Complex sentence: The REpower 5M 5-megawatt turbine is currently one of the largest wind turbine in the world with a rated output of 5 megawatts and a rotor diameter of 126.5 meters.
Split into simpler sentences: The REpower 5M 5-megawatt turbine is currently one of the largest wind turbine in the world. It has a rated output of 5 megawatts and a rotor diameter of 126.5 meters.