Electric Energy Formula
E = P × t

E is the energy transferred in kilowatthours, kWh

P is the power in kilowatts, kW

T is the time in hours, h.
Note that power is measured in kilowatts here instead of the more usual watts. To convert from W to kW you must divide by 1,000.
For example, 1,000 W = 1,000 ÷ 1,000 = 1 kW.
Also note that time is measured in hours here, instead of the more usual seconds. To convert from seconds to hours you must divide by 3,600.
For example, 7,200 s = 7,200 ÷ 3,600 = 2 h.

