kilowatt-hour vs kilowatts per hour

Both "kilowatt-hour" and "kilowatts per hour" are correct, but they are used in different contexts. "Kilowatt-hour" is a unit of energy measurement, representing the amount of energy used over time, while "kilowatts per hour" is a rate of power consumption, indicating the rate at which energy is being used.

Last updated: March 21, 2024

kilowatt-hour

This phrase is correct and commonly used in English as a unit of energy measurement.

Use "kilowatt-hour" when referring to the amount of energy consumed or produced over a period of time. It is commonly used in electricity bills and discussions about energy consumption.

Examples:

This appliance consumes 2 kilowatt-hours of energy per day.
The solar panels generated 500 kilowatt-hours of electricity last month.
The average household uses around 30 kilowatt-hours of electricity per day.

Alternatives:

megawatt-hour
gigawatt-hour
terawatt-hour
watt-hour
joule

kilowatts per hour

This phrase is correct but less commonly used in English. It refers to the rate of power consumption, indicating how many kilowatts of power are used in an hour.

Use "kilowatts per hour" when discussing the rate at which power is consumed or produced over time. It is a measure of power, not energy.

Examples:

The generator produces electricity at a rate of 5 kilowatts per hour.
The motor consumes 2 kilowatts per hour during operation.

Alternatives:

watts per hour
megawatts per hour
gigawatts per hour
terawatts per hour
joules per hour

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kilowatt-hour vs kilowatts per hour

kilowatt-hour

kilowatts per hour

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