Megawatt-hours conversion

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  • MWh

Unit of:

  • Energy and power

Worldwide use:

  • Widely used in electricity generation and distribution eg for billing business customers


A megawatt hour is equivalent to a power of 1,000,000 Watts being applied for an hour


The kilowatt hour was originally known in the UK as the Board of Trade unit. This term derives from the name of the board that regulated the electricity industry in the UK until 1942

Common references:

  • A 100W light bulb left on continually for a year (in a non-leap-year) generates .876MW

Usage context:

Megawatt hours are commonly used for measuring electrical power - particularly in electrical generation and transmission and commercial electricitysupply.

Component units:


  • There are 1,000 Megawatt hours in a Gigawatt hour, 1,000,000 in a Terawatt hour, etc.