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Physics > Process and Activity Power Ratings

The tables below show the estimated generated power (in Watts) for various devices or processes and during human activities.

Power (W) Device or process
3.6 × 1039 Standard quasar
3.6 × 1026 The sun
1.25 × 1015 World’s most powerful laser (Petawatt)
1.3 × 1013 Total estimated human consumption, global
1.2 × 1010 Space shuttle during launch
109 ~ 1010 Typical power station output
4,700,000 most powerful train (GE AC6000 CW)
783,000 most powerful truck (Terex TR100)
468,000 most powerful car (McLaren F1)
10,000 Watt's steam engine of 1778
746 1 horsepower
100 human, daily average output
10−5 Human voice

Estimated power generated by specific human activity.

Power(W) Activity
800 playing basketball
700 cycling (21 km/h)
685 climbing stairs (116 steps/min)
545 skating (15 km/h)
475 swimming (1.6 km/h)
440 playing tennis
400 cycling (15 km/h)
265 walking (5 km/h)
210 sitting with focussed attention
125 standing at rest
120 sitting at rest
83 sleeping