Youhave to keep in mind: energy=power*time.
So power can be considerable, but for a short time.
Although in 20 ft waves, there can be not only considerable power, but also considerable amount of energy, since many tons of water are moving up and down constantly.
Just for comparison:
Suppose you have a AA-battery of 1.5 V and 1500 mAh=1.5 Ah
The amount of energy stored is 1.5*1.5=2.25 VAh=2.25 Wh=0.00225 kWh
If there were no limits for the max. Amperage, You could draw 100 kW of power from it!
However only for 0.00225/100=0.0000225 hour=0.08 seconds
Or 10 kW of power for 0.8 seconds, or 1 kW of power for 8 seconds or 100 W of power for 80 seconds, etc.
So power itself doesn't tell so much. It's the amount of power over a certain time, that tells you how much energy is stored in it....
|