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What is the formula to calculate the amount of electrical energy consumed in kilowatt-hour?
Wiki User
∙ 10y ago
You don't need to - the "unit" by which electricity is sold is the kWh.
kWh = unit
1 kWh = 1 unit
each unit is equal to 1000 watt-hours.
CommentThe term, 'unit', is short for 'Board of Trade Unit'. The Board of Trade used to regulate the cost of electricity in Britain.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoThe kilowatt hour (kWh) is a unit of energy, and MW is a unit of power. You cannot convert directly between the two as they measure different things.
If you have a time period you are interested in then you can determine the amount of energy for a system of given power over that time period. You could then convert that into kWh.
Power x Time = Energy
To convert to kWh:
100W x 30h = 3000 Wh = 3 kWh
Note 1: Conventionally the units would be, energy in Joules (J), power in Watts (W), time in Seconds (s)
Note 2: energy is often referred to as Work (abbreviated as W) which may be confused with the unit Watt (also W) which is a measure of Power.
CORRECTION***Power/Time = Energy
Wiki User
∙ 10y agoKilowatt hours used = 0.001 x (voltage, Volts) x (current, Amps) x (number of hours used)
Wiki User
∙ 11y agovolts multiplied by amps=watts
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