"Rotating thousends of times a second"? I don't believe you.,(reply>), @Acme Fixer There are some nuclear plants using 4 pole generators because the lower temperatures use wet steam which requires very large volume flow rates which could not be accommodated at 3000rpm (the blades would break at the large diameters required),(reply>), @Acme Fixer Steam turbines in power plants run at 3000/3600 RPM due to the fact that the torque would have to double for the same power output at half RPM. The flow area of the turbines would also double. This would make the diameter a lot larger and blade stresses higher. Consequently they run as fast as possible with 2 pole generation. Wind turbines turn slowly so you want as many poles as possible.,(reply>), @finbat <br>They don't turn thousands of times a minute, either.  Most turbines turn well below 1000 RPM, because they have 8 or more "poles".  Some hydroelectric turbines turn at 250 RPM.,(reply>), @Matthew Santoro not per second my dude,(reply>), Collectively?