CloudTelecoms Energy Consumption Calculator

Using the below energy calculator you can easily find out the power consumption of electronic devices.

Appliance Power Rating (Watts) Average Daily Usage (Hours) Quantity

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Electrical appliance:
Power Use:
Hours of use per day: h/day
 
Daily Energy Usage : kWh/day
Monthly Energy Usage : kWh/month
Yearly Energy Usage : kWh/year

 

How to calculate the power consumption of an electrical appliance?

To calculate the energy consumption of an electrical appliance in kWh, You need three-parameter.

First One –The wattage of the electrical appliance in watt(i.e. the capacity of the electrical appliance)

Second One-The number of hours you use that the appliance per day.

Third One-The number of days per year(for the yearly calculation) you use when the appliance is in turn on

Power Consumption Calculation Formula

E(kWh/day) = P(in Watts) × Time(number of usage hours per day) / 1000(W/kW)

OR

(the number of hours you use it per day) x (the number of days uses) x ([wattage of the electrical appliance in watt] / 1,000) = kWh(energy consumed by appliance)

If you want to calculate the monthly power consumption by your electrical device then the number of days use=30

The Wattage should be divided by 1,000 because electricity measured in kWh so we need to convert the watts-hour into the kilowatt-hour(watts to kilowatts). This formula finally gives you the number of kWh.

Let’s take an example ,I want to calculate the power consumption of the refrigerator at my house. The refrigerator is turn on all the time so that it uses power continuously.

Number of hours per day – 24 hours

Number of days per year – 365

The wattage of the our Refrigerator is 500 watts

Yearly power consumption of Refrigerator : 24 x 365 x (500 watts / 1,000) = 4380 kWh
Monthly power consumption of Refrigerator : 24 x 30 x (500 watts / 1,000) = 360 kWh

Energy Usage Charts
Type of appliancePower WattsHours/MokWh/Mo
Dishwasher (With Electric Water Heating)150030(1  hours per day)45
Dishwasher (With Non-Electric Water Heating)40030(1  hours per day)12
Coffee machine5007.5(15 Minute  per day)3.75
Coffee Maker9007.5(15 Minute  per day)6.75
Microwave oven8007.5(15 Minute  per day)6
Conventional electric oven20007.5 (15 Minute  per day)15
Refrigerator20030 days144
Type of appliancePower WattsHours/MokWh/Mo
LCD TVOn904  hours per day9.6 kWh
LCD TVIn sleep mode37202.16 kWh
old Plasma TVOn2704  hours per day266.4 kWh
old Plasma TVIn sleep mode37202.16 kWh
LED TVOn304  hours per day3.6 kWh
LED TVIn sleep mode0.3 W7200.216 kWh
Low-energy light bulbs125  hours per day1.8 kWh
Game console903  hours per day8.1 kWh
TVD/ADSL decoder 365 days – continuously277 kWh + 112 kWh
= 389 kWh
Halogen lamps3005  hours per day45 kWh

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Type of appliancePower WattsHours/MokWh/Mo
Tumble dryer C250090 hours(3 hours per day)225 kWh
Washing machine A+++250090 hours(3 hours per day)225 kWh
Washing machine B250090 hours(3 hours per day)225 kWh
Iron240060 hours(2 hours per day)144 kWh
Vacuum cleaner160060 hours(2 hours per day)96 kWh

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Type of appliancePower WattsHours/MokWh/Mo
Computer with flat screenOn8090 hours(3  hours per day)7.2 kWh
Computer with flat screenIn sleep mode3 W30 days – continuously2.16 kWh
Low-energy light bulbs20150 hours(5  hours per day)3 kWh
Mobile phone charger530 hours(1  hour per day)0.15

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Type of appliancePower WattsHours/MokWh/Mo
Computer with cathode monitorOn100120 hour -(4  hour per day)12 kWh
Computer with cathode monitorIn sleep mode4030 days – continuously28.8 kWh
TV with cathode ray tubeOn100120 hour (4  hour per day)12 kWh
TV with cathode ray tubeIn sleep mode830 days – continuously5.76 kWh
Radio alarm430 days – continuously2.88 kWh
Type of appliancePower WattsHours/MokWh/Mo
Electric shaver107.5 hours (15 mins./day)0.045 kWh
Back-up heating appliance20007.5 days (15 mins./day)9 kWh
Hairdryer607.5 weeks (15 mins./day)0.27 kWh
Important Tips to Save Energy Usage

The best way to save electricity is to avoid unnecessary use of the electrical device, switch off if you do not need it.
You can also use CFL instead of a bulb, these CFL bulbs save 70 to 80 percent of electricity. Keep the windows open during the day and so that sunlight can come to your bedroom.