The turbines were constructed by the Ecotricity green energy company. Planning consent was also given for a third 65 m high turbine (Turbine 3) in Havering, with a viewing platform which was not constructed. The planned operating date for the third wind turbine was by the first quarter of 2009, and it was eventually installed in 2011.
The turbines are located 10 miles (16 km) east of the City of London at OS grid reference TQ492824 and TQ502818. They are 85 m high to the hub, have a rotor diameter of 70 m and a combined capacity of 5.9 MW. The total height to the top of the rotors is 120 m.