# Energy Consumption Formula

Energy consumption is the use of power or energy of a system by making use of supply. The consumption is done in Giga Joule per year, kilograms of oil equivalent per year (kg/a) and in Watts.

The energy consumption formula is articulated as,

$E=P\times t/1000$

Where,
E is energy in kilowatt-hours(kWh),
P is power in Watts,
t is hours

Energy  Consumption Solved Problems

Here are some cracked examples based on Energy Consumption:

Problem 1: Compute the energy consumption in a system that consumes 190 Watts of power and works for 3 hrs a day.

Given: Power P = 190 W, total number of hours = 3 hrs

$E=P\times t/1000$

E =(190*3*60*60)/1000

E =2052 kWh

Therefore, the energy consumption is 2052 kWh

Problem 2: A toy car consumes energy of 500 Watts of power if it works for 2 hrs a day using it. Calculate the energy consumption a day.

Given: Power P = 500 W, total number of hours= 2 hrs

$E=P\times t/1000$

E = (500*2*60*60)/1000

E =3600 kWh