HAMBURG, Germany — Siemens Energys B75, the world largest rotor blade, is on the ground and ready to be assembled on the hub.

Siemens Energy is field testing its new 154-metre rotor for the 6-megawatt (MW) offshore wind turbine in Østerild, Denmark.

The SWT-6.0-154 turbine is equipped with the worlds longest rotor blades – each blade is 75 metres in length.

With a rotor diameter of 154 metres, each SWT-6.0-154 turbine can produce 25 million kilowatt hours of electricity from offshore locations, enough to supply 6,000 households.

Siemens installed the first prototype of the turbine using a 120-metre rotor in May 2011 has been operating successfully for more than a year.

Siemens energy, based in Hamburg, Germany, is a global supplier of power generation systems.