Sector News
New bearing solutions for higher power density, longer operating times, and lower carbon footprint

At any given moment during the day, 2,000 thunderstorms are active around the world. That amounts to sixteen million of such severe weather events per year. With wind turbines stretching up to a couple hundred meters above ground, very often in flat areas with no other big structures nearby, they are easy targets for lightnings. Some estimate that every blade will be struck, on average, 128 times over a period of 20 years, potentially causing important economic damage.
Wind turbine manufacturers and operators are currently faced with enormouschallenges. How can higher performance be delivered on a permanent basis withinexactly the same installation space while simultaneously extending the lifetimes ofexisting wind farms, improving the carbon footprint, and ultimately reducing electricitygeneration costs? Schaeffler provides answers to these questions at WindEnergyHamburg from September 27-30, 2022. In Hall B5, Booth 333, visitors will beable to discover the innovative solutions being offered by the company and theresulting possibilities for producing wind turbines, and operating them sustainably andeconomically.
Series-ready hydro-dynamic plain bearings for planetary gears
Increasing power density in wind turbine gears, combined with the demand for reducedweight and cost, requires new bearings concepts. With planetary gears, this leads toa larger number of planets with smaller diameters, known as ‘multi-planet concepts.’This means that not enough space is available for rolling bearings in the planet gears.Hydro-dynamic plain bearings are the solution here because of their low cross-section. At WindEnergy Hamburg, Schaeffler is introducing its new hydro-dynamic plain bearingsand related engineering for planet gears. This is because a thorough understanding ofthe systems and new simulation and calculation methods, as well as the correspondingtools, is required to ensure that the bearings function smoothly.
Adjusted rotor bearings: compact and safe operation with PREMESY
Performance optimization has brought about a marked trend towards adjusted bearingswith two tapered roller bearings in an O arrangement. The increased support spacing ofthis bearing arrangement reduces the inner bearing loads, whereby the bearing can bemade smaller and lighter. To ensure that the adjusted bearings continue to function yearon year, Schaeffler engineers fall back on various options from the tapered roller bearingconstruction kit. Selection takes place as part of a multi-level system simulation, whichtakes into account the effect of forces and deformation on the bearings in operation. Thebearing details are checked, and in a simulation, the correct pre-load – essential for theadjusted bearings – is determined. In order to ensure this, both during the installationprocess and in operation, Schaeffler offers the PREMESY pre-load measuring system.

Split asymmetric spherical roller bearings: economical operation after a changeof bearings
Worldwide, a large proportion of the drive train concepts installed on rotors are fittedwith spherical roller bearings. If these bearings fail prematurely, the high replacementcost, e.g., for cranes, usually renders it uneconomical to replace them. For such cases, Schaeffler has developed a robust and innovative solution based on split asymmetricspherical roller bearings. This solution can reduce the cost of replacing the bearings by agood 50 percent. Since the entire replacement process takes place in the nacelle, it is notnecessary to disassemble the rotor star or powertrain. All the necessary components arelifted into the nacelle using the deck crane and assembled in situ. Therefore, Schaefflerenables operators to continue to operate existing wind turbines cost-effectively.
CO2 footprint: major progress possible in the manufacture of rolling bearings
Wind energy is second only to hydroelectric power as one of the most climate-friendlyenergy production technologies. However, emissions in the upstream chain are alsoconsidered, such as in the production and processing of steel to manufacture the variouscomponents of a wind turbine. In order to significantly reduce the carbon footprint of rollerbearings, Schaeffler implements CO2 savings potentials across the entire value chain, from the procurement of the steel, through the manufacturing process, to the logisticsand packing.
Strategic partner for the energy revolution with green hydrogen
Since 2021, Schaeffler has added its own hydrogen unit to its service offer. Togetherwith the wind power sector, this works on new, integrated solutions that supportthe achievement of Schaeffler’s sustainability targets. Among other developments, anelectrolyzer for the production of green hydrogen is scheduled to start operation at the Schweinfurt plant.
Stacks, the key components of these electrolyzers, form part of the Schaeffler productportfolio. The Schaeffler K-Series Hydron PowerStack will have an application rangeof 1 to 1000 kilowatts. It will be designed and produced at Schaeffler sites in Europe, according to the highest quality standards. Electrolyzers can also be installed locally asmodular systems. This makes it possible, for example, to link them with individual windturbines.
Sector News
Two experienced figures in wind energy join forces for a strategic collaboration

Two experienced professionals in Türkiye’s wind energy sector are taking their long-standing relationship to the next level through a strategic collaboration. Alper Kalaycı, Co-Founder of EnconIQ Energy Consultancy Ltd., and Levent İshak, Co-Founder of Lewind Energy Consultancy Ltd., will collaborate to develop new projects and improve the performance of existing wind power plants.
Kalaycı and İshak, whose friendship dates back to their studies at Dokuz Eylül University’s Department of Mechanical Engineering in 1991, are carrying nearly 35 years of shared experience into this new partnership. Both have been actively involved in the wind energy sector since 1998 and aim to further leverage their accumulated expertise through this collaboration.
By combining their complementary capabilities, the two will work together on both the development of new investments and the enhancement of operational efficiency in existing wind power plants.

Türkiye’s targets provide momentum for the sector
Commenting on the collaboration, Alper Kalaycı highlighted Türkiye’s energy transition:
“In line with our country’s 2035 targets, we need to increase our current wind installed capacity by approximately three times. This clearly demonstrates the strong growth potential of our sector. In the coming period, significant opportunities are expected both in new investments and in local manufacturing. With this collaboration, we aim to make more effective use of these opportunities.”
Operation and maintenance play a critical role
Levent İshak emphasized the importance of the operational phase:
“One of the most significant cost components in wind energy projects is operation and maintenance. Structuring these processes correctly from the outset, designing contracts accordingly, properly identifying risks, and managing them effectively are of great importance. Ensuring that this structure is implemented correctly during operation is critical for long-term performance. With this collaboration, we aim to create value both in structuring long-term contracts for new projects and in improving the performance of existing power plants.”
Complementary expertise, shared vision
The collaboration brings together Alper Kalaycı’s experience in manufacturing, localization, and project development with Levent İshak’s expertise in turbine supply, maintenance, service, and operations, aiming to create a strong synergy within the sector.
Sector News
ENERCON and POLAT Enerji strengthen their long-standing partnership

ENERCON will supply wind turbine technology for another major project in Türkiye. For the “Balıkesir 1” wind farm in the northwest of the country, operator Polat Enerji has ordered 23 wind turbines of ENERCON’s new flagship model, the E-175 EP5 E2. The supply contract was signed on 27 April in Istanbul. With a total capacity of 161 MW, the wind farm is part of the YEKA 5 tender, for which Polat Enerji recently received the award from the Turkish Ministry of Energy.
“We have enjoyed a long-standing and close cooperation with Polat Enerji in the expansion of wind energy in Türkiye,” said Udo Bauer, CEO of ENERCON. “With ‘Balıkesir 1’, we will have jointly realised more than 1 gigawatt of installed capacity in Türkiye. We intend to continue this partnership for the energy transition together in the future. We are very pleased to implement the ‘Balıkesir 1’ project together using our new E-175 EP5 E2 turbine model.”
“Our journey began a quarter-century ago with an early and firm belief in Türkiye’s renewable energy potential,” said Evren Güvenç, CEO of Polat Enerji. “Today, Polat Enerji has evolved into a strategic player managing high-scale investments across Türkiye and Europe. The Balıkesir 1 project, secured through the YEKA tenders, is a testament to our continuous growth; for us, leadership is defined by more than just increasing installed capacity. We measure our progress not only by power output but by our optimisation capabilities and system flexibility. By leveraging our end-to-end expertise – from investment to operation – we are reinforcing our position as a pioneering actor shaping the transformation of the entire energy landscape.”
The E-175 EP5 E2 is ENERCON’s new top model. With a rated power of 7.0 MW and a rotor diameter of 175 metres, it is one of the most powerful onshore wind turbines in Europe in terms of energy yield. The E-175 EP5 E2 is also a central pillar of the company’s market strategy and forms the basis of the solution portfolio with which ENERCON supports its customers.
The supply agreement for the “Balıkesir 1” wind farm marks another milestone in the market launch of the E-175 EP5 E2 in Türkiye. The country is an important international strategic target market for ENERCON. To supply Turkish wind farm projects with the new E-175 EP5 E2, ENERCON will continue its proven localisation strategy with long-standing Turkish production partners and will also manufacture selected main components of the new top model in the country in the future.

“This allows us to meet the local content requirements of the Turkish tender system,” said Arif Günyar, Regional Head of the Central Asia / Middle East / Africa (CAMEA) region. “We are fully committed to the Turkish market and to the energy transition in Türkiye. We look forward to opening a new chapter of cooperation with Polat Enerji as well as with other Turkish customers and interested parties.”
Construction of the “Balıkesir 1” wind farm is scheduled to begin in September 2027, with commissioning expected by the end of December 2027. A total of 23 wind turbines will be installed on steel towers.
Sector News
Mature Capital Provided Advisory Services for the Gülle Wind Power Plant Project

Gülle Entegre Tekstil İşletmeleri, one of Türkiye’s leading integrated yarn and fabric manufacturers with 55 years of experience, has signed a wind turbine supply and service agreement with Goldwind for the Gülle Wind Power Plant (WPP) Project. The project aims to meet the energy consumption of its production facilities located in Ergene, Tekirdağ.
According to the agreement, the project, located in the Ergene district of Tekirdağ, will utilize Goldwind’s GW155-4.8MW turbine model, featuring a hub height of 110 meters, a capacity of 4.8 MW, and a rotor diameter of 155 meters. The agreement also includes a 10-year full-service package covering maintenance and availability services.
The Gülle WPP Project is planned to be commissioned in December 2026. Upon completion, the plant is expected to reach an annual electricity generation capacity of approximately 16 million kWh.
Mature Capital has provided two-phase advisory services to Gülle Entegre Tekstil from the initial concept stage of the investment. In the first phase, project development, advisory services included the preparation of economic and technical feasibility studies in line with current investment conditions, as well as strategic and procedural guidance on regulatory and permitting processes (such as EPDK, EIA, zoning, and grid connection procedures).
In the second phase, once the project reached a certain level of maturity in terms of permits, Mature Capital provided advisory services for wind turbine selection, final supplier decision-making, and the negotiation of turbine supply and service agreements.

Habib Babacan, General Manager of Mature Capital
Commenting on the agreement, Habib Babacan, General Manager of Mature Capital, stated:
“We are very pleased to see the outcome of our efforts and work materialize with this important agreement, which marks the realization of our approximately three-year collaboration with our investor, Gülle Entegre Tekstil.
We would like to thank the Goldwind Türkiye team for their cooperation and support during the contract phase, and our investor Gülle Entegre Tekstil for their trust in Mature Capital. We wish the Gülle WPP Project to be beneficial for both parties.”
About Mature Capital
Since 2022, Mature Capital has been exclusively focused on the wind energy sector, providing advisory services to investors in the areas of business development, project development, strategy formulation, and project transfer (M&A) for wind power projects.
In its fourth year of operation, the company has continued to expand its activities and has successfully completed 18 advisory projects with 15 different investor groups since its establishment.
Mature Capital will continue to provide high-quality and reliable services to wind energy investors in Türkiye.
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