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The electricity cost in most of the residential and commercial sectors varies with the total amount of energy usage and the maximum power. The two terms used in electronics are power and energy, which is two different things but people uses them interchangeably.
Are kW and kWh the same?
The kW corresponds to energy demand or usage at a given moment, and the kWh is energy consumption or energy usage over a specified period of time. In general terms, the kW and kWh are the units which are used to measure energy. They are based on watts (W) that calculate the total amount of power (the amount at which energy is generated or consumed) over a specific time.
Logically, the distinction between kW and kWh is that the kWh is the measurement of energy, whereas a kW is the total power calculation. But the terms power and energy are sometimes misused interchangeably.
Energy refers to the capacity to do work while power relates to the amount of energy output or use. The major applications of kW are in the measurement power of small appliances are bulb, motor, and the kWh use is for calculating the electrical energy.
The formula for calculating the kWh is:
KWh=kW x hours
Whereas for kW is:
kW= Joule/ second x 1000