Electricity Unit Calculation Formula
- E = P × t ÷ 1000
Where:
- E = Energy consumed in kilowatt-hours (kWh or units).
- P = Power of the appliance in watts.
- t = Time the appliance is used (in hours).
Step-by-Step Guide to Calculate Units
- Find the Appliance's Wattage:
-
Check the power rating (in watts) on the appliance label or manual.
-
Determine Usage Duration:
-
Note how many hours a day the appliance is used.
-
Apply the Formula:
- Multiply the appliance's wattage by its daily usage in hours.
- Divide by 1,000 to convert watts into kilowatt-hours (units).
Example Calculation
Appliance: 100-watt ceiling fan
Daily Usage: 5 hours
- Daily Units = (100 × 5) ÷ 1000 = 0.5 units
- Monthly Units = 0.5 × 30 = 15 units
Cost Per Unit
To calculate the total cost, use:
- Total Cost = Units Consumed × Rate per Unit
Example:
- Units consumed = 15
- Rate per unit =5
Total Cost = 15 ×5 =75
Cost Per Unit Production Formula
To calculate how much each unit costs to produce:
- Cost per Unit = (Total Fixed Costs + Total Variable Costs) ÷ Total Units Produced
Key Tips
- For multiple appliances, calculate the units for each appliance separately and sum them up.
- Use a smart meter or online calculator for accurate tracking.
- Factor in local tariff slabs to calculate costs for higher usage levels.
By using these methods, you can monitor your electricity consumption and optimize your energy usage effectively!
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