In a pilot project, the first solar cycle path roofing was put into operation in the German city of Freiburg. In densely populated areas, this project demonstrates the coexistence of traffic surfaces and solar energy generation with extremely durable glass-glass PV modules
Innovative solution: Solar power generation in urban areas
Case Study from | Stäubli Electrical Connectors, Inc.
In a pilot project, the first solar cycle path roofing was put into operation in the southern German city of Freiburg. In densely populated areas, this project demonstrates the coexistence of traffic surfaces and solar energy generation with extremely durable glass-glass PV modules from the German company Solarwatt and reliable MC4 PV DC connectors from the Swiss manufacturer Stäubli.
Germany's first solar cycle path roofing was put into operation in Freiburg i.Br. in spring 2023. The joint pilot project of the City of Freiburg, the Fraunhofer Institute for Solar Energy Systems ISE, and the badenova subsidiary badenovaWÄRMEPlus offers cyclists 300 m of protection from wind and weather along the trade fair grounds. At the same time, the 280 MWh of solar power generated - which corresponds to an annual electricity demand of more than 180 people - is used to supply energy to the laboratories and premises of the locally-based ISE.
Durable solar system components
The cycle path’s solar roof is equipped with 900 translucent glass-glass solar modules from the German photovoltaic pioneer Solarwatt. The "Solarwatt Panel vision construct" modules have general building approval from the German Institute for Building Technology and are considered a regulated building product. As such, they are perfect for overhead and facade installations and have translucent embedding of the solar cells. Power transmission is ensured by Stäubli's high-performance and robust MC4 PV DC connectors.
Leading photovoltaic experts
The module manufacturer Solarwatt, has also been active in photovoltaics since its beginnings just like Stäubli. With its 30 years of experience, the Dresden-based company has become a system developer and sector coupler on the German market. Solarwatt's product and service enable homeowners and businesses to reduce their energy costs and CO2 emissions by up to 80 %. Solarwatt is the European market leader with its exceptionally durable glass-glass modules.
The PV DC connectors in Stäubli's Original MC4 product portfolio are world market leaders, connecting more than 50 % of global PV capacity. Their unique contact technology is characterized by extremely low contact resistance and thus low power loss. This ensures efficient operation as well as safe returns and the risk of downtime is minimized.
Creative solutions for a sustainable future
In order to promote independence from fossil energy sources, PV systems on building roofs and facades are not the only way to help in urban areas; sealed surfaces such as parking lots, paths, and roads can also be incorporated into solar energy projects. It is important especially in cities to find creative solutions for the integration of photovoltaics to generate clean energy.
PV roofing on cycle path in Freiburg, Germany © badenova
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