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!
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.
| Watt-minutes | Gigawatt-hours |
|---|---|
0
Wm
|
0
GWh
|
10
Wm
|
1.66667e-10
GWh
|
20
Wm
|
3.33333e-10
GWh
|
30
Wm
|
5e-10
GWh
|
40
Wm
|
6.66667e-10
GWh
|
50
Wm
|
8.33333e-10
GWh
|
60
Wm
|
1e-9
GWh
|
70
Wm
|
1.16667e-9
GWh
|
80
Wm
|
1.33333e-9
GWh
|
90
Wm
|
1.5e-9
GWh
|
100
Wm
|
1.66667e-9
GWh
|
110
Wm
|
1.83333e-9
GWh
|
120
Wm
|
2e-9
GWh
|
130
Wm
|
2.16667e-9
GWh
|
140
Wm
|
2.33333e-9
GWh
|
150
Wm
|
2.5e-9
GWh
|
160
Wm
|
2.66667e-9
GWh
|
170
Wm
|
2.83333e-9
GWh
|
180
Wm
|
3e-9
GWh
|
190
Wm
|
3.16667e-9
GWh
|
200
Wm
|
3.33333e-9
GWh
|
210
Wm
|
3.5e-9
GWh
|
220
Wm
|
3.66667e-9
GWh
|
230
Wm
|
3.83333e-9
GWh
|
240
Wm
|
4e-9
GWh
|
250
Wm
|
4.16667e-9
GWh
|
260
Wm
|
4.33333e-9
GWh
|
270
Wm
|
4.5e-9
GWh
|
280
Wm
|
4.66667e-9
GWh
|
290
Wm
|
4.83333e-9
GWh
|
300
Wm
|
5e-9
GWh
|
310
Wm
|
5.16667e-9
GWh
|
320
Wm
|
5.33333e-9
GWh
|
330
Wm
|
5.5e-9
GWh
|
340
Wm
|
5.66667e-9
GWh
|
350
Wm
|
5.83333e-9
GWh
|
360
Wm
|
6e-9
GWh
|
370
Wm
|
6.16667e-9
GWh
|
380
Wm
|
6.33333e-9
GWh
|
390
Wm
|
6.5e-9
GWh
|
400
Wm
|
6.66667e-9
GWh
|
410
Wm
|
6.83333e-9
GWh
|
420
Wm
|
7e-9
GWh
|
430
Wm
|
7.16667e-9
GWh
|
440
Wm
|
7.33333e-9
GWh
|
450
Wm
|
7.5e-9
GWh
|
460
Wm
|
7.66667e-9
GWh
|
470
Wm
|
7.83333e-9
GWh
|
480
Wm
|
8e-9
GWh
|
490
Wm
|
8.16667e-9
GWh
|
500
Wm
|
8.33333e-9
GWh
|
510
Wm
|
8.5e-9
GWh
|
520
Wm
|
8.66667e-9
GWh
|
530
Wm
|
8.83333e-9
GWh
|
540
Wm
|
9e-9
GWh
|
550
Wm
|
9.16667e-9
GWh
|
560
Wm
|
9.33333e-9
GWh
|
570
Wm
|
9.5e-9
GWh
|
580
Wm
|
9.66667e-9
GWh
|
590
Wm
|
9.83333e-9
GWh
|
600
Wm
|
1e-8
GWh
|
610
Wm
|
1.01667e-8
GWh
|
620
Wm
|
1.03333e-8
GWh
|
630
Wm
|
1.05e-8
GWh
|
640
Wm
|
1.06667e-8
GWh
|
650
Wm
|
1.08333e-8
GWh
|
660
Wm
|
1.1e-8
GWh
|
670
Wm
|
1.11667e-8
GWh
|
680
Wm
|
1.13333e-8
GWh
|
690
Wm
|
1.15e-8
GWh
|
700
Wm
|
1.16667e-8
GWh
|
710
Wm
|
1.18333e-8
GWh
|
720
Wm
|
1.2e-8
GWh
|
730
Wm
|
1.21667e-8
GWh
|
740
Wm
|
1.23333e-8
GWh
|
750
Wm
|
1.25e-8
GWh
|
760
Wm
|
1.26667e-8
GWh
|
770
Wm
|
1.28333e-8
GWh
|
780
Wm
|
1.3e-8
GWh
|
790
Wm
|
1.31667e-8
GWh
|
800
Wm
|
1.33333e-8
GWh
|
810
Wm
|
1.35e-8
GWh
|
820
Wm
|
1.36667e-8
GWh
|
830
Wm
|
1.38333e-8
GWh
|
840
Wm
|
1.4e-8
GWh
|
850
Wm
|
1.41667e-8
GWh
|
860
Wm
|
1.43333e-8
GWh
|
870
Wm
|
1.45e-8
GWh
|
880
Wm
|
1.46667e-8
GWh
|
890
Wm
|
1.48333e-8
GWh
|
900
Wm
|
1.5e-8
GWh
|
910
Wm
|
1.51667e-8
GWh
|
920
Wm
|
1.53333e-8
GWh
|
930
Wm
|
1.55e-8
GWh
|
940
Wm
|
1.56667e-8
GWh
|
950
Wm
|
1.58333e-8
GWh
|
960
Wm
|
1.6e-8
GWh
|
970
Wm
|
1.61667e-8
GWh
|
980
Wm
|
1.63333e-8
GWh
|
990
Wm
|
1.65e-8
GWh
|
1000
Wm
|
1.66667e-8
GWh
|
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