| gigawatt | 1 GW | 2 GW | 3 GW | 4 GW | 5 GW | 6 GW | 7 GW | 8 GW | 9 GW | 10 GW | 11 GW | 12 GW | 13 GW | 14 GW | 15 GW | 16 GW | 17 GW | 18 GW | 19 GW | 20 GW | 21 GW | 22 GW | 23 GW | 24 GW | 25 GW | 26 GW | 27 GW | 28 GW | 29 GW | 30 GW | 31 GW | 32 GW | 33 GW | 34 GW | 35 GW | 36 GW | 37 GW | 38 GW | 39 GW | 40 GW | 41 GW | 42 GW | 43 GW | 44 GW | 45 GW | 46 GW | 47 GW | 48 GW | 49 GW | 50 GW | 51 GW | 52 GW | 53 GW | 54 GW | 55 GW | 56 GW | 57 GW | 58 GW | 59 GW | 60 GW | 61 GW | 62 GW | 63 GW | 64 GW | 65 GW | 66 GW | 67 GW | 68 GW | 69 GW | 70 GW | 71 GW | 72 GW | 73 GW | 74 GW | 75 GW | 76 GW | 77 GW | 78 GW | 79 GW | 80 GW | 81 GW | 82 GW | 83 GW | 84 GW | 85 GW | 86 GW | 87 GW | 88 GW | 89 GW | 90 GW | 91 GW | 92 GW | 93 GW | 94 GW | 95 GW | 96 GW | 97 GW | 98 GW | 99 GW | 100 GW |
| terawatt | 0.001 TW | 0.002 TW | 0.003 TW | 0.004 TW | 0.005 TW | 0.006 TW | 0.007 TW | 0.008 TW | 0.009 TW | 0.01 TW | 0.011 TW | 0.012 TW | 0.013 TW | 0.014 TW | 0.015 TW | 0.016 TW | 0.017 TW | 0.018 TW | 0.019 TW | 0.02 TW | 0.021 TW | 0.022 TW | 0.023 TW | 0.024 TW | 0.025 TW | 0.026 TW | 0.027 TW | 0.028 TW | 0.029 TW | 0.03 TW | 0.031 TW | 0.032 TW | 0.033 TW | 0.034 TW | 0.035 TW | 0.036 TW | 0.037 TW | 0.038 TW | 0.039 TW | 0.04 TW | 0.041 TW | 0.042 TW | 0.043 TW | 0.044 TW | 0.045 TW | 0.046 TW | 0.047 TW | 0.048 TW | 0.049 TW | 0.05 TW | 0.051 TW | 0.052 TW | 0.053 TW | 0.054 TW | 0.055 TW | 0.056 TW | 0.057 TW | 0.058 TW | 0.059 TW | 0.06 TW | 0.061 TW | 0.062 TW | 0.063 TW | 0.064 TW | 0.065 TW | 0.066 TW | 0.067 TW | 0.068 TW | 0.069 TW | 0.07 TW | 0.071 TW | 0.072 TW | 0.073 TW | 0.074 TW | 0.075 TW | 0.076 TW | 0.077 TW | 0.078 TW | 0.079 TW | 0.08 TW | 0.081 TW | 0.082 TW | 0.083 TW | 0.084 TW | 0.085 TW | 0.086 TW | 0.087 TW | 0.088 TW | 0.089 TW | 0.09 TW | 0.091 TW | 0.092 TW | 0.093 TW | 0.094 TW | 0.095 TW | 0.096 TW | 0.097 TW | 0.098 TW | 0.099 TW | 0.1 TW |
The gigawatt (GW) is equal to one billion (109) watts or 1 gigawatt = 1000 megawatts. This unit is often used for large power plants or power grids. For example, by the end of 2010 power shortages in China's Shanxi province were expected to increase to 5–6 GW and the installed capacity of wind power in Germany was 25.8 GW. The largest unit (out of four) of the Belgian Doel Nuclear Power Station has a peak output of 1.04 GW. HVDC converters have been built with power ratings of up to 2 GW.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| gigawatt | GW | = 109 W | = 109 W | Metric system SI |
| gigawatts | terawatts | gigawatts | terawatts |
|---|---|---|---|
| 1 | = 0.001 | 6 | = 0.006 |
| 2 | = 0.002 | 7 | = 0.007 |
| 3 | = 0.003 | 8 | = 0.008 |
| 4 | = 0.004 | 9 | = 0.009 |
| 5 | = 0.005 | 10 | = 0.01 |
The terawatt (TW) is equal to one trillion (1012) watts. The total power used by humans worldwide is commonly measured in terawatts (see primary energy). The most powerful lasers from the mid-1960s to the mid-1990s produced power in terawatts, but only for nanosecond time frames. The average lightning strike peaks at 1 terawatt, but these strikes only last for 30 microseconds.
| Name of unit | Symbol | Definition | Relation to SI units | Unit System |
|---|---|---|---|---|
| terawatt | TW | = 1012 W | = 1012 W | Metric system SI |
| terawatts | gigawatts | terawatts | gigawatts |
|---|---|---|---|
| 1 | = 1000 | 6 | = 6000 |
| 2 | = 2000 | 7 | = 7000 |
| 3 | = 3000 | 8 | = 8000 |
| 4 | = 4000 | 9 | = 9000 |
| 5 | = 5000 | 10 | = 10000 |
| gigawatts | terawatts |
|---|---|
| 1 | = 0.001 |
| 1 000 | = 1 |
| Symbol | Definition |
|---|---|
| ≡ | exactly equal |
| ≈ | approximately equal to |
| = | equal to |
| digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |