A megajoule, equivalent to one million joules, is a versatile unit of energy that may be more integral to your daily life than you realize. For instance, the energy stored in a liter of gasoline is approximately 34.2 megajoules, which is why this measure often underpins discussions in energy industries. Interestingly, the lightning bolt that splits the sky during a thunderstorm releases about 500 megajoules, highlighting the immense power nature can unleash in mere seconds.
The megajoule also plays a pivotal role in fields like physics and engineering, especially in calculating the energy output of various processes. For example, modern fusion experiments and some space missions use megajoules to quantify energy needs and outputs. This essential unit connects the dots between cutting-edge technology and natural phenomena, providing insights into the world’s invisible energies.
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.
Megajoules | Megawatt-hours |
---|---|
0
MJ
|
0
MWh
|
1
MJ
|
0.000277778
MWh
|
2
MJ
|
0.000555556
MWh
|
3
MJ
|
0.000833333
MWh
|
4
MJ
|
0.00111111
MWh
|
5
MJ
|
0.00138889
MWh
|
6
MJ
|
0.00166667
MWh
|
7
MJ
|
0.00194444
MWh
|
8
MJ
|
0.00222222
MWh
|
9
MJ
|
0.0025
MWh
|
10
MJ
|
0.00277778
MWh
|
11
MJ
|
0.00305556
MWh
|
12
MJ
|
0.00333333
MWh
|
13
MJ
|
0.00361111
MWh
|
14
MJ
|
0.00388889
MWh
|
15
MJ
|
0.00416667
MWh
|
16
MJ
|
0.00444444
MWh
|
17
MJ
|
0.00472222
MWh
|
18
MJ
|
0.005
MWh
|
19
MJ
|
0.00527778
MWh
|
20
MJ
|
0.00555556
MWh
|
21
MJ
|
0.00583333
MWh
|
22
MJ
|
0.00611111
MWh
|
23
MJ
|
0.00638889
MWh
|
24
MJ
|
0.00666667
MWh
|
25
MJ
|
0.00694444
MWh
|
26
MJ
|
0.00722222
MWh
|
27
MJ
|
0.0075
MWh
|
28
MJ
|
0.00777778
MWh
|
29
MJ
|
0.00805556
MWh
|
30
MJ
|
0.00833333
MWh
|
31
MJ
|
0.00861111
MWh
|
32
MJ
|
0.00888889
MWh
|
33
MJ
|
0.00916667
MWh
|
34
MJ
|
0.00944444
MWh
|
35
MJ
|
0.00972222
MWh
|
36
MJ
|
0.01
MWh
|
37
MJ
|
0.0102778
MWh
|
38
MJ
|
0.0105556
MWh
|
39
MJ
|
0.0108333
MWh
|
40
MJ
|
0.0111111
MWh
|
41
MJ
|
0.0113889
MWh
|
42
MJ
|
0.0116667
MWh
|
43
MJ
|
0.0119444
MWh
|
44
MJ
|
0.0122222
MWh
|
45
MJ
|
0.0125
MWh
|
46
MJ
|
0.0127778
MWh
|
47
MJ
|
0.0130556
MWh
|
48
MJ
|
0.0133333
MWh
|
49
MJ
|
0.0136111
MWh
|
50
MJ
|
0.0138889
MWh
|
51
MJ
|
0.0141667
MWh
|
52
MJ
|
0.0144444
MWh
|
53
MJ
|
0.0147222
MWh
|
54
MJ
|
0.015
MWh
|
55
MJ
|
0.0152778
MWh
|
56
MJ
|
0.0155556
MWh
|
57
MJ
|
0.0158333
MWh
|
58
MJ
|
0.0161111
MWh
|
59
MJ
|
0.0163889
MWh
|
60
MJ
|
0.0166667
MWh
|
61
MJ
|
0.0169444
MWh
|
62
MJ
|
0.0172222
MWh
|
63
MJ
|
0.0175
MWh
|
64
MJ
|
0.0177778
MWh
|
65
MJ
|
0.0180556
MWh
|
66
MJ
|
0.0183333
MWh
|
67
MJ
|
0.0186111
MWh
|
68
MJ
|
0.0188889
MWh
|
69
MJ
|
0.0191667
MWh
|
70
MJ
|
0.0194444
MWh
|
71
MJ
|
0.0197222
MWh
|
72
MJ
|
0.02
MWh
|
73
MJ
|
0.0202778
MWh
|
74
MJ
|
0.0205556
MWh
|
75
MJ
|
0.0208333
MWh
|
76
MJ
|
0.0211111
MWh
|
77
MJ
|
0.0213889
MWh
|
78
MJ
|
0.0216667
MWh
|
79
MJ
|
0.0219444
MWh
|
80
MJ
|
0.0222222
MWh
|
81
MJ
|
0.0225
MWh
|
82
MJ
|
0.0227778
MWh
|
83
MJ
|
0.0230556
MWh
|
84
MJ
|
0.0233333
MWh
|
85
MJ
|
0.0236111
MWh
|
86
MJ
|
0.0238889
MWh
|
87
MJ
|
0.0241667
MWh
|
88
MJ
|
0.0244444
MWh
|
89
MJ
|
0.0247222
MWh
|
90
MJ
|
0.025
MWh
|
91
MJ
|
0.0252778
MWh
|
92
MJ
|
0.0255556
MWh
|
93
MJ
|
0.0258333
MWh
|
94
MJ
|
0.0261111
MWh
|
95
MJ
|
0.0263889
MWh
|
96
MJ
|
0.0266667
MWh
|
97
MJ
|
0.0269444
MWh
|
98
MJ
|
0.0272222
MWh
|
99
MJ
|
0.0275
MWh
|
100
MJ
|
0.0277778
MWh
|
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