The new photovoltaic system on the roof of Borussia Dortmund’s SIGNAL IDUNA PARK has been completed. With an output of more than 5 megawatts (MWp), the club is now proud to have the world’s most powerful PV system ever installed on a stadium roof.
With 11,132 modules and an output of more than 5 megawatts (MWp), Germany’s largest stadium now boasts the world’s most powerful PV installation on a stadium roof. In the future, BVB will cover up to half of the stadium’s electricity needs using solar energy. The world record has been officially confirmed by the German Record Institute. Compared to the previous power supply, the system saves approximately 1,700 tonnes of CO₂ per year.
By the beginning of 2026, a battery storage facility with a capacity of 3.7 megawatt hours will also have been built. Once it has been connected to the new PV system, climate-friendly electricity can also be used when the sun is not shining.
PV System and Battery at SIGNAL IDUNA PARK
– Installed PV capacity: 5.009 MWp (previous system: 0.924 MWp)
– Most powerful stadium-roof PV system worldwide
– 11,132 JA Solar Fullblack modules (450 Wp/module)
– 11 Sungrow inverters
– Self-consumption rate approx. 45%
– Completion of the battery storage system (stationary battery): Q1/2026
– Installed storage output: 3.7 MW
– Approx. 4.1 GWh/year savings
Back in April 2024, BVB and RWE installed a PV system with around 200 solar modules on the roof of the BVB FanWelt next to the stadium. As “Premium & Sustainability Partner,” RWE supports BVB in its ambitious decarbonization plans.
The Johan Cruijff ArenA in Amsterdam is also relying on a battery storage solution at the stadium. Entire matchdays can already be powered exclusively by green energy. stadiaworld visited the venue to see how the system works and how those in charge are already planning the next steps.
Hans-Joachim Watzke, Chairman of the Management Board BVB: “SIGNAL IDUNA PARK symbolizes our integrated efforts to ensure Borussia Dortmund’s future viability. We are delighted that our iconic home can now be associated with a record-breaking flagship project for climate protection.” (stadiaworld, 24.11.2025)
Continue reading with 
Your benefits with stadiaworld+
Register now
Do you already have a Stadionwelt+ or stadiaworld+ subscription? Log in here
