https://www.urban-transport-magazine.co ... in-munich/ (worth looking at the whole article and pictures)
Experimental, but worth trying out. Whether it's worthwhile depends on how much time the bus is not in shaded locations, of course.A bus train operated by the Munich Transport Company (MVG) will in future be on regular service with solar cells on the roof. MVG officially presented the vehicle on Thursday, March 31, 2022 together with the start-up Sono Motors, which developed the photovoltaic system, and Katrin Habenschaden, Deputy Mayor of the City of Munich. MVG wants to use the solar system to investigate which auxiliary systems on board can be reliably supplied with solar energy.
The solar system that MVG ordered from the Munich company Sono Motors covers an area of around 12 square meters. The available space on the roof of the trailer corresponds to that of a standard 12-metre bus – the test results can be transferred to the use of electric normal buses. The experimental setup is funded by the City of Munich as part of the “Integrated Action Program to Promote Electromobility in Munich”.
Katrin Habenschaden, Deputy Mayor of the City of Munich: “We need a change of course in the transport sector. The traffic still falls far short of the climate protection goals, and this also has a direct impact on the air quality in the city of Munich. The solar buses can be a building block in this urgently needed change towards climate-friendly mobility. The idea convinces me, because a lot of fuel can be saved here and CO2 emissions can be significantly reduced.”