Flatbet trailer extensions

Munich tests Sono Motors solar trailer hitched to a diesel bus

The local transport company in Munich (the MVG, short for Münchner Verkehrsgesellschaft) has just started testing a solar trailer that can be hitched to its existing buses, promising to significantly reduce their carbon footprint each year. The trailer is covered with solar panels provided by Sono Motors, and it helps save fuel by providing power for heating, ventilation and air conditioning, as well as the trailer’s steering system.

MVG says the trailer could potentially help save up to 2,500 liters of diesel per year per vehicle and also reduce CO2 emissions per vehicle by over 6.5 tonnes. This is achieved through the use of 20 semi-flexible photovoltaic panels from Sono Motors (the same technology it uses in its first production model, the Sion).

According to Laurin Hahn, co-founder and CEO of Sono Motors,

The partnership with MVG illustrates the enormous potential of our unique solar technology, which is now being used for the first time in the company’s history in public transport. This is an important step in Sono Motors’ mission to make every vehicle solar.

Especially in times of rising energy prices and increasing emission regulations in urban areas, our solar technology offers great added value to public transport operators. City buses and coaches, whether electric or diesel, offer plenty of space and run every day. The first solar bus trailer for MVG will hit the streets of Munich in the future and allow MVG passengers to experience solar mobility in everyday life.

And even if the solar trailer is tested behind a diesel bus, Sono Motors claims that its special photovoltaic panels could be integrated into an electric bus and provide it with a noticeable range extension. Currently, there are no electric buses with solar panels from Sono, but the company has signed agreements with bus and truck manufacturer MAN, so that we can see vehicles from this brand equipped with the technology at the future.


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