The megawatt-hour (MWh) is a unit of energy that measures electricity production, consumption, or energy flow over time. It is commonly used to bill large-scale electricity consumers, such as factories or entire cities. To put it into perspective, one megawatt-hour can power about 330 homes for an hour or a single home for 330 hours! In the realm of renewable energy, just one megawatt-hour of wind energy can offset over 1,100 pounds of carbon dioxide emissions—a significant environmental benefit.
Moreover, the world’s energy needs are so vast that in 2022, global electricity consumption soared to over 26,000 terawatt-hours (TWh), where one terawatt-hour equates to one million megawatt-hours. This highlights how crucial units like the MWh are in understanding and managing our energy use and impact.
The watt-minute is a lesser-known unit of energy, yet it plays a significant role in understanding everyday energy consumption. It is equivalent to 60 joules and is simply the amount of energy produced or consumed by a power of one watt over one minute. Although not commonly used in everyday measurements, watt-minutes can be instrumental in more precise energy calculations, such as for electrical appliances or industrial equipment, providing insights between larger units like kilowatt-hours and smaller units like joules.
Intriguingly, it takes roughly 15 watt-minutes to charge a modern smartphone for one minute of talk time. This highlights how even small units can offer a clearer perspective on our energy usage, encouraging us to be more mindful of our energy habits!
| Megawatt-hours | Watt-minutes |
|---|---|
0
MWh
|
0
Wm
|
0.1
MWh
|
6000000
Wm
|
0.2
MWh
|
1.2e+7
Wm
|
0.3
MWh
|
1.8e+7
Wm
|
0.4
MWh
|
2.4e+7
Wm
|
0.5
MWh
|
3e+7
Wm
|
0.6
MWh
|
3.6e+7
Wm
|
0.7
MWh
|
4.2e+7
Wm
|
0.8
MWh
|
4.8e+7
Wm
|
0.9
MWh
|
5.4e+7
Wm
|
1
MWh
|
6e+7
Wm
|
1.1
MWh
|
6.6e+7
Wm
|
1.2
MWh
|
7.2e+7
Wm
|
1.3
MWh
|
7.8e+7
Wm
|
1.4
MWh
|
8.4e+7
Wm
|
1.5
MWh
|
9e+7
Wm
|
1.6
MWh
|
9.6e+7
Wm
|
1.7
MWh
|
1.02e+8
Wm
|
1.8
MWh
|
1.08e+8
Wm
|
1.9
MWh
|
1.14e+8
Wm
|
2
MWh
|
1.2e+8
Wm
|
2.1
MWh
|
1.26e+8
Wm
|
2.2
MWh
|
1.32e+8
Wm
|
2.3
MWh
|
1.38e+8
Wm
|
2.4
MWh
|
1.44e+8
Wm
|
2.5
MWh
|
1.5e+8
Wm
|
2.6
MWh
|
1.56e+8
Wm
|
2.7
MWh
|
1.62e+8
Wm
|
2.8
MWh
|
1.68e+8
Wm
|
2.9
MWh
|
1.74e+8
Wm
|
3
MWh
|
1.8e+8
Wm
|
3.1
MWh
|
1.86e+8
Wm
|
3.2
MWh
|
1.92e+8
Wm
|
3.3
MWh
|
1.98e+8
Wm
|
3.4
MWh
|
2.04e+8
Wm
|
3.5
MWh
|
2.1e+8
Wm
|
3.6
MWh
|
2.16e+8
Wm
|
3.7
MWh
|
2.22e+8
Wm
|
3.8
MWh
|
2.28e+8
Wm
|
3.9
MWh
|
2.34e+8
Wm
|
4
MWh
|
2.4e+8
Wm
|
4.1
MWh
|
2.46e+8
Wm
|
4.2
MWh
|
2.52e+8
Wm
|
4.3
MWh
|
2.58e+8
Wm
|
4.4
MWh
|
2.64e+8
Wm
|
4.5
MWh
|
2.7e+8
Wm
|
4.6
MWh
|
2.76e+8
Wm
|
4.7
MWh
|
2.82e+8
Wm
|
4.8
MWh
|
2.88e+8
Wm
|
4.9
MWh
|
2.94e+8
Wm
|
5
MWh
|
3e+8
Wm
|
5.1
MWh
|
3.06e+8
Wm
|
5.2
MWh
|
3.12e+8
Wm
|
5.3
MWh
|
3.18e+8
Wm
|
5.4
MWh
|
3.24e+8
Wm
|
5.5
MWh
|
3.3e+8
Wm
|
5.6
MWh
|
3.36e+8
Wm
|
5.7
MWh
|
3.42e+8
Wm
|
5.8
MWh
|
3.48e+8
Wm
|
5.9
MWh
|
3.54e+8
Wm
|
6
MWh
|
3.6e+8
Wm
|
6.1
MWh
|
3.66e+8
Wm
|
6.2
MWh
|
3.72e+8
Wm
|
6.3
MWh
|
3.78e+8
Wm
|
6.4
MWh
|
3.84e+8
Wm
|
6.5
MWh
|
3.9e+8
Wm
|
6.6
MWh
|
3.96e+8
Wm
|
6.7
MWh
|
4.02e+8
Wm
|
6.8
MWh
|
4.08e+8
Wm
|
6.9
MWh
|
4.14e+8
Wm
|
7
MWh
|
4.2e+8
Wm
|
7.1
MWh
|
4.26e+8
Wm
|
7.2
MWh
|
4.32e+8
Wm
|
7.3
MWh
|
4.38e+8
Wm
|
7.4
MWh
|
4.44e+8
Wm
|
7.5
MWh
|
4.5e+8
Wm
|
7.6
MWh
|
4.56e+8
Wm
|
7.7
MWh
|
4.62e+8
Wm
|
7.8
MWh
|
4.68e+8
Wm
|
7.9
MWh
|
4.74e+8
Wm
|
8
MWh
|
4.8e+8
Wm
|
8.1
MWh
|
4.86e+8
Wm
|
8.2
MWh
|
4.92e+8
Wm
|
8.3
MWh
|
4.98e+8
Wm
|
8.4
MWh
|
5.04e+8
Wm
|
8.5
MWh
|
5.1e+8
Wm
|
8.6
MWh
|
5.16e+8
Wm
|
8.7
MWh
|
5.22e+8
Wm
|
8.8
MWh
|
5.28e+8
Wm
|
8.9
MWh
|
5.34e+8
Wm
|
9
MWh
|
5.4e+8
Wm
|
9.1
MWh
|
5.46e+8
Wm
|
9.2
MWh
|
5.52e+8
Wm
|
9.3
MWh
|
5.58e+8
Wm
|
9.4
MWh
|
5.64e+8
Wm
|
9.5
MWh
|
5.7e+8
Wm
|
9.6
MWh
|
5.76e+8
Wm
|
9.7
MWh
|
5.82e+8
Wm
|
9.8
MWh
|
5.88e+8
Wm
|
9.9
MWh
|
5.94e+8
Wm
|
10
MWh
|
6e+8
Wm
|
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