功率是完成工作或能量转移的速度。它以瓦（w）为单位进行测量。
1 GW = 947,813.394 BTU/s
1 BTU/s = 1.0551e-6 GW
例子:
将15 gigawatt转换为BTU每秒：
15 GW = 14,217,200.917 BTU/s
| gigawatt | BTU每秒 |
|---|---|
| 0.01 GW | 9,478.134 BTU/s |
| 0.1 GW | 94,781.339 BTU/s |
| 1 GW | 947,813.394 BTU/s |
| 2 GW | 1,895,626.789 BTU/s |
| 3 GW | 2,843,440.183 BTU/s |
| 5 GW | 4,739,066.972 BTU/s |
| 10 GW | 9,478,133.945 BTU/s |
| 20 GW | 18,956,267.89 BTU/s |
| 30 GW | 28,434,401.835 BTU/s |
| 40 GW | 37,912,535.78 BTU/s |
| 50 GW | 47,390,669.725 BTU/s |
| 60 GW | 56,868,803.67 BTU/s |
| 70 GW | 66,346,937.615 BTU/s |
| 80 GW | 75,825,071.56 BTU/s |
| 90 GW | 85,303,205.505 BTU/s |
| 100 GW | 94,781,339.45 BTU/s |
| 250 GW | 236,953,348.625 BTU/s |
| 500 GW | 473,906,697.249 BTU/s |
| 750 GW | 710,860,045.874 BTU/s |
| 1000 GW | 947,813,394.499 BTU/s |
| 10000 GW | 9,478,133,944.989 BTU/s |
| 100000 GW | 94,781,339,449.889 BTU/s |
规则