La energía es la capacidad de realizar el trabajo.Existe en varias formas, como cinética, potencial, térmica, etc. Se mide en Joules (J).
1 quad = 293.056 GWh 
1 GWh = 0.003 quad 
Ejemplo: 
Convertir 15 Patio a Hora de gigavatios:
15 quad = 4,395.833 GWh 
| Patio | Hora de gigavatios | 
|---|---|
| 0.01 quad | 2.931 GWh | 
| 0.1 quad | 29.306 GWh | 
| 1 quad | 293.056 GWh | 
| 2 quad | 586.111 GWh | 
| 3 quad | 879.167 GWh | 
| 5 quad | 1,465.278 GWh | 
| 10 quad | 2,930.556 GWh | 
| 20 quad | 5,861.111 GWh | 
| 30 quad | 8,791.667 GWh | 
| 40 quad | 11,722.222 GWh | 
| 50 quad | 14,652.778 GWh | 
| 60 quad | 17,583.333 GWh | 
| 70 quad | 20,513.889 GWh | 
| 80 quad | 23,444.444 GWh | 
| 90 quad | 26,375 GWh | 
| 100 quad | 29,305.556 GWh | 
| 250 quad | 73,263.889 GWh | 
| 500 quad | 146,527.778 GWh | 
| 750 quad | 219,791.667 GWh | 
| 1000 quad | 293,055.556 GWh | 
| 10000 quad | 2,930,555.556 GWh | 
| 100000 quad | 29,305,555.556 GWh |