What is a Unit?
One unit of electricity is the amount of energy consumed by a 1000 watt appliance for 1 hour.
1 Unit = 1 kWh
1. Power Consumption of Common Electrical Appliances (Watt)
| Appliance | Power |
|---|---|
| LED Bulb | 9W |
| Ceiling Fan | 75W |
| Tube Light | 40W |
| LED TV | 100W |
| Refrigerator | 150W |
| Washing Machine | 500W |
| Mixer Grinder | 500W |
| Water Pump | 750W |
| Iron | 1000W |
| Microwave Oven | 1200W |
| Geyser | 2000W |
| AC (1.5 Ton) | 1500W |
2. How to Calculate Electricity Units?
Formula
Electricity Units (kWh) = Power (Watt) × Time (hours) ÷ 1000
Important
1 Unit (kWh) = 1 Kilowatt-hour = 1000 Watt-hours
Example
If a 75W fan runs for 10 hours:
Units used = (75 × 10) ÷ 1000
= 0.75 Unit (kWh)
Therefore
1 Unit costs ₹7.00
So, the cost for 0.75 unit = 0.75 × 7 = ₹5.25
3. Electricity Bill Calculation (Example)
| Appliance | Power (W) | No. of Units per Day | Daily Energy (kWh) | Per Unit Rate (30 days) | Electricity Bill (₹) |
|---|---|---|---|---|---|
| LED Bulb | 9 | 5 | 0.045 | 1.35 | ₹9.45 |
| Ceiling Fan (75W) | 75 | 10 | 0.75 | 22.5 | ₹157.50 |
| Refrigerator (100W) | 100 | 4 | 0.40 | 12 | ₹84.00 |
| Geyser (150W) | 150 | 24 | 3.60 | 108 | ₹756.00 |
| Total | 143.85 | ₹1006.95 |
4. Tips to Reduce Electricity Bills
- Use LED bulbs, which consume less power.
- Turn off lights and fans when not in use.
- Use 5 Star rated appliances.
- Set AC temperature to 24°C (75°F).
- Choose energy-efficient appliances.
- Use natural light during the day.
SAVE ENERGY, SAVE MONEY
- Reduce your electricity usage.
- Adopt energy-efficient habits for a better future.
Small Steps, Big Savings
