The electrical power consumption depends on the following factors:
- Number of electrical devices used.
- power of electrical devices is kilo watt.
- time of consumption in hour.
The first step in calculating your energy consumption is to figure out how many watts each device uses per day. Just multiply your appliance's wattage by the number of hours you use it in a day. This will give you the number of watt-hours consumed each day.In electrical engineering, power consumption refers to the electrical energy per unit time, supplied to operate something, such as a home appliance. Power consumption is usually measured in units of watts (W) or kilowatts (kW). The energy used by equipment is always more than the energy really needed.
The power consumption of small devices is usually measured in Watts, and the power consumption of larger devices is measured in kilowatts (kW), or 1,000 Watts. Electricity generation capacity is often measured in multiples of kilowatts, such as megawatts (MW) and gigawatts (GW).
The average price people in the U.S. pay for electricity is about 12 cents per kilowatt-hour. (Context: A typical U.S. household uses about 908 kWh a month of electricity.) But there's huge variation from state to state. Here's a map of residential electricity prices, according to the Energy Information Administration.