To calculate daily energy consumption for electrical devices, use this formula: Energy (kWh) = (Wattage × Hours Used Per Day) ÷ 1000.
Step-by-Step Process
- Identify appliance wattage (usually labeled on the device or found online).
- Estimate daily usage hours (e.g., refrigerator runs 8 hours/day despite being plugged in 24/7 due to compressor cycles).
- Plug values into the formula:
- Example: 150W refrigerator × 8 hours ÷ 1000 = 1.2 kWh/day.
Additional Considerations
- Annual costs: Multiply daily kWh by 365, then by your utility’s kWh rate (e.g., $0.15/kWh).
- For human energy needs (calories), TDEE calculators like tdeecalculator.net estimate daily calorie burn using BMR and activity levels.
Example Comparisons
| Appliance | Wattage | Daily Use | Daily Consumption |
|---|---|---|---|
| Air Conditioner | 1500W | 6 hours | 9 kWh |
| LED Bulb | 10W | 5 hours | 0.05 kWh |
Use ENERGY STAR-certified appliances and precise usage tracking to improve accuracy.
Original article by NenPower, If reposted, please credit the source: https://nenpower.com/blog/how-do-i-calculate-my-daily-energy-consumption/
