#solar energy #Germany #JA Solar #Dortmund #Borussia Dortmund

JA Solar Power Talk Webinar: Pioneering Solar Project at SIGNAL IDUNA PARK

On December 24, 2025, JA Solar, a globally recognized leader in green energy solutions, hosted an insightful edition of its series, "Power Talk". This episode was centered around one of Europe's most significant solar energy projects—a photovoltaic (PV) system set on the roof of SIGNAL IDUNA PARK, the renowned home ground of Borussia Dortmund. This landmark project has made heads turn not only for its innovative technology but also for its commitment to sustainability in professional sports.

The photovoltaic installation has earned certification as the world’s most powerful PV system installed on a stadium roof, demonstrating the significant potential for integrating renewable energy technology into large-scale urban infrastructure. Featuring more than 11,000 sleek black modules from JA Solar, the system is designed to generate over 4 GWh of clean energy each year. This achievement directly translates to a reduction in CO₂ emissions by approximately 1,700 tons annually. The installation exemplifies how high-performance PV solutions can be effectively employed in prominent venues while meeting stringent architectural, safety, and operational standards.

During the webinar, the speakers elaborated on the project’s development journey from its conceptual phase to its eventual operational commencement. They highlighted the critical nature of early feasibility studies, strategic long-term planning, and the importance of maintaining close collaboration with various stakeholders throughout the project. The discussion also drew attention to the substantial logistical and technical obstacles that were faced, particularly given the need to coordinate construction activities within one of Europe’s busiest stadiums, which regularly hosts a packed schedule of sporting events as well as other public gatherings. Ensuring the work aligned with strict safety protocols and navigating unpredictable weather conditions added layers of complexity to the project.

Beyond its energy production capabilities, the PV installation stands as a strong emblem of sustainability. With millions of visitors and spectators each year, SIGNAL IDUNA PARK provides an unparalleled platform to showcase the transition to renewable energy sources and illustrates how professional sports can actively support climate objectives. For JA Solar, this project represents a benchmark in delivering PV solutions within complex and high-profile environments. It underscores JA Solar's ability to ensure a dependable supply of products and powerful modules for demanding applications while paving the way for broader integration of PV systems in public infrastructure across Europe and beyond.

The webinar offered valuable insights from key industry participants: Petra Zelenická, the Marketing and Market Research Manager for Europe at JA Solar; Florian Demnitz, an Energy Manager for Borussia Dortmund; and Christoph Kielhorn, Project Manager for Battery Development at RWE. The session was moderated by Gianluca Michieletto, the Marketing & Social Media Manager at JA Solar.

About JA Solar

Founded in 2005, JA Solar is a leading provider of photovoltaic power generation solutions with a vertically integrated business model encompassing wafers, cells, modules, and energy storage. The company operates 16 subsidiaries globally, serving customers in 180 countries and regions. As of the third quarter of 2025, JA Solar's cumulative shipments of cells and modules total nearly 317 GW, backed by over 2,000 patents and a robust global distribution network.

For further details or to view the recorded webinar, you can visit JA Solar's YouTube channel.