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.
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.
| Gigawatt-hours | Kilowatt-hours |
|---|---|
0
GWh
|
0
kWh
|
0.1
GWh
|
100000
kWh
|
0.2
GWh
|
200000
kWh
|
0.3
GWh
|
300000
kWh
|
0.4
GWh
|
400000
kWh
|
0.5
GWh
|
500000
kWh
|
0.6
GWh
|
600000
kWh
|
0.7
GWh
|
700000
kWh
|
0.8
GWh
|
800000
kWh
|
0.9
GWh
|
900000
kWh
|
1
GWh
|
1000000
kWh
|
1.1
GWh
|
1100000
kWh
|
1.2
GWh
|
1200000
kWh
|
1.3
GWh
|
1300000
kWh
|
1.4
GWh
|
1400000
kWh
|
1.5
GWh
|
1500000
kWh
|
1.6
GWh
|
1600000
kWh
|
1.7
GWh
|
1700000
kWh
|
1.8
GWh
|
1800000
kWh
|
1.9
GWh
|
1900000
kWh
|
2
GWh
|
2000000
kWh
|
2.1
GWh
|
2100000
kWh
|
2.2
GWh
|
2200000
kWh
|
2.3
GWh
|
2300000
kWh
|
2.4
GWh
|
2400000
kWh
|
2.5
GWh
|
2500000
kWh
|
2.6
GWh
|
2600000
kWh
|
2.7
GWh
|
2700000
kWh
|
2.8
GWh
|
2800000
kWh
|
2.9
GWh
|
2900000
kWh
|
3
GWh
|
3000000
kWh
|
3.1
GWh
|
3100000
kWh
|
3.2
GWh
|
3200000
kWh
|
3.3
GWh
|
3300000
kWh
|
3.4
GWh
|
3400000
kWh
|
3.5
GWh
|
3500000
kWh
|
3.6
GWh
|
3600000
kWh
|
3.7
GWh
|
3700000
kWh
|
3.8
GWh
|
3800000
kWh
|
3.9
GWh
|
3900000
kWh
|
4
GWh
|
4000000
kWh
|
4.1
GWh
|
4100000
kWh
|
4.2
GWh
|
4200000
kWh
|
4.3
GWh
|
4300000
kWh
|
4.4
GWh
|
4400000
kWh
|
4.5
GWh
|
4500000
kWh
|
4.6
GWh
|
4600000
kWh
|
4.7
GWh
|
4700000
kWh
|
4.8
GWh
|
4800000
kWh
|
4.9
GWh
|
4900000
kWh
|
5
GWh
|
5000000
kWh
|
5.1
GWh
|
5100000
kWh
|
5.2
GWh
|
5200000
kWh
|
5.3
GWh
|
5300000
kWh
|
5.4
GWh
|
5400000
kWh
|
5.5
GWh
|
5500000
kWh
|
5.6
GWh
|
5600000
kWh
|
5.7
GWh
|
5700000
kWh
|
5.8
GWh
|
5800000
kWh
|
5.9
GWh
|
5900000
kWh
|
6
GWh
|
6000000
kWh
|
6.1
GWh
|
6100000
kWh
|
6.2
GWh
|
6200000
kWh
|
6.3
GWh
|
6300000
kWh
|
6.4
GWh
|
6400000
kWh
|
6.5
GWh
|
6500000
kWh
|
6.6
GWh
|
6600000
kWh
|
6.7
GWh
|
6700000
kWh
|
6.8
GWh
|
6800000
kWh
|
6.9
GWh
|
6900000
kWh
|
7
GWh
|
7000000
kWh
|
7.1
GWh
|
7100000
kWh
|
7.2
GWh
|
7200000
kWh
|
7.3
GWh
|
7300000
kWh
|
7.4
GWh
|
7400000
kWh
|
7.5
GWh
|
7500000
kWh
|
7.6
GWh
|
7600000
kWh
|
7.7
GWh
|
7700000
kWh
|
7.8
GWh
|
7800000
kWh
|
7.9
GWh
|
7900000
kWh
|
8
GWh
|
8000000
kWh
|
8.1
GWh
|
8100000
kWh
|
8.2
GWh
|
8200000
kWh
|
8.3
GWh
|
8300000
kWh
|
8.4
GWh
|
8400000
kWh
|
8.5
GWh
|
8500000
kWh
|
8.6
GWh
|
8600000
kWh
|
8.7
GWh
|
8700000
kWh
|
8.8
GWh
|
8800000
kWh
|
8.9
GWh
|
8900000
kWh
|
9
GWh
|
9000000
kWh
|
9.1
GWh
|
9100000
kWh
|
9.2
GWh
|
9200000
kWh
|
9.3
GWh
|
9300000
kWh
|
9.4
GWh
|
9400000
kWh
|
9.5
GWh
|
9500000
kWh
|
9.6
GWh
|
9600000
kWh
|
9.7
GWh
|
9700000
kWh
|
9.8
GWh
|
9800000
kWh
|
9.9
GWh
|
9900000
kWh
|
10
GWh
|
1e+7
kWh
|
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