Technical Digest: Wind hydrogen - Hybrid experiment

Three Enercon 2 MW turbines will be the driving force behind a EUR21 million hybrid renewable energy power station being built as a research and development project by developer Enertrag, near Prenzlau in the eastern German state of Brandenburg.

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When wind speeds are high, but local energy demand is low, such as at night, some of the electricity generated by the turbines will power a 500 kW electrolysis plant that will produce hydrogen for storage. When wind speeds are low but energy demand is high, the hydrogen is mixed with biogas, produced in a nearby plant, to fuel two 340 kW cogeneration (combined heat and power) plants. Using the combined operation of the different power generation technologies, the station can produce electricity on demand. Heat from the cogeneration plants is fed into the local district heating network. The universities in Stralsund, Braunschweig and Cottbus are involved in the project, as are Total Deutschland and German hydrogen association Deutsche Wasserstoff-Verband.

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