Megawatt-hours (MWh)

The megawatt-hour is 1,000 kWh, used for wholesale electricity prices and large batteries.

Convert megawatt-hours to any energy unit

1 megawatt-hour = 3,600,000,000 joules

Quick facts

Unit
Megawatt-hour (plural: megawatt-hours)
Symbol
MWh
Measures
Energy / Work / Heat
System
Electrical
Equals
3,600,000,000 joules
Definition
1,000 kWh (3.6 GJ).

1 megawatt-hour in other units

Joules3,600,000,000 J
Kilocalories860,420.6501 kcal
Kilowatt-hours1,000 kWh
British thermal units3,412,141.633 BTU
Calories860,420,650.1 cal
Kilojoules3,600,000 kJ
Calories (food)860,420.6501 Cal
Electronvolts2.2469433 × 1028 eV

What is a megawatt-hour?

The megawatt-hour is 1,000 kWh, used for wholesale electricity prices and large batteries. A wind turbine produces several MWh per hour at full output.

Where the megawatt-hour sits among energy units

The megawatt-hour is number 72 of 99 on our scale of energy units, ordered from smallest to largest.

Megawatt-hours in real life

One megawatt-hour is about the energy of a ton of TNT, or about the energy of 3.6 lightning bolts, or about the energy of 105 liters of gasoline, or about 9.5% of the energy in a US household's yearly electricity.

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Common amounts of megawatt-hours

Convert megawatt-hours to all 98 other units

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Frequently asked questions

What is a megawatt-hour?

The megawatt-hour is 1,000 kWh, used for wholesale electricity prices and large batteries.

How is the megawatt-hour defined?

1,000 kWh (3.6 GJ).

How many joules are in a megawatt-hour?

One megawatt-hour equals 3,600,000,000 joules.

How many kilocalories are in a megawatt-hour?

One megawatt-hour equals 860,420.6501 kilocalories.

How many kilowatt-hours are in a megawatt-hour?

One megawatt-hour equals 1,000 kilowatt-hours.