Nordex (ACCIONA) optimizes the annual energy production of legacy turbines with vortex generators – ENERGIA LIMPIA XXI

CLEAN ENERGY XXI. Hamburg, November 2020. The Nordex Group has optimized the aerodynamics of the rotor blades of a total of 80 N100 / 2500 wind turbines for long-time Turkish customer Eksim. By installing the vortex generators, the power output of the previous generation turbines will increase by up to 2%.

The Nordex Group offers its customers the vortex generator upgrade as an additional option for the company’s Gamma Generation N100 turbines with blades that were not previously equipped with this solution. The devices are installed on top of the blade, each individually tailored to the type of rotor blade. The specialized publication Energía Limpia XXI highlights that according to the Nordex PRN report the result is an increase in the annual energy production of the turbines due to the optimization of the aerodynamics at the base of the rotor blades. The project comprising five wind farms in Turkey is the Nordex Group’s largest vortex generator upgrade project to date.

The Nordex Group worked closely with Eksim from the product development phase: as part of a pilot project, the rotor blades of six N100 / 2500 wind turbines at the Susurluk wind farm in Turkey were already equipped with vortex generators in 2016. This blade performance upgrade upgrade has demonstrably increased the annual energy production of this wind farm by 2 percent.

“As Eksim Investment Holding, we continually seek technical developments to increase the energy production and efficiency of our portfolio. With this project to install vortex generators on the blades of our N100 Gamma turbines, the objective was to increase energy production and it was decided to implement the project in five different wind farms up to 80 wind turbines. We are very pleased that the project has been professionally managed by the Nordex Turkey service teams and was even completed ahead of the original planned date despite potential delays due to the global Covid-19 pandemic. We would like to thank Nordex Turkey and the Nordex after-sales teams for their collaboration, professionalism and determination during the planning and execution of the project, ”says Sabahattin ER, Managing Director of Eskim Investment Holding.

Vortex generators are an established and well-researched solution for aerodynamically efficient optimization of rotor blades in order to maximize the performance and efficiency of a wind turbine. In addition to reduced power generation costs, Nordex customers benefit from high product reliability and quick on-site assembly by certified rope access technicians.

The Nordex Group continually develops upgrades for its legacy fleet using the latest technologies from the new generation of turbines. The rotor blades of the Delta and Delta4000 Generation Group turbines are equipped in series with Vortex generators.

Eskim Investment Holding – a profile
EKSIM Investment Holding has been following renewable energy technologies for a decade with the aim of converting the potential energy of water and wind in Turkey for the benefit of society. As of today, the total capacity of EKSIM’s renewable energy portfolio is 623 MW, consisting of 461 MW of wind energy and 162 MW of hydroelectric energy projects. In addition to energy production, EKSIM holds an electricity wholesale license obtained from EMRA that allows it to sell electricity to private sector companies, as well as import and export electricity.

The Nordex Group: a profile
The Group has installed more than 29 GW of wind power capacity in more than 40 markets and in 2019 generated revenues of EUR 3.3 billion. Currently, the company employs more than 7,900 workers. Joint manufacturing capacity includes factories in Germany, Spain, Brazil, India, Argentina and Mexico. The product portfolio focuses on land-based turbines in the 2.4 to 5.X MW class, which are tailor-made for the market requirements of countries with limited space and regions with limited grid capacity.

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