3U HOLDING AG: Langendorf repowering project successfully completed – capacity almost doubled and power production poised for significant growth

3U HOLDING AG: Langendorf repowering project successfully completed – capacity almost doubled and power production poised for significant growth

• All five new wind turbines connected to the grid: wind farm’s installed capacity increases from 22.5 MW to 43 MW
• Annual yield of green electricity expected to exceed 100 million kWh
• Carbon emissions savings of more than 50,000 tons a year
• Investment volume of approximately EUR 70 million

Marburg, 2 March 2026 – 3U HOLDING AG (ISIN DE0005167902) announces the successful completion of its largest repowering project to date in the Langendorf Wind Farm (Saxony-Anhalt). Following a construction period of almost 16 months, all five newly erected wind turbines, each with a nominal output 6.2 MW, are now fully operational and feeding environmentally compatible electricity into the public grid. The Group’s challenging modernisation undertaking has therefore been realised as scheduled.

Enhancing technological efficiency and raising profitability
As part of the repowering concept, a total of seven of the 15 existing aging wind turbines have been replaced by five new Vesta V162 wind turbines. The new facilities are characterised by a high level of efficiency and optimized operating parameters. Despite the low number of turbines, the location’s nominal output has now been virtually doubled through technological progress, from previously 22.5 MW to currently 43 MW.

Based on a conservative assumption of 2,500 full load hours per year, the Langendorf site will in future be producing more than 100 million kilowatt hours (kWh) of climate-compatible electricity a year. Electricity volumes have therefore way more than doubled compared to the former wind farm concept. This amount of energy has been calculated as sufficient to supply more than 30,000 households.

Contribution to climate protection
Repowering has massively improved the location’s ecological footprint: By replacing fossil fuels in Germany’s power mix, the upgraded Langendorf Wind Farm can now avoid emitting more than 50,000 tons of carbon emissions a year, thereby making a significant contribution to the regional and national energy transition.

“Completing the Langendorf repowering project represents a milestone in achieving our growth and profitability targets,” states Christoph Hellrung, 3U HOLDING AG’s CFO and member of the Management Board team responsible for the Renewable Energies segment. “With an investment volume of around EUR 70 million, we have created a highly profitable basis for our Renewable Energies segment. The efficiency of the new turbines with a hub height of 169 metres and a rotor diameter of 162 metres serves to secure stable, planable cash flows for us while sustainably strengthening the entire 3U Group’s profitability. We have once more delivered proof of our competence in implementing infrastructure projects, with a view to creating value for our shareholders.”

In the years ahead and taking account of the site-dependent high-grade quality, the project will benefit from a guaranteed feed-in tariff of around EUR 0.09 per kilowatt hour. Combined with the power purchase agreements already negotiated, this paves the way for a significant improvement in the Renewable Energies segment’s revenue and profit trend.

Repowering, meaning replacing old turbines by new more powerful ones, is an integral part of successfully expanding Germany’s wind energy. Measures such as these considerably boost energy yields on areas already impacted and accepted. The additional electricity volumes and considerable savings on carbon emissions underscore the significance of this project for the environment, the region and our shareholders.

The Langendorf Wind Farm was taken into operation in 2001 with a total of 15 Enron/GE 1.5sl wind turbines, each producing a nominal output of 1.5 MW. 3U acquired the wind farm in 2014. Upon completing the repowering project, the Group’s wind farm and solar park portfolio increased from 53 MW to 73 MW in terms of installed capacity, enabling 3U HOLDING AG to consolidate its position as a reliable player on the renewable energies market.

Contact:

Thomas Fritsche, Investor Relations

Tel.: +49 (0)6421 999 – 1200

email: IR@UUU.de

About 3U:

3U HOLDING AG based in Marburg, Germany, was founded in 1997. As the operating management and investment holding company, it heads up the 3U Group. With a view to increasing the value for the shareholders, employees, customers, suppliers and all stakeholders, the company acquires, operates and sells companies in the three segments of ITC (Information and Telecommunications Technology), Renewable Energies and HVAC (Heating, Ventilation and Air Conditioning Technology. The 3U Group operates successfully and profitably with its business models in mega trends in all three segments and is striving to attain market leadership in particular with its e-commerce business model. 3U HOLDING AG shares are traded on XETRA, Tradegate and on German regional stock exchanges (ISIN: DE0005167902; identifier: UUU). More information can be found at www.UUU.de.