The offshore wind farm RIFFGAT GmbH & Co. KG is a joint company of EWE (99.58%) and ENOVA (0.42%). It was founded to build and operate the first commercial offshore wind farm in the German North Sea, RIFFGAT. In just 14 months of construction, the company built 30 wind power plants from Siemens. With a total installed output of 113.4 megawatts, the offshore wind farm supplies climate friendly energy for 120,000 households.
EWE has built the first commercial wind farm in the German North Sea in summer 2013 with Riffgat. The modern wind farm has a total capacity of 108 megawatts of power and can supply around 120,000 households with environmentally friendly electricity. In just 14 months of construction, the 30 wind turbines of the 3.6 megawatt class have been installed 15 kilometers off the north seas of Borkum. The rotor diameter of the units is 120 meters, while the hub height is 90 meters, which corresponds to the height of the Bremen dome. Overall, the plants are 150 meters high from the water surface to the top rotor blade tip. They are founded on 70 meter long steel foundations (monopiles), 40 meters deep in the sea bottom. The water depth in the wind farm is between 18 and 23 meters. In addition to the wind power plants, Riffgat also consists of a substation which transports the generated electricity to a better transportable voltage level.
Riffgat is operated by EWE Offshore Service & Solutions GmbH (EWE OSS), the offshore subsidiary of EWE.