Repowering Gives New Life to Old Wind Sites

By 2020, swapping aging wind turbines with more powerful modern units will have raised annual electricity generation at refurbished sites from 1524 GWh to 8221 GWh. A 2 MW wind turbine coming off the production line with a rotor diameter of 80 metres can generate four to six times as much electricity as the 1 GWh annual yield of a 500 kW wind turbine with a 40 metre rotor built in 1995. This is the fundamental thinking behind wind repowering.

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