LONGi Solar Supplies Global Rail Producer Stadler with Modules for 14,000 m² Rooftop Installation


•   Rooftop PV plant to be one of the largest in Berlin
•   Power generation equals ca. 800 single-family homes
•   ca. 80% used for on-site power, 20% fed into local grid


Swiss rail manufacturer Stadler’s German subsidiary is building a rooftop photovoltaic installation on its Berlin production facility. Using just over 7,200 modules from LONGi Solar, the largest module manufacturer worldwide, the array will cover 14,000 square meters on Stadler Deutschland’s assembly plant. Electrical and building engineering firm Sandmeyer GmbH, which is installing the project, expects it to be completed by the end of 2023. Stadler Rail AG is a leading global producer of rail vehicles.

Stadler rooftop PV will cover the majority of the Berlin facility’s electricity needs


The modules will generate 3,000 MWh of electricity per year, enough to supply ca. 800 average single-family homes with their annual electricity consumption, making the installation one of Berlin’s largest solar power plants. The Stadler Deutschland facility expects to consume 80% of the electricity itself while feeding the remaining 20% into the local grid.

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Christian Keasler, Sales Manager DACH at LONGi Solar said: “We are very proud to support a solar installation of such a significant size in Berlin jointly with the long-time photovoltaic specialists Sandmeyer GmbH and Limes GmbH. The solar expansion in Berlin still has a lot of untapped potential, especially when it comes to harnessing the vast roofs of industrial and production plants.”

Sandmeyer GmbH’s managing directors, Timm Sandmeyer and Malte Sandmeyer, added: “For large commercial or industrial projects like Stadler Deutschland’s Berlin rooftop, we believe it’s essential for the installation to deliver the most reliable possible power. This facility must be able to depend on its electricity generation, so we work with premium products from LONGi Solar.

Installation is LONGi’s latest addition to its Berlin/Brandenburg commitments

Since 2017, LONGi has been active in Berlin/Brandenburg with its market entry in Europe and has since accomplished numerous projects jointly with its electrical installation partners. It recently introduced its latest module technology, the Hi-MO 6 series, to the German market which is based on a new generation HPBC (Hybrid Passivated Back Contact) cell technology opening a new chapter in the mass production of high-efficiency cells.

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