Have you ever wondered whether your fan consumes more power or your laptop, and how your electricity bills are calculated?
Electricity is billed in Kilo Watt Hours (kWh). One unit is one kWh. One unit of electricity on an average costs around INR 4 to 6 for domestic users. You can also find the same in your electricity bill: Wattage (in kW, 1kW = 1000 watts) of an appliance multiplied by the duration it runs for, will give you the kWh value.
For example, if you run a 100 watts (=0.1kW) fan for 10 hours, the energy consumed = 0.1kW X 10 hours = 1 kWh or 1 unit or INR 5 if your electricity cost is INR 5 per unit.
How To Check
The best way to check how much an electrical appliance consumes is to check for a label at the back of the appliance. It is usually mentioned in ‘Watts’ or ‘W’. Some appliances will have only the current consumption value mentioned in Amperes (Amps or A). Along with this, the voltage (in volts or V) of the appliance is also mentioned. Voltage X Amperes = Watts. For example, a mobile charger rated at 5V and 2A consumes 5 X 2 = 10 watts. Please note that most non-computing electrical appliances, such as fans, lights, ACs, Geysers run on 220V.
Newer appliances rated by Bureau of Energy Efficiency (BEE) have a sticker on them, mentions the power consumption in watts.
Rough Estimate Of Power Consumption Of Appliances:
- Ceiling Fan – 80 watts
- Tube light – 40 watts
- Incandescent bulb – 100 watts
- CFL – 10-25 watts
- LED – 5-18 watts
- Refrigerator – 250 watts
- Air Conditioner (1.5 ton) – 1600 watts
- TV – 150 watts
- Electric Iron – 750 watts
- Laptop – 50 watts
- Desktop PC – 300 watts
- Washing Machine – 400 watts
- Microwave oven – 1000 watts
- Induction cooker – 2000 watts
- Mixer grinder – 750 watts
- Water pump – 750 watts
Please note that these are very average numbers. Efficient appliances can consume a lot less, and non-efficient ones can consume much more. Checking the wattage of every appliance will help you keep a tab on your electricity bills. Feel free to ask us about any doubts in the comments section, and remember to shop for 5 star rated energy efficient appliances 🙂