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 calorie, commonly associated with food energy, originally measured heat in physics. One calorie is the amount of heat needed to raise the temperature of 1 gram of water by 1 degree Celsius. Despite what food packaging might suggest, when we count calories, we are typically referring to kilocalories, which equals 1,000 of these small calories. This means that when you see a snack label stating it’s 100 calories, it’s actually 100 kilocalories, or 100,000 calories in scientific terms!
Interestingly, the calorie became a popular unit due to its early use in nutrition studies and its role in determining food’s energy content. This is crucial, as it helps in planning and maintaining balanced diets and understanding energy expenditure for health and fitness.
| Gigawatt-hours | Calories |
|---|---|
0
GWh
|
0
cal
|
0.1
GWh
|
8.60421e+10
cal
|
0.2
GWh
|
1.72084e+11
cal
|
0.3
GWh
|
2.58126e+11
cal
|
0.4
GWh
|
3.44168e+11
cal
|
0.5
GWh
|
4.3021e+11
cal
|
0.6
GWh
|
5.16252e+11
cal
|
0.7
GWh
|
6.02294e+11
cal
|
0.8
GWh
|
6.88337e+11
cal
|
0.9
GWh
|
7.74379e+11
cal
|
1
GWh
|
8.60421e+11
cal
|
1.1
GWh
|
9.46463e+11
cal
|
1.2
GWh
|
1.0325e+12
cal
|
1.3
GWh
|
1.11855e+12
cal
|
1.4
GWh
|
1.20459e+12
cal
|
1.5
GWh
|
1.29063e+12
cal
|
1.6
GWh
|
1.37667e+12
cal
|
1.7
GWh
|
1.46272e+12
cal
|
1.8
GWh
|
1.54876e+12
cal
|
1.9
GWh
|
1.6348e+12
cal
|
2
GWh
|
1.72084e+12
cal
|
2.1
GWh
|
1.80688e+12
cal
|
2.2
GWh
|
1.89293e+12
cal
|
2.3
GWh
|
1.97897e+12
cal
|
2.4
GWh
|
2.06501e+12
cal
|
2.5
GWh
|
2.15105e+12
cal
|
2.6
GWh
|
2.23709e+12
cal
|
2.7
GWh
|
2.32314e+12
cal
|
2.8
GWh
|
2.40918e+12
cal
|
2.9
GWh
|
2.49522e+12
cal
|
3
GWh
|
2.58126e+12
cal
|
3.1
GWh
|
2.6673e+12
cal
|
3.2
GWh
|
2.75335e+12
cal
|
3.3
GWh
|
2.83939e+12
cal
|
3.4
GWh
|
2.92543e+12
cal
|
3.5
GWh
|
3.01147e+12
cal
|
3.6
GWh
|
3.09751e+12
cal
|
3.7
GWh
|
3.18356e+12
cal
|
3.8
GWh
|
3.2696e+12
cal
|
3.9
GWh
|
3.35564e+12
cal
|
4
GWh
|
3.44168e+12
cal
|
4.1
GWh
|
3.52772e+12
cal
|
4.2
GWh
|
3.61377e+12
cal
|
4.3
GWh
|
3.69981e+12
cal
|
4.4
GWh
|
3.78585e+12
cal
|
4.5
GWh
|
3.87189e+12
cal
|
4.6
GWh
|
3.95793e+12
cal
|
4.7
GWh
|
4.04398e+12
cal
|
4.8
GWh
|
4.13002e+12
cal
|
4.9
GWh
|
4.21606e+12
cal
|
5
GWh
|
4.3021e+12
cal
|
5.1
GWh
|
4.38815e+12
cal
|
5.2
GWh
|
4.47419e+12
cal
|
5.3
GWh
|
4.56023e+12
cal
|
5.4
GWh
|
4.64627e+12
cal
|
5.5
GWh
|
4.73231e+12
cal
|
5.6
GWh
|
4.81836e+12
cal
|
5.7
GWh
|
4.9044e+12
cal
|
5.8
GWh
|
4.99044e+12
cal
|
5.9
GWh
|
5.07648e+12
cal
|
6
GWh
|
5.16252e+12
cal
|
6.1
GWh
|
5.24857e+12
cal
|
6.2
GWh
|
5.33461e+12
cal
|
6.3
GWh
|
5.42065e+12
cal
|
6.4
GWh
|
5.50669e+12
cal
|
6.5
GWh
|
5.59273e+12
cal
|
6.6
GWh
|
5.67878e+12
cal
|
6.7
GWh
|
5.76482e+12
cal
|
6.8
GWh
|
5.85086e+12
cal
|
6.9
GWh
|
5.9369e+12
cal
|
7
GWh
|
6.02294e+12
cal
|
7.1
GWh
|
6.10899e+12
cal
|
7.2
GWh
|
6.19503e+12
cal
|
7.3
GWh
|
6.28107e+12
cal
|
7.4
GWh
|
6.36711e+12
cal
|
7.5
GWh
|
6.45315e+12
cal
|
7.6
GWh
|
6.5392e+12
cal
|
7.7
GWh
|
6.62524e+12
cal
|
7.8
GWh
|
6.71128e+12
cal
|
7.9
GWh
|
6.79732e+12
cal
|
8
GWh
|
6.88337e+12
cal
|
8.1
GWh
|
6.96941e+12
cal
|
8.2
GWh
|
7.05545e+12
cal
|
8.3
GWh
|
7.14149e+12
cal
|
8.4
GWh
|
7.22753e+12
cal
|
8.5
GWh
|
7.31358e+12
cal
|
8.6
GWh
|
7.39962e+12
cal
|
8.7
GWh
|
7.48566e+12
cal
|
8.8
GWh
|
7.5717e+12
cal
|
8.9
GWh
|
7.65774e+12
cal
|
9
GWh
|
7.74379e+12
cal
|
9.1
GWh
|
7.82983e+12
cal
|
9.2
GWh
|
7.91587e+12
cal
|
9.3
GWh
|
8.00191e+12
cal
|
9.4
GWh
|
8.08795e+12
cal
|
9.5
GWh
|
8.174e+12
cal
|
9.6
GWh
|
8.26004e+12
cal
|
9.7
GWh
|
8.34608e+12
cal
|
9.8
GWh
|
8.43212e+12
cal
|
9.9
GWh
|
8.51816e+12
cal
|
10
GWh
|
8.60421e+12
cal
|
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