In 2012, ten old wind turbines were replaced by five new and more powerful ones on the Holtgaste Wind Farm. With the modern and more efficient Enercon E-101 systems, cutting the number of systems in half can almost quadruple the energy yield.
Even with single units we were able to achieve an increase in efficiency: In 2004, we conducted the first repowering action in the district of Leer. After the replacement of a 400 kilowatt turbine for a two megawatt plant, the output increased by a factor of seven.
In Memgaste we were able to achieve a six-fold increase in energy yield by repowering a wind turbine built in 1992. Countless more wind turbines can be made far more efficient through our repowering. The potential is huge!
Repowering as a service provider
The Heerenweg Wind Farm has a special place among the ENOVA repowering projects: Repowering is performed here by the land owners (farmers). ENOVA is purely a service provider for the building permit and cable lines (here: technical planning and property negotiations). At the Heerenweg Wind Farm, nine “Enercon E-40” wind turbines are to be replaced by six “Senvion M114” turbines.
