Suck the kinetic energy? What on earth does that mean? How?,(reply>), If turbines didn't lose kinetic energy when they transfer energy to the grid, you'd have a perpetual motion machine.,(reply>), A turbine "generates" electricity by rotating magnets inside of a copper coil. Electric current happens when you do this because magnetism is weird, but the basic thing you need to know is that it can't happen without the coil exerting some kind of force back on the magnets, even though they're not touching. In other words, the more current is drawn from the coils, the slower the magnet gets.