Wind Farm Tewel Ilhorn Söhlingen:
Individual solutions for old turbines

Deutsche Windtechnik adapts flexibly to partial wind farms

As some of its wind turbines have already been operating since 2002 and are soon to be replaced by more powerful models, the operator of the Tewel Ilhorn Söhlingen (TIS) wind farm in Lower Saxony has opted for a basic contract with Deutsche Windtechnik. With this low-cost maintenance concept, the service provider focuses on 24/7 remote monitoring, including fault diagnosis as well as technical support and maintenance work.

The 28-megawatt TIS wind farm consists of three partial farms with AN Bonus turbines from Siemens. The operator, European Energy A/S from Denmark, is planning to carry out extensive repowering measures on one of the partial farms over the next two years. “We opted for a basic contract with Deutsche Windtechnik because we wanted to keep early repowering options open,” explains Johannes von Dechend, Senior Project Manager at European Energy. “It provides us with competent basic care with no unnecessary costs.”

Focusing on the essentials

The operating company has focused on development, financing and construction of wind and solar farms since 2004 and has been working together with Deutsche Windtechnik on this project since the beginning of 2014. To optimise turbine service life and operating costs and increase availability, the Danish company works in close coordination with the experts at Deutsche Windtechnik for all repair and maintenance work to the machine and the rotor.

“We particularly appreciate the good reachability and flexibility of Deutsche Windtechnik. The mechanics adapt to the individual requirements of each wind farm,” explains Johannes von Dechend. Rather than, for example, providing “cosmetic repairs” to the rotor blades for the soon-to-be-repowered partial farm, Deutsche Windtechnik focuses on repairing serious damages.

Johannes von Dechend, Senior Project Manager for the operating company European Energy A/S.

Time up: the operator of the Tewel Ilhorn Söhlingen wind farm plans soon to replace several existing turbines with more powerful models. Photo credit: Energiequelle.

Tewel Ilhorn Söhlingen wind farm at a glance
Location: Tewel Ilhorn Söhlingen (Lower Saxony)
Operator: European Energy A/S
Start of cooperation: 2014
Deutsche Windtechnik services:

24/7 remote monitoring, technical advice, maintenance work

Technical details
Turbine types:

14x Siemens AN Bonus (2 MW output each)

Total output:  28 MW
Expectes anual yield: 30 million kWh