cost: $98.55 / 12 = $8.21
Perguntas Frequentes
How much does standby power cost the average home?
The average US home spends $100-200 per year on standby power, accounting for 5-10% of total electricity use. The Department of Energy estimates standby power costs US consumers $19 billion annually.
How can I reduce standby power?
Use power strips to cut power to groups of devices, unplug chargers when not in use, choose Energy Star devices with low standby draw, and use smart plugs with scheduling.
Which devices have the highest standby draw?
Cable and satellite boxes (15-30W), older gaming consoles (10-25W), and desktop computers in sleep mode (5-15W) are among the worst offenders.