The kilowatt-hour (kWh) is a unit of energy that represents the amount of energy consumed or produced. Although commonly associated with electric bills, it has fascinating real-world applications. For example, one kWh can power a 100-watt incandescent light bulb for 10 hours or a modern energy-efficient LED bulb for around 50 hours. Interestingly, the kWh is not just for electricity—it’s also used in renewable energy systems to measure solar and wind power production efficiencies.
Beyond its practical uses, kilowatt-hours reveal intriguing insights into our energy consumption patterns. For instance, the average U.S. home consumes about 877 kWh per month, providing a benchmark for households exploring energy-saving measures. The kWh also serves as a universal language in global energy markets, standardizing costs and outputs across international borders.
A gigawatt-hour (GWh) is a unit of energy representing one billion watt-hours, or one million kilowatt-hours. To put it into perspective, a single gigawatt-hour can power approximately 750,000 homes for an hour or a modest-sized city for a few hours! This unit is commonly used in measuring the output of power stations or the amount of electricity consumed over a span.
Interestingly, the largest solar farm in the world, Noor Abu Dhabi, boasts a capacity of about 1,177 gigawatts per year, reflecting how renewable energy advancements continue to scale. As nations transition to greener power, understanding energy units like the gigawatt-hour becomes crucial in evaluating our global energy impact and future sustainability targets.
| Kilowatt-hours | Gigawatt-hours |
|---|---|
0
kWh
|
0
GWh
|
1
kWh
|
0.000001
GWh
|
2
kWh
|
0.000002
GWh
|
3
kWh
|
0.000003
GWh
|
4
kWh
|
0.000004
GWh
|
5
kWh
|
0.000005
GWh
|
6
kWh
|
0.000006
GWh
|
7
kWh
|
0.000007
GWh
|
8
kWh
|
0.000008
GWh
|
9
kWh
|
0.000009
GWh
|
10
kWh
|
0.00001
GWh
|
11
kWh
|
0.000011
GWh
|
12
kWh
|
0.000012
GWh
|
13
kWh
|
0.000013
GWh
|
14
kWh
|
0.000014
GWh
|
15
kWh
|
0.000015
GWh
|
16
kWh
|
0.000016
GWh
|
17
kWh
|
0.000017
GWh
|
18
kWh
|
0.000018
GWh
|
19
kWh
|
0.000019
GWh
|
20
kWh
|
0.00002
GWh
|
21
kWh
|
0.000021
GWh
|
22
kWh
|
0.000022
GWh
|
23
kWh
|
0.000023
GWh
|
24
kWh
|
0.000024
GWh
|
25
kWh
|
0.000025
GWh
|
26
kWh
|
0.000026
GWh
|
27
kWh
|
0.000027
GWh
|
28
kWh
|
0.000028
GWh
|
29
kWh
|
0.000029
GWh
|
30
kWh
|
0.00003
GWh
|
31
kWh
|
0.000031
GWh
|
32
kWh
|
0.000032
GWh
|
33
kWh
|
0.000033
GWh
|
34
kWh
|
0.000034
GWh
|
35
kWh
|
0.000035
GWh
|
36
kWh
|
0.000036
GWh
|
37
kWh
|
0.000037
GWh
|
38
kWh
|
0.000038
GWh
|
39
kWh
|
0.000039
GWh
|
40
kWh
|
0.00004
GWh
|
41
kWh
|
0.000041
GWh
|
42
kWh
|
0.000042
GWh
|
43
kWh
|
0.000043
GWh
|
44
kWh
|
0.000044
GWh
|
45
kWh
|
0.000045
GWh
|
46
kWh
|
0.000046
GWh
|
47
kWh
|
0.000047
GWh
|
48
kWh
|
0.000048
GWh
|
49
kWh
|
0.000049
GWh
|
50
kWh
|
0.00005
GWh
|
51
kWh
|
0.000051
GWh
|
52
kWh
|
0.000052
GWh
|
53
kWh
|
0.000053
GWh
|
54
kWh
|
0.000054
GWh
|
55
kWh
|
0.000055
GWh
|
56
kWh
|
0.000056
GWh
|
57
kWh
|
0.000057
GWh
|
58
kWh
|
0.000058
GWh
|
59
kWh
|
0.000059
GWh
|
60
kWh
|
0.00006
GWh
|
61
kWh
|
0.000061
GWh
|
62
kWh
|
0.000062
GWh
|
63
kWh
|
0.000063
GWh
|
64
kWh
|
0.000064
GWh
|
65
kWh
|
0.000065
GWh
|
66
kWh
|
0.000066
GWh
|
67
kWh
|
0.000067
GWh
|
68
kWh
|
0.000068
GWh
|
69
kWh
|
0.000069
GWh
|
70
kWh
|
0.00007
GWh
|
71
kWh
|
0.000071
GWh
|
72
kWh
|
0.000072
GWh
|
73
kWh
|
0.000073
GWh
|
74
kWh
|
0.000074
GWh
|
75
kWh
|
0.000075
GWh
|
76
kWh
|
0.000076
GWh
|
77
kWh
|
0.000077
GWh
|
78
kWh
|
0.000078
GWh
|
79
kWh
|
0.000079
GWh
|
80
kWh
|
0.00008
GWh
|
81
kWh
|
0.000081
GWh
|
82
kWh
|
0.000082
GWh
|
83
kWh
|
0.000083
GWh
|
84
kWh
|
0.000084
GWh
|
85
kWh
|
0.000085
GWh
|
86
kWh
|
0.000086
GWh
|
87
kWh
|
0.000087
GWh
|
88
kWh
|
0.000088
GWh
|
89
kWh
|
0.000089
GWh
|
90
kWh
|
0.00009
GWh
|
91
kWh
|
0.000091
GWh
|
92
kWh
|
0.000092
GWh
|
93
kWh
|
0.000093
GWh
|
94
kWh
|
0.000094
GWh
|
95
kWh
|
0.000095
GWh
|
96
kWh
|
0.000096
GWh
|
97
kWh
|
0.000097
GWh
|
98
kWh
|
0.000098
GWh
|
99
kWh
|
0.000099
GWh
|
100
kWh
|
0.0001
GWh
|
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