This huge wind turbine, being installed in Emden, Germany, by Enercon, is expected to produce around 7MW (20 million kilowatt hours a year), which is apparently enough to power 5,000 four-person households in Europe. Its rotor blades are 126 metres long and its hub height is 135 metres.

As a comparison, the four turbines at South Africa’s Darling Wind Farm will generate 1.3MW each, an annual total of 13.2 million kilowatt hours.

Via :: Metaefficient